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A field experiment was conducted to investigate the effectiveness of different herbicides for controlling wild onion (Asphodelus tenuifolius) in cumin (Cuminum cyminum L.) during the rabi seasons (2018–2019 and 2019–2020) at Agricultural Research Station, Agriculture University, Jodhpur, Rajasthan. The experiment comprised eight herbicidal weed management treatments for wild onion applied to cumin in a three-replication randomized block design. Among the herbicidal weed management treatments, early post-emergence (8 DAS) application of oxyfluorfen 200 g/ha resulted in the lowest weed density and dry matter of Asphodilus tenuifolius, with maximum weed (Asphodilus tenuifolius) control efficiency at 40 days after sowing (DAS) during both experimental years. Likewise, the highest total efficiency of weed control was recorded with the application of oxyfluorfen 200 g/ha at 8 DAS. Oxyflourfen 200 g/ha used early post emergence (8 DAS) reduced the weed index more effectively than the other herbicides. It also recorded the highest number of branches/plant, plant height, umbels/plant, umbellates/umbel, seeds/umbellates, and seed yield. However, application of oxyflourfen @ 200 g/ha 8 DAS–early POE and pendimethalin 38.7 CS 500 g/ha + oxyfluorfen @ 150 g/ha 8 DAS–early POE were statistically similar in terms of plant growth, yield, and yield attributes. The net returns (366.49 USD/ha in 2018–2019 and 175.72 USD/ha in 2019–2020) and B:C ratio (1.70 and 1.33 in 2018–2019 and 2019–2020, respectively) were also superior, with oxyfluorfen 200 g/ha applied early post emergence.
Moti Lal Mehriya; Neelam Geat; Sita Ram Kumhar; Abdullah A. Alrajhi; Mohammed A. Alkuriji; Ahmed Z. Dewidar; Mohamed A. Mattar. Efficacy of Herbicides in Controlling Wild Onion (Asphodelus tenuifolius L.) in Cumin Grown under Arid Climatic Conditions. Agronomy 2021, 11, 1597 .
AMA StyleMoti Lal Mehriya, Neelam Geat, Sita Ram Kumhar, Abdullah A. Alrajhi, Mohammed A. Alkuriji, Ahmed Z. Dewidar, Mohamed A. Mattar. Efficacy of Herbicides in Controlling Wild Onion (Asphodelus tenuifolius L.) in Cumin Grown under Arid Climatic Conditions. Agronomy. 2021; 11 (8):1597.
Chicago/Turabian StyleMoti Lal Mehriya; Neelam Geat; Sita Ram Kumhar; Abdullah A. Alrajhi; Mohammed A. Alkuriji; Ahmed Z. Dewidar; Mohamed A. Mattar. 2021. "Efficacy of Herbicides in Controlling Wild Onion (Asphodelus tenuifolius L.) in Cumin Grown under Arid Climatic Conditions." Agronomy 11, no. 8: 1597.
Monsoon fluctuation due to El Niño Southern Oscillation (ENSO) has a reflective influence on rice production, which is the major food grain crop in India. The impact of ENSO on the spatial variability of summer monsoon rainfall was analyzed from 1950 to 2018 and that on Kharif rice production for the period of 1998–2016. It was clear from the analysis that ENSO had varied influences on rainfall and rice production over different rice-growing districts of Karnataka. During El Niño (strong, moderate, and weak) years, southwest (S-W) monsoon rainfall was below normal in all the districts of Karnataka, wherein the highest negative deviation from normal was recorded in the Mysore district (−21.43%). In contrast, the rice production was higher in 15 districts out of 25, and the deviation from normal ranged from −39.73% in Bidar to 42.11% in Gulbarga district. During the La Niña (strong, moderate, and weak) years, S-W monsoon rainfall was above normal in 12 districts in which Bidar and Bengaluru urban districts have shown the highest positive deviation (19.93 and 19.82%, respectively). However, except for Udupi, Dakshina Kannada, Bidar, Davanagere, and Hassan districts, all the other major rice-growing districts have shown a positive deviation in rice production with the highest deviation of 62.39% in Tumkur district. Additionally, correlation coefficient values indicated the influence of southwest monsoon rainfall on Kharif rice production during El Niño years with a major contribution from September month rainfall. This kind of ENSO impact analysis on spatial rice production could be useful for formulating the farm-level site-specific management, planning, and policy decisions during ENSO periods in advance.
Shilpa Cherian; Shankarappa Sridhara; Konapura Manoj; Pradeep Gopakkali; Nandini Ramesh; Abdullah Alrajhi; Ahmed Dewidar; Mohamed Mattar. Impact of El Niño Southern Oscillation on Rainfall and Rice Production: A Micro-Level Analysis. Agronomy 2021, 11, 1021 .
AMA StyleShilpa Cherian, Shankarappa Sridhara, Konapura Manoj, Pradeep Gopakkali, Nandini Ramesh, Abdullah Alrajhi, Ahmed Dewidar, Mohamed Mattar. Impact of El Niño Southern Oscillation on Rainfall and Rice Production: A Micro-Level Analysis. Agronomy. 2021; 11 (6):1021.
Chicago/Turabian StyleShilpa Cherian; Shankarappa Sridhara; Konapura Manoj; Pradeep Gopakkali; Nandini Ramesh; Abdullah Alrajhi; Ahmed Dewidar; Mohamed Mattar. 2021. "Impact of El Niño Southern Oscillation on Rainfall and Rice Production: A Micro-Level Analysis." Agronomy 11, no. 6: 1021.
A field experiment was conducted on date palm trees (Phoenix dactylifera ‘Succary’) cultivated on sandy loam soil from 2017 to 2018. This study investigated the effects of providing water of three different qualities, namely freshwater (FR) and two saline water sources: reclaimed wastewater (RW) and well-water (WE) applied through three irrigation levels representing 50% (I50), 100% (I100), and 150% (I150) of crop evapotranspiration (ETc), on the soil water and salt distribution patterns, yield, water productivity (WP), and fruit quality of the ′Succary′ date palm. The electrical conductivity (ECw) of FR, RW, and WE were 0.18, 2.06, and 3.94 dS m−1, respectively. Results showed that WE applied by the I150 treatment had the highest soil water content, followed by RW used in the I100 irrigation level and FR with I50, whereas the soil salt content was high for WE applied in the I50 level and low for FR applied by the I150 treatment. Deficit irrigation (I50) of date palms with either RW or WE reduced date yields on average 86 kg per tree, whereas the yield increased under over-irrigation (I150) with FR to 123.25 kg per tree. High WP values were observed in the I50 treatments with FR, RW, or WE (on average 1.82, 1.68, and 1.67 kg m−3, respectively), whereas the I150 treatment with each of the three water types showed the lowest WP values. Fruit weight and size were the lowest in the full irrigation (I100) with WE, whereas the I150 treatment with RW showed the highest values. There were no significant differences in either total soluble solids (TSS) or acidity values when the irrigation level decreased from 100% to 50% ETc. Compared with both I50 and I100 treatments, reduced values of both TSS and acidity were observed in the I150 treatment when ECw decreased from 3.94 to 0.18 dS m−1,. Fruit moisture content decreased with the application of saline irrigation water (i.e., RW or WE). Total sugar and non-reducing sugar contents in fruits were found to be decreased in the combination of RW and I150, whereas the 50% ETc irrigation level caused an increment in both parameters. These results suggest that the application of deficit irrigation to date palm trees grown in arid regions, either with FR or without it, can sufficiently maximize WP and improve the quality of fruits but negatively affects yield, especially when saline water is applied. The use of saline water for irrigation may negatively affect plants because of salt accumulation in the soil in the long run.
Mohamed Mattar; Said Soliman; Rashid Al-Obeed. Effects of Various Quantities of Three Irrigation Water Types on Yield and Fruit Quality of ‘Succary’ Date Palm. Agronomy 2021, 11, 796 .
AMA StyleMohamed Mattar, Said Soliman, Rashid Al-Obeed. Effects of Various Quantities of Three Irrigation Water Types on Yield and Fruit Quality of ‘Succary’ Date Palm. Agronomy. 2021; 11 (4):796.
Chicago/Turabian StyleMohamed Mattar; Said Soliman; Rashid Al-Obeed. 2021. "Effects of Various Quantities of Three Irrigation Water Types on Yield and Fruit Quality of ‘Succary’ Date Palm." Agronomy 11, no. 4: 796.
Halophytic plants can adapt to grow and thrive in highly saline conditions. Suaeda species are annual halophytes with high salt tolerance and are most suitable in the restoration of salinized or contaminated saline land and as food, forage, medicine, and bioenergy. In this study, we comprehensively analyzed the different metabolic responses of Suaeda species under salt and drought stress at ambient and elevated CO2 conditions. Seedlings of Suaeda species were treated with 500 mM NaCl and 5% of polyethylene glycol under elevated CO2 stress conditions for 24 h. Then, widely untargeted metabolites were detected by gas chromatography–mass spectrometry. Different metabolites involved in amino acid metabolism, glycolysis, photorespiration, and tricarboxylic acid cycle were quantitatively determined after stress treatments. A total of 61 primary metabolites were annotated. Different treatments increased the contents of certain metabolites, such as amino acids, sugars, and organic acids, as well as some antioxidants, such as quininic acid, kaempferol, and melatonin. These substances may be correlated with osmotic tolerance, increased antioxidant activity, and medical and nutritional value in the species. This study suggests that various metabolites differentially accumulated in C4Suaeda species under varying stress conditions. Furthermore, this work provides new insights into the key secondary metabolite pathway involved in stress tolerance.
Sonam Yadav; Hosam O. Elansary; Mohamed A. Mattar; Khalid M. Elhindi; Majed A. Alotaibi; Avinash Mishra. Differential Accumulation of Metabolites in Suaeda Species Provides New Insights into Abiotic Stress Tolerance in C4-Halophytic Species in Elevated CO2 Conditions. Agronomy 2021, 11, 131 .
AMA StyleSonam Yadav, Hosam O. Elansary, Mohamed A. Mattar, Khalid M. Elhindi, Majed A. Alotaibi, Avinash Mishra. Differential Accumulation of Metabolites in Suaeda Species Provides New Insights into Abiotic Stress Tolerance in C4-Halophytic Species in Elevated CO2 Conditions. Agronomy. 2021; 11 (1):131.
Chicago/Turabian StyleSonam Yadav; Hosam O. Elansary; Mohamed A. Mattar; Khalid M. Elhindi; Majed A. Alotaibi; Avinash Mishra. 2021. "Differential Accumulation of Metabolites in Suaeda Species Provides New Insights into Abiotic Stress Tolerance in C4-Halophytic Species in Elevated CO2 Conditions." Agronomy 11, no. 1: 131.
Increased water demands and climate change have reduced agricultural water resources in areas that experience water shortages. Therefore, a field experiment was conducted in an arid region of Saudi Arabia to evaluate the effects of two drip irrigation systems [surface (DI) and subsurface (SDI)] and three irrigation levels [100%, 70%, and 50% of crop evapotranspiration (I100, I70, and I50, respectively)] on the growth traits, tuber yield, and irrigation water use efficiency (IWUE) of potato (Solanum tuberosum L.) during the 2017 and 2018 growing seasons. θv was 13.74 and 23.85% lower under the DI system and 11.90 and 24.14% lower under the SDI system with the I70 and I50 treatments, respectively, than with the I100 treatment, and was also lower under the DI system than under the SDI system. The fresh and dry vegetative parts of the plants were heavier with the I100 treatment under the SDI system than with the I70 and I50 treatments under the DI system, and the leaf area indexes were also significantly lower with I70 and I50 than with I100 but were not affected by the irrigation system. The fresh and dry tuber yields were lowest with the I50 treatment (23.97 and 3.93 Mg ha−1, respectively), followed by I70 (28.61 and 4.98 Mg ha−1, respectively), and I100 (34.43 and 6.67 Mg ha−1, respectively) and were higher under the SDI system than under the DI system. By contrast, IWUE was highest with the I50 treatment (6.49 and 7.02 kg m−3) and lowest with the I100 treatment (5.62 and 5.85 kg m−3) under the DI and SDI systems, respectively. These findings indicate that full irrigation (I100) with the SDI system maximizes potato yield but decreases IWUE, whereas integration of the SDI system with deficit irrigation is effective in improving water productivity due to less water being consumed, allowing these practices to be used under scarce water conditions.
Mohamed A. Mattar; Tarek K. Zin El-Abedin; Hussein M. Al-Ghobari; A. A. Alazba; Hosam O. Elansary. Effects of different surface and subsurface drip irrigation levels on growth traits, tuber yield, and irrigation water use efficiency of potato crop. Irrigation Science 2021, 39, 517 -533.
AMA StyleMohamed A. Mattar, Tarek K. Zin El-Abedin, Hussein M. Al-Ghobari, A. A. Alazba, Hosam O. Elansary. Effects of different surface and subsurface drip irrigation levels on growth traits, tuber yield, and irrigation water use efficiency of potato crop. Irrigation Science. 2021; 39 (4):517-533.
Chicago/Turabian StyleMohamed A. Mattar; Tarek K. Zin El-Abedin; Hussein M. Al-Ghobari; A. A. Alazba; Hosam O. Elansary. 2021. "Effects of different surface and subsurface drip irrigation levels on growth traits, tuber yield, and irrigation water use efficiency of potato crop." Irrigation Science 39, no. 4: 517-533.
A three-year field experiment was conducted at the Agricultural Research Station of Mandor, Jodhpur, Rajasthan, under arid climatic conditions in the rabi season of 2016–2019 with the objectives of evaluating the effect of drip irrigation and fertigation levels on cumin plant growth, yield, oil content, water-use efficiency, and water productivity. The pooled data revealed that the drip irrigation at 0.6 cumulative pan evaporation (CPE) recorded significantly higher plant height (31.4 cm), umbels plant−1 (50.4), umbellates umbel−1 (5.07), seeds umbel−1 (5.34), test weight (4.60 g), seed yield (1063 kg ha−1), gross return (₹ 172,600 ha−1), net return (₹ 113,500 ha−1) and benefit, and cost ratio (2.9) over drip fertigation at 0.4 CPE and surface irrigation with 0.8 CPE. The fertigation with 80% recommended dose of fertilizer (RDF) being at par with 100% RDF recorded a significantly higher number of umbels plant−1 (50.0), umbellates umbel−1 (5.03), seeds umbellate−1 (5.24), test weight (4.67 g), seed yield (1052 kg ha−1), gross return (₹ 170,900 ha−1), net return (₹ 111,700 ha−1), and benefit cost ratio (2.9) over fertigation with 60% RDF and control. Maximum water-use efficiency (5.7 kg ha−1 mm−1) and water saving (39.04%) was observed under drip irrigation at 0.4 CPE followed by 0.6 CPE (4.8 kg ha−1 mm−1 and 18.86%, respectively).
Moti Lal Mehriya; Neelam Geat; Sarita; Hari Singh; Mohamed A. Mattar; Hosam O. Elansary. Response of Drip Irrigation and Fertigation on Cumin Yield, Quality, and Water-Use Efficiency Grown under Arid Climatic Conditions. Agronomy 2020, 10, 1711 .
AMA StyleMoti Lal Mehriya, Neelam Geat, Sarita, Hari Singh, Mohamed A. Mattar, Hosam O. Elansary. Response of Drip Irrigation and Fertigation on Cumin Yield, Quality, and Water-Use Efficiency Grown under Arid Climatic Conditions. Agronomy. 2020; 10 (11):1711.
Chicago/Turabian StyleMoti Lal Mehriya; Neelam Geat; Sarita; Hari Singh; Mohamed A. Mattar; Hosam O. Elansary. 2020. "Response of Drip Irrigation and Fertigation on Cumin Yield, Quality, and Water-Use Efficiency Grown under Arid Climatic Conditions." Agronomy 10, no. 11: 1711.
Understanding of the potassium (K) nutrient cycle and its microbial transformation of unavailable forms of soil K to plant-available K is crucial in any agroecosystem for strategic nutrient management through inorganic fertilizer, crop residue (CR), and microbial applications. Therefore, the present investigation was undertaken to study the effect of crop residue and K management practices on crop productivity, K mobilization from native soil K-pool, and crop assimilation of K under a zero-till maize–wheat cropping system. The experiment consisted of four residue levels (0, 2, 4, and 6 Mg ha−1) and five K levels (0, 50%, 100%, 150% RDK [recommended dose of K] and 50% RDK + potassium solubilizing bacteria, KSB). Results showed that CR retention at 6.0 Mg ha−1 significantly improved grain yield (of maize by 10.17%; wheat by 9.87%), dry matter accumulation, K uptake and redistribution in native soil K pools (water soluble K (WSK), exchangeable K (EK) and non-exchangeable K (NEK)) at 30 and 60 days after sowing and at harvest as compared to no CR. Among the K management, 50% RDK+KSB reported significantly higher grain yield (of maize by 26.22%; wheat by 24.70%), dry matter accumulation, K uptake, and native K pools (WSK, EK, and NEK) at different growth stages compared to no K. Total K did not differ significantly due to residue and K management. The highest actual change of K reported with 6.0 Mg ha−1 CR (51 kg ha−1) and 50% RDK+KSB (59 kg ha−1) over control. Significant (p ≤ 0.01) positive correlation was found among grain yield, dry matter accumulation, K uptake, the actual change in K and different native K pools. It can be concluded that retention of 6 Mg ha−1 CR and supply of 50% K through inorganic fertilizer along with seed inoculation of KSB biofertilizers, improved crop growth, productivity by enhancing K assimilation as a consequence of the release of non-exchangeable K and through the application of CR and K treatments under a zero tillage maize–wheat system.
Raghavendra Madar; Yudh Singh; Mahesh Meena; Tapas Das; Venkatesh Paramesh; Fahed Al-Mana; Mohamed A. Mattar; Hosam O. Elansary. Residue and Potassium Management Strategies to Improve Crop Productivity, Potassium Mobilization, and Assimilation under Zero-Till Maize–Wheat Cropping System. Agriculture 2020, 10, 401 .
AMA StyleRaghavendra Madar, Yudh Singh, Mahesh Meena, Tapas Das, Venkatesh Paramesh, Fahed Al-Mana, Mohamed A. Mattar, Hosam O. Elansary. Residue and Potassium Management Strategies to Improve Crop Productivity, Potassium Mobilization, and Assimilation under Zero-Till Maize–Wheat Cropping System. Agriculture. 2020; 10 (9):401.
Chicago/Turabian StyleRaghavendra Madar; Yudh Singh; Mahesh Meena; Tapas Das; Venkatesh Paramesh; Fahed Al-Mana; Mohamed A. Mattar; Hosam O. Elansary. 2020. "Residue and Potassium Management Strategies to Improve Crop Productivity, Potassium Mobilization, and Assimilation under Zero-Till Maize–Wheat Cropping System." Agriculture 10, no. 9: 401.
Artemisia absinthium—wormwood (Asteraceae)—is a very important species in the history of medicine, formerly described in medieval Europe as “the most important master against all exhaustions”. It is a species known as a medicinal plant in Europe and also in West Asia and North America. The raw material obtained from this species is Absinthii herba and Artemisiae absinthii aetheroleum. The main substances responsible for the biological activity of the herb are: the essential oil, bitter sesquiterpenoid lactones, flavonoids, other bitterness-imparting compounds, azulenes, phenolic acids, tannins and lignans. In the official European medicine, the species is used in both allopathy and homeopathy. In the traditional Asian and European medicine, it has been used as an effective agent in gastrointestinal ailments and also in the treatment of helminthiasis, anaemia, insomnia, bladder diseases, difficult-to-heal wounds, and fever. Today, numerous other directions of biological activity of the components of this species have been demonstrated and confirmed by scientific research, such as antiprotozoal, antibacterial, antifungal, anti-ulcer, hepatoprotective, anti-inflammatory, immunomodulatory, cytotoxic, analgesic, neuroprotective, anti-depressant, procognitive, neurotrophic, and cell membrane stabilizing and antioxidant activities. A. absinthium is also making a successful career as a cosmetic plant. In addition, the importance of this species as a spice plant and valuable additive in the alcohol industry (famous absinthe and vermouth-type wines) has not decreased. The species has also become an object of biotechnological research.
Agnieszka Szopa; Joanna Pajor; Paweł Klin; Agnieszka Rzepiela; Hosam O. Elansary; Fahed A. Al-Mana; Mohamed A. Mattar; Halina Ekiert. Artemisia absinthium L.—Importance in the History of Medicine, the Latest Advances in Phytochemistry and Therapeutical, Cosmetological and Culinary Uses. Plants 2020, 9, 1063 .
AMA StyleAgnieszka Szopa, Joanna Pajor, Paweł Klin, Agnieszka Rzepiela, Hosam O. Elansary, Fahed A. Al-Mana, Mohamed A. Mattar, Halina Ekiert. Artemisia absinthium L.—Importance in the History of Medicine, the Latest Advances in Phytochemistry and Therapeutical, Cosmetological and Culinary Uses. Plants. 2020; 9 (9):1063.
Chicago/Turabian StyleAgnieszka Szopa; Joanna Pajor; Paweł Klin; Agnieszka Rzepiela; Hosam O. Elansary; Fahed A. Al-Mana; Mohamed A. Mattar; Halina Ekiert. 2020. "Artemisia absinthium L.—Importance in the History of Medicine, the Latest Advances in Phytochemistry and Therapeutical, Cosmetological and Culinary Uses." Plants 9, no. 9: 1063.
We performed field experiments to evaluate the influence of two extraction treatments, seaweed (Pterocladia capillacea S.G. Gmelin) water extraction (WE) and ultrasound-assisted water extraction (USWE) at three concentrations (5%, 10%, and 15%), as well as control NPK traditional mineral fertilizer on the growth, yield, minerals, and antioxidants of Jew’s Mallow (Corchorus olitorius L.) during the two seasons of 2016 and 2017 in Egypt. Plant height, number of leaves, and fresh weight of WE10 treatment were the highest (p < 0.05) as 59.67 cm, 10.67 and 2.41 kg m−2 in 2016, respectively, and 57.33 cm, 11.00 and 2.32 kg m−2 in 2017, respectively. WE10 and USWE5 treatments produced the highest dry matter (17.07%) in 2016 and (16.97%) in 2017, respectively. WE10 plants had an increased water productivity of 41.2% relative to control plants in both seasons. The highest chlorophyll ‘a’ was recorded after the WE10 treatment in 2016 and 2017 (17.79 μg g−1 and 17.84 μg g−1, respectively). The highest levels of total antioxidant capacity, total phenolics, and total flavonoids were also recorded after the WE10 treatment. Application of WE10 boosted growth, yield, minerals, and antioxidants of Jew’s Mallow. The CROPWAT model was used to estimate the evapotranspiration, irrigation water requirements, and yield response to irrigation scheduling. Our data showed a yield reduction in the initial growth stage if a limited amount of water was provided. Therefore, irrigation water should be provided during the most important stages of crop development with the choice of effective irrigation practices to avoid water losses, as this helps to maximize yield.
Mohamed Ashour; Ahmed A. El-Shafei; Hanan M. Khairy; Doaa Y. Abd-Elkader; Mohamed A. Mattar; Abed Alataway; Shimaa M. Hassan. Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow. Agronomy 2020, 10, 420 .
AMA StyleMohamed Ashour, Ahmed A. El-Shafei, Hanan M. Khairy, Doaa Y. Abd-Elkader, Mohamed A. Mattar, Abed Alataway, Shimaa M. Hassan. Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow. Agronomy. 2020; 10 (3):420.
Chicago/Turabian StyleMohamed Ashour; Ahmed A. El-Shafei; Hanan M. Khairy; Doaa Y. Abd-Elkader; Mohamed A. Mattar; Abed Alataway; Shimaa M. Hassan. 2020. "Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow." Agronomy 10, no. 3: 420.
Natural biostimulants combine different elicitors that may influence economic properties of herbal crops, such as mint. Mint (Mentha longifolia L.) plants were subjected to three water levels based on container substrate capacity (CSC; 100% CSC, 70% CSC, and 50% CSC) and/or applications of four biostimulants (CRADLE™, Mobilizer™, Nanozim De’Lite™ [ND], and Nanozim NXT™ [NN]). ND and NN exhibited higher vegetative growth and root dry weight than the control (without biostimulants) and other treatments. NN produced the highest fresh and dry mint yields under all water levels. Irrigation water-use efficiency (IWUE) of NN was highest (2.78 kg m−3) with 70% CSC, whereas the control produced the lowest IWUE (1.85 kg m−3) with 100% CSC. Biostimulants boosted physiological and metabolic responses, including gas exchange, leaf water potential, relative water content, and proline accumulation of stressed plants. NN treatment with 70% CSC had the highest essential oil (EO) ratio (3.35%). Under 70% and 50% CSC with NN treatment, the proportion of 1,8-cineol increased and that of pulegone decreased in EOs. Increased antioxidant activities, reduced H2O2 levels, and increased catalase and superoxide dismutase activities were observed. Applications of ND and NN during water stress conditions increased economic and medicinal properties of mint EOs with applications in the agricultural and pharmaceutical industries.
Hosam O. Elansary; Eman A. Mahmoud; Diaa O. El-Ansary; Mohamed A. Mattar. Effects of Water Stress and Modern Biostimulants on Growth and Quality Characteristics of Mint. Agronomy 2019, 10, 6 .
AMA StyleHosam O. Elansary, Eman A. Mahmoud, Diaa O. El-Ansary, Mohamed A. Mattar. Effects of Water Stress and Modern Biostimulants on Growth and Quality Characteristics of Mint. Agronomy. 2019; 10 (1):6.
Chicago/Turabian StyleHosam O. Elansary; Eman A. Mahmoud; Diaa O. El-Ansary; Mohamed A. Mattar. 2019. "Effects of Water Stress and Modern Biostimulants on Growth and Quality Characteristics of Mint." Agronomy 10, no. 1: 6.
This study addresses water-saving irrigation strategies, including deficit irrigation (DI) at 70% and 50% crop evapotranspiration, ETc (DI70 and DI50, respectively), and partial root-zone drying (PRD) at 70% and 50% ETc (PRD 70 and PRD 50, respectively) to investigate the response of the tomato (Lycopersicon esculentum L.) using a surface drip system in the field on a sandy loam soil during years 2017 and 2018. Full irrigation (FI) at 100% ETc was used as the control treatment. Results revealed that the soil water content values for the DI and PRD treatments were lower than those in the FI treatment. The net photosynthesis rate, stomatal conductance, and transpiration rate decreased with decreasing irrigation water, whereas the xylem abscisic acid content increased. A significant decrease in fresh and dry vegetative parts for DI and PRD treatments was detected compared to the FI treatment in 2017, whereas there were no significant differences in 2018. Both DI70 and PRD70 treatments had fresh and dry tomato yields similar to the ones in the FI treatment, whereas the corresponding yields were significantly lower under DI50 and PRD50 treatments. This resulted in a water productivity increase by, on average, 28.15% and 38.24%, for DI70 and PRD70 treatments, respectively, compared to the FI treatment. The DI and PRD treatments significantly affected the tomato fruit quality. Fruits under DI and PRD treatments accumulated higher amounts of total soluble solids, vitamin C, and titratable acidity compared to FI Fruits. Therefore, the use of water-saving practices is feasible for tomato production in areas where water supply is limited.
Mohamed A. Mattar; Tarek K. Zin El-Abedin; A. A. Alazba; Hussein M. Al-Ghobari. Soil water status and growth of tomato with partial root-zone drying and deficit drip irrigation techniques. Irrigation Science 2019, 38, 163 -176.
AMA StyleMohamed A. Mattar, Tarek K. Zin El-Abedin, A. A. Alazba, Hussein M. Al-Ghobari. Soil water status and growth of tomato with partial root-zone drying and deficit drip irrigation techniques. Irrigation Science. 2019; 38 (2):163-176.
Chicago/Turabian StyleMohamed A. Mattar; Tarek K. Zin El-Abedin; A. A. Alazba; Hussein M. Al-Ghobari. 2019. "Soil water status and growth of tomato with partial root-zone drying and deficit drip irrigation techniques." Irrigation Science 38, no. 2: 163-176.
Targeted profiling of polyphenols in trees may reveal valuable sources of natural compounds with major applications in pharmacology and disease control. The current study targeted the profiling of polyphenols using HPLC-DAD in Quercus robur, Q. macrocarpa and Q. acutissima bark extracts. Free radical scavenging of each extract was investigated using antioxidant assays. Antimicrobial activities against a wide spectrum of bacteria and fungi were explored, as well as anticancer activities against different cancer cell lines. The HPLC-DAD analyses revealed the availability of several polyphenols in high amounts, including ellagic acid (in Q. robur) and caffeic acid (in Q. macrocarpa) in all three species. The bioactivity assay revealed high antioxidant activity in Q. robur compared to that of the other species, as well as phenolic standards. The three oak bark extracts showed clear antibacterial activities against most bacteria tested, with the highest antibacterial activities in the extracts of Q. robur. In addition, the three extracts showed higher antibacterial activities against Pseudomonas aeruginosa, Micrococcus flavus, and Escherichia coli compared to that of other bacteria. There were strong antifungal activities against some fungi, such as Aspergillus flavus, Penicillium funiculosum, and Penicillium ochrochloron. There were also noticeable anticancer activities against MCF-7, HeLa, Jurkat, and HT-29 cell lines, with the highest anticancer activity in the extracts of Q. robur. This is the first study that reveals not only novel sources of important polyphenols (e.g. ellagic acid) in Q. robur, Q. macrocarpa and Q. acutissima bark but also their anticancer activities against diverse cancer cell lines.
Hosam O. Elansary; Agnieszka Szopa; Paweł Kubica; Halina Ekiert; Mohamed A. Mattar; Mohamed A. Al-Yafrasi; Diaa O. El-Ansary; Tarek K. Zin El-Abedin; Kowiyou Yessoufou. Polyphenol Profile and Pharmaceutical Potential of Quercus spp. Bark Extracts. Plants 2019, 8, 486 .
AMA StyleHosam O. Elansary, Agnieszka Szopa, Paweł Kubica, Halina Ekiert, Mohamed A. Mattar, Mohamed A. Al-Yafrasi, Diaa O. El-Ansary, Tarek K. Zin El-Abedin, Kowiyou Yessoufou. Polyphenol Profile and Pharmaceutical Potential of Quercus spp. Bark Extracts. Plants. 2019; 8 (11):486.
Chicago/Turabian StyleHosam O. Elansary; Agnieszka Szopa; Paweł Kubica; Halina Ekiert; Mohamed A. Mattar; Mohamed A. Al-Yafrasi; Diaa O. El-Ansary; Tarek K. Zin El-Abedin; Kowiyou Yessoufou. 2019. "Polyphenol Profile and Pharmaceutical Potential of Quercus spp. Bark Extracts." Plants 8, no. 11: 486.
Laboratory experiments were used to estimate the hydraulic performance of emitters, i.e., the emitter flow variation (qvar) and manufacturer’s coefficient of variation (CVm), by measuring the discharge of different labyrinth-channel emitters at different operating pressures (P) and water temperatures (T). Considering the importance of the structural parameters of the labyrinth-channel emitters in drip irrigation design, which has been experimentally confirmed, artificial neural network (ANN) and gene expression programming (GEP) models were developed to predict qvar and CVm. The ANN and GEP models were trained and tested using structural parameters (including the number, height (H), and spacing of trapezoidal units and the flow path width and length) of different labyrinth-channel emitters, P and T as the input variables, and qvar and CVm as the outputs. Statistical criteria, including the coefficients of correlation (r), relative root-mean-square error (RRMSE), and mean absolute error (MAE), were used to examine the accuracy of the developed models. The ANN models exhibited good correlation with experimental values, with high r values 0.995 and 0.969 for qvar and 0.997 and 0.947 for CVm in the training and testing processes, respectively. The ANN models had lower RRMSE and MAE values than the GEP models. Furthermore, H was the dominant variable for obtaining the most accurate prediction model. The results confirm that the ANN models are superior to the GEP models for the prediction of the hydraulic performance of emitters.
Mohamed A. Mattar; Ahmed I. Alamoud; Ahmed Mohamed Abdel Ghany Othman; Hosam O. Elansary; Abdel-Halim H. Farah. Hydraulic performance of labyrinth-channel emitters: experimental study, ANN, and GEP modeling. Irrigation Science 2019, 38, 1 -16.
AMA StyleMohamed A. Mattar, Ahmed I. Alamoud, Ahmed Mohamed Abdel Ghany Othman, Hosam O. Elansary, Abdel-Halim H. Farah. Hydraulic performance of labyrinth-channel emitters: experimental study, ANN, and GEP modeling. Irrigation Science. 2019; 38 (1):1-16.
Chicago/Turabian StyleMohamed A. Mattar; Ahmed I. Alamoud; Ahmed Mohamed Abdel Ghany Othman; Hosam O. Elansary; Abdel-Halim H. Farah. 2019. "Hydraulic performance of labyrinth-channel emitters: experimental study, ANN, and GEP modeling." Irrigation Science 38, no. 1: 1-16.
In this study, field experiments were conducted to investigate the effects of two water-saving practices—partial root-zone drying (PRD) and deficit irrigation (DI)—on potato growth and yield in comparison with full irrigation (FI). The required FI amount was applied to the potato plants to enable 100% crop evapotranspiration, and the plants received 70% and 50% of the irrigation amount of FI for DI (DI70 and DI50) and PRD (PRD70 and PRD50), respectively. The physiological characteristics of the potatoes during the 2014–2015 seasons indicated that the relative chlorophyll contents were not significantly higher for the DI and PRD treatments than for the FI treatment. The DI50 had the lowest net photosynthesis rate (p < 0.05) while DI50 and PRD50 had significantly lower stomatal conductance (gs) values in both years. Meanwhile, the values of the PRD treatments were lower than those of DI treatments based on the transpiration rates. The xylem (abscisic acid) based on PRD50 had an average increase of 0.38 mol/m2 s due to decreasing gs values compared with other water-saving irrigation treatments. However, the FI and DI treatments had increased fresh tuber yields compared with the yields of PRD treatments. Furthermore, the PRD70 and PRD50 treatments significantly reduced the water productivity (WP) values by 30.16% and 41.32%, respectively, relative to that of FI.
Tarek K. Zin El-Abedin; Mohamed A. Mattar; Hussein M. Al-Ghobari; Abdulrahman A. Alazba. Water-Saving Irrigation Strategies in Potato Fields: Effects on Physiological Characteristics and Water Use in Arid Region. Agronomy 2019, 9, 172 .
AMA StyleTarek K. Zin El-Abedin, Mohamed A. Mattar, Hussein M. Al-Ghobari, Abdulrahman A. Alazba. Water-Saving Irrigation Strategies in Potato Fields: Effects on Physiological Characteristics and Water Use in Arid Region. Agronomy. 2019; 9 (4):172.
Chicago/Turabian StyleTarek K. Zin El-Abedin; Mohamed A. Mattar; Hussein M. Al-Ghobari; Abdulrahman A. Alazba. 2019. "Water-Saving Irrigation Strategies in Potato Fields: Effects on Physiological Characteristics and Water Use in Arid Region." Agronomy 9, no. 4: 172.
Tree bark represents an important source of medicinal compounds that may be useful for cancer therapy. In the current study, high-performance liquid chromatography with diode-array detection (HPLC-DAD) was used to determine the profile of the phenolic compounds of Catalpa speciosa, Taxus cuspidata, and Magnolia acuminata bark extracts. The antioxidant and anticancer bioactivities against different cancer cell lines were investigated. M. acuminata exerted significantly higher antioxidant activities in the diphenyl picrylhydrazine and β-carotene-linoleic acid assays than the other species. In C. speciosa, novel profiles of phenolic acids (ferulic acid was the predominant compound) and catechin were detected. In T. cuspidata, six phenolic acids were detected; the predominant compounds were hydroxycaffeic acid and protocatechuic acid. In M. acuminata, two phenolic acids and three catechins were detected; catechin was the predominant compound. The three species exerted clear anticancer activity against MCF-7, HeLa, Jurkat, T24, and HT-29 cells, with the strongest activity found in the extracts from M. acuminata. No antiproliferative activity against normal cells was found. Flow cytometry revealed greater accumulation of necrotic and early/late apoptotic cells in various treated cancer cells than in untreated control cells, and protocatechuic acid induced a similar accumulation of necrotic cells to that of the bark extracts. Caspase-3 and -7 activity was increased in cancer cells treated with different bark extracts; the highest activity was found in the M. acuminata treatment. Our results suggested that the treatment of cancer cells with bark extracts of M. acuminata, C. speciosa, and T. cuspidata, and protocatechuic acid induced apoptosis, suggesting an association between anticancer activities and individual phenolic compounds.
Hosam O. Elansary; Agnieszka Szopa; Paweł Kubica; Fahed A. Al-Mana; Eman A. Mahmoud; Tarek K. Ali Zin El-Abedin; Mohamed A. Mattar; Halina Ekiert. Phenolic Compounds of Catalpa speciosa, Taxus cuspidate, and Magnolia acuminata have Antioxidant and Anticancer Activity. Molecules 2019, 24, 412 .
AMA StyleHosam O. Elansary, Agnieszka Szopa, Paweł Kubica, Fahed A. Al-Mana, Eman A. Mahmoud, Tarek K. Ali Zin El-Abedin, Mohamed A. Mattar, Halina Ekiert. Phenolic Compounds of Catalpa speciosa, Taxus cuspidate, and Magnolia acuminata have Antioxidant and Anticancer Activity. Molecules. 2019; 24 (3):412.
Chicago/Turabian StyleHosam O. Elansary; Agnieszka Szopa; Paweł Kubica; Fahed A. Al-Mana; Eman A. Mahmoud; Tarek K. Ali Zin El-Abedin; Mohamed A. Mattar; Halina Ekiert. 2019. "Phenolic Compounds of Catalpa speciosa, Taxus cuspidate, and Magnolia acuminata have Antioxidant and Anticancer Activity." Molecules 24, no. 3: 412.
In this study, reference evapotranspiration (ETo) is modeled as one of the major items of hydrological applications from different combinations of climatic variables using two different techniques: gene expression programming (GEP) and multiple linear regression (MLR). The data used in modeling were collected from weather stations in Egypt through the CLIMWAT database. The Penman–Monteith FAO-56 equation was considered as a reference target for ETo values depending on the entire climatic variables. The developed ETo models’ performances were compared and evaluated with regard to their predictive abilities using statistical criteria to identify the superiority of one modeling approach over the others and determine climatic variables which have a significant effect on ETo. The results indicated that GEP and MLR models’ contribution toward mean relative humidity and wind speed at 2 m height is greater compared to that of other variables. Meanwhile, when adding temperature data to models, solar radiation has a slight effect on increasing the accuracy of ETo estimate. Moreover, the lower statistical error criteria values of GEP models confirmed their better performance than MLR models and other empirical equations.
Mohamed A. Mattar; A. A. Alazba. GEP and MLR approaches for the prediction of reference evapotranspiration. Neural Computing and Applications 2018, 31, 5843 -5855.
AMA StyleMohamed A. Mattar, A. A. Alazba. GEP and MLR approaches for the prediction of reference evapotranspiration. Neural Computing and Applications. 2018; 31 (10):5843-5855.
Chicago/Turabian StyleMohamed A. Mattar; A. A. Alazba. 2018. "GEP and MLR approaches for the prediction of reference evapotranspiration." Neural Computing and Applications 31, no. 10: 5843-5855.
Hussein M. Al-Ghobari; Mohamed S. El-Marazky; Ahmed Z. Dewidar; Mohamed A. Mattar. Prediction of wind drift and evaporation losses from sprinkler irrigation using neural network and multiple regression techniques. Agricultural Water Management 2018, 195, 211 -221.
AMA StyleHussein M. Al-Ghobari, Mohamed S. El-Marazky, Ahmed Z. Dewidar, Mohamed A. Mattar. Prediction of wind drift and evaporation losses from sprinkler irrigation using neural network and multiple regression techniques. Agricultural Water Management. 2018; 195 ():211-221.
Chicago/Turabian StyleHussein M. Al-Ghobari; Mohamed S. El-Marazky; Ahmed Z. Dewidar; Mohamed A. Mattar. 2018. "Prediction of wind drift and evaporation losses from sprinkler irrigation using neural network and multiple regression techniques." Agricultural Water Management 195, no. : 211-221.
The Penman-Monteith FAO-56 equation requires the complete climatic records for estimating reference evapotranspiration (ETo). The present study is aimed at developing and evaluating a gene expression programming (GEP) model for estimating mean monthly ETo by using minimal amount of climatic data. The data used in the analysis are collected from 32 weather stations in Egypt through the CLIMWAT database. The results showed that the accuracy of the GEP model significantly improved when either mean relative humidity (RH) or wind speed at 2-m height (u2) was used as additional input variables. The GEP model with the inputs as maximum and minimum air temperature, RH, and u2 showed the lowest root mean square error (0.426 mm d−1 and 0.430 mm d−1) and, the highest coefficient of determination, (0.963 and 0.962) overall index of model performance (0.960 and 0.960), and index of agreement (0.991 and 0.990) for training and testing sets, respectively. Comparing the results of GEP models with other empirical models showed that the GEP technique are more accurate and can be employed successfully in modelling ETo.
Mohamed Mattar. Using gene expression programming in monthly reference evapotranspiration modeling: A case study in Egypt. Agricultural Water Management 2017, 198, 28 -38.
AMA StyleMohamed Mattar. Using gene expression programming in monthly reference evapotranspiration modeling: A case study in Egypt. Agricultural Water Management. 2017; 198 ():28-38.
Chicago/Turabian StyleMohamed Mattar. 2017. "Using gene expression programming in monthly reference evapotranspiration modeling: A case study in Egypt." Agricultural Water Management 198, no. : 28-38.
Tarek K. Zin El-Abedin; Mohamed Mattar; A.A. Alazba; Hussein M. Al-Ghobari. Comparative effects of two water-saving irrigation techniques on soil water status, yield, and water use efficiency in potato. Scientia Horticulturae 2017, 225, 525 -532.
AMA StyleTarek K. Zin El-Abedin, Mohamed Mattar, A.A. Alazba, Hussein M. Al-Ghobari. Comparative effects of two water-saving irrigation techniques on soil water status, yield, and water use efficiency in potato. Scientia Horticulturae. 2017; 225 ():525-532.
Chicago/Turabian StyleTarek K. Zin El-Abedin; Mohamed Mattar; A.A. Alazba; Hussein M. Al-Ghobari. 2017. "Comparative effects of two water-saving irrigation techniques on soil water status, yield, and water use efficiency in potato." Scientia Horticulturae 225, no. : 525-532.
Mohamed A. Mattar; Ahmed I. Alamoud. Gene expression programming approach for modeling the hydraulic performance of labyrinth-channel emitters. Computers and Electronics in Agriculture 2017, 142, 450 -460.
AMA StyleMohamed A. Mattar, Ahmed I. Alamoud. Gene expression programming approach for modeling the hydraulic performance of labyrinth-channel emitters. Computers and Electronics in Agriculture. 2017; 142 ():450-460.
Chicago/Turabian StyleMohamed A. Mattar; Ahmed I. Alamoud. 2017. "Gene expression programming approach for modeling the hydraulic performance of labyrinth-channel emitters." Computers and Electronics in Agriculture 142, no. : 450-460.