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Increasing rice production has become one of the ultimate goals for South Asian countries. The yield and area under rice production are also facing threats due to the consequences of climate change such as erratic rainfall and seasonal variation. Thus, the main aim of this work was to find out the supply response of rice in Malaysia in relation to both price and non-price factors. To achieve this target, time series analysis was conducted on data from 1970 to 2014 using cointegration, unit root test, and the vector error correction model. The results showed that the planted area and rainfall have a significant effect on rice production; however, the magnitude of the impact of rainfall is less conspicuous for off-season (season 2) rice as compared to main-season rice (season 1). The speed of adjustment from short-run to long-run for season-1 rice production is almost two-and-a-half years (five production seasons), while for season-2 production, it is only about one-and-a-half year (three production seasons). Consequently, the study findings imply the supply of water to be enhanced through better water infrastructure for both seasons. Moreover, the area under season 2 is continuously declining to the point where the government has to make sure that farmers are able to cultivate the same area for rice production by providing uninterrupted supply of critical inputs, particularly water, seed and fertilizers.
Ghulam Mustafa; Azhar Abbas; Bader Alotaibi; Fahd Aldosri. Do Erratic Rainfalls Hamper Grain Production? Analysis of Supply Response of Rice to Price and Non-Price Factors. Agronomy 2021, 11, 1463 .
AMA StyleGhulam Mustafa, Azhar Abbas, Bader Alotaibi, Fahd Aldosri. Do Erratic Rainfalls Hamper Grain Production? Analysis of Supply Response of Rice to Price and Non-Price Factors. Agronomy. 2021; 11 (8):1463.
Chicago/Turabian StyleGhulam Mustafa; Azhar Abbas; Bader Alotaibi; Fahd Aldosri. 2021. "Do Erratic Rainfalls Hamper Grain Production? Analysis of Supply Response of Rice to Price and Non-Price Factors." Agronomy 11, no. 8: 1463.
Recently, there has been increasing concern about reducing and replacing chemical fertilizers with biofertilizers to enhance soil fertility and maintain agroecosystems and sustainable agricultural production. Given that knowledge of biofertilizers is information-intensive, the lack of information-seeking behavior (ISB) might be the primary constraint for farmers adopting biofertilizers. This study aimed to analyze how ISB influences farmers’ adoption of biofertilizers, using a sample of 228 onion farmers in Al-Ahsa Governorate, Saudi Arabia. The results indicate that most farmers had a moderate level of ISB. The most frequently accessed sources were mobile applications, extension institutions, and progressive farmers. The results of cluster analysis show that farmers’ ISB differed significantly according to their main occupation. Among the onion farmers, 35%had adopted biofertilizers. The findings also reveal that farm size, attitude toward biofertilizers, the credibility of information sources, and the usefulness of the information positively and significantly influence farmers’ adoption of biofertilizers. It was concluded that understanding the relationship between adoption and ISB could assist policymakers in focusing on knowledge diffusion when designing extension programs and advisory services to facilitate better usage of biofertilizers.
Hazem Kassem; Bader Alotaibi; Fahd Aldosri; Muhammad Muddassir. Exploring the Relationship between Information-Seeking Behavior and Adoption of Biofertilizers among Onion Farmers. Agronomy 2021, 11, 1258 .
AMA StyleHazem Kassem, Bader Alotaibi, Fahd Aldosri, Muhammad Muddassir. Exploring the Relationship between Information-Seeking Behavior and Adoption of Biofertilizers among Onion Farmers. Agronomy. 2021; 11 (6):1258.
Chicago/Turabian StyleHazem Kassem; Bader Alotaibi; Fahd Aldosri; Muhammad Muddassir. 2021. "Exploring the Relationship between Information-Seeking Behavior and Adoption of Biofertilizers among Onion Farmers." Agronomy 11, no. 6: 1258.
The red palm weevil (RPW) (Rhynchophorus ferruginous) is one of the most serious pest insects threatening the sustainability of the date palm sector (Phoenix dactylifera L.). Nevertheless, a gap exists in the body of knowledge regarding patterns in farmers’ adoption of integrated pest management (IPM) for RPW control and how their knowledge of RPW symptomology influences IPM adoption. Data were collected using structured questionnaires from 183 palm growers in Al-Ahsa Governorate, Saudi Arabia. The results indicate that most farmers had insufficient knowledge to visually diagnose RPW symptoms and damage. Farmers moderately adopted preventive measures recommended for protection from RPW infestation. Only 13.11% of the farmers exhibited a high rate of adoption of pest management practices for RPW control and eradication. The findings revealed a strong positive association (0.8, p < 0.01) between the knowledge level regarding symptoms and IPM adoption level, whereby the respondents with more knowledge of RPW symptoms showed a higher level of adoption in all IPM categories. This study contributes to the development of our understanding of the social behaviors and risks associated with RPW. This might enhance the quality of awareness campaigns and extension programs and assist in developing a visual inspection protocol for RPW infestation for farmers.
Hazem S. Kassem; Bader Alhafi Alotaibi; Ali Ahmed; Fahd O. Aldosri. Sustainable Management of the Red Palm Weevil: The Nexus between Farmers’ Adoption of Integrated Pest Management and Their Knowledge of Symptoms. Sustainability 2020, 12, 9647 .
AMA StyleHazem S. Kassem, Bader Alhafi Alotaibi, Ali Ahmed, Fahd O. Aldosri. Sustainable Management of the Red Palm Weevil: The Nexus between Farmers’ Adoption of Integrated Pest Management and Their Knowledge of Symptoms. Sustainability. 2020; 12 (22):9647.
Chicago/Turabian StyleHazem S. Kassem; Bader Alhafi Alotaibi; Ali Ahmed; Fahd O. Aldosri. 2020. "Sustainable Management of the Red Palm Weevil: The Nexus between Farmers’ Adoption of Integrated Pest Management and Their Knowledge of Symptoms." Sustainability 12, no. 22: 9647.
Resveratrol (3,4,5-Trihydroxy-trans-stilbene) is a naturally occurring polyphenol that exhibits beneficial pleiotropic health effects. It is one of the most promising natural molecules in the prevention and treatment of chronic diseases and autoimmune disorders. One of the key limitations in the clinical use of resveratrol is its extensive metabolic processing to its glucuronides and sulfates. It has been estimated that around 75% of this polyphenol is excreted via feces and urine. To possibly alleviate the extensive metabolic processing and improve bioavailability, we have added segments of acetylsalicylic acid to resveratrol in an attempt to maintain the functional properties of both. We initially characterized resveratrol-aspirin derivatives as products that can inhibit cytochrome P450 Family 1 Subfamily A Member 1 (CYP1A1) activity, DNA methyltransferase (DNMT) activity, and cyclooxygenase (COX) activity. In this study, we provide a detailed analysis of how resveratrol and its aspirin derivatives can inhibit nuclear factor kappa B (NFκB) activation, cytokine production, the growth rate of cancer cells, and in vivo alleviate intestinal inflammation and tumor growth. We identified resveratrol derivatives C3 and C11 as closely preserving resveratrol bioactivities of growth inhibition of cancer cells, inhibition of NFκB activation, activation of sirtuin, and 5’ adenosine monophosphate-activated protein kinase (AMPK) activity. We speculate that the aspirin derivatives of resveratrol would be more metabolically stable, resulting in increased efficacy for treating immune disorders and as an anti-cancer agent.
Mohamed Salla; Vrajesh Pandya; Khushwant S. Bhullar; Evan Kerek; Yoke Fuan Wong; Robyn Losch; Joe Ou; Fahad S. Aldawsari; Carlos Velazquez-Martinez; Aducio Thiesen; Jason R. B. Dyck; Basil P. Hubbard; Shairaz Baksh. Resveratrol and Resveratrol-Aspirin Hybrid Compounds as Potent Intestinal Anti-Inflammatory and Anti-Tumor Drugs. Molecules 2020, 25, 3849 .
AMA StyleMohamed Salla, Vrajesh Pandya, Khushwant S. Bhullar, Evan Kerek, Yoke Fuan Wong, Robyn Losch, Joe Ou, Fahad S. Aldawsari, Carlos Velazquez-Martinez, Aducio Thiesen, Jason R. B. Dyck, Basil P. Hubbard, Shairaz Baksh. Resveratrol and Resveratrol-Aspirin Hybrid Compounds as Potent Intestinal Anti-Inflammatory and Anti-Tumor Drugs. Molecules. 2020; 25 (17):3849.
Chicago/Turabian StyleMohamed Salla; Vrajesh Pandya; Khushwant S. Bhullar; Evan Kerek; Yoke Fuan Wong; Robyn Losch; Joe Ou; Fahad S. Aldawsari; Carlos Velazquez-Martinez; Aducio Thiesen; Jason R. B. Dyck; Basil P. Hubbard; Shairaz Baksh. 2020. "Resveratrol and Resveratrol-Aspirin Hybrid Compounds as Potent Intestinal Anti-Inflammatory and Anti-Tumor Drugs." Molecules 25, no. 17: 3849.
N-nitrosodimethylamine (NDMA) is a carcinogenic contaminant that was accidentally discovered in drugs, such as valsartan and ranitidine, and more recently in metformin. Liquid chromatography tandem mass spectrometry (LC-MS/MS) is the method typically used for the analysis of NDMA in ranitidine. It seems that using gas chromatography (GC) for NDMA analysis is problematic as ranitidine is sensitive to high temperatures. In the present study, we assessed the usefulness of solid-phase microextraction (SPME) as a method of extraction and introduction into the GC. When using headspace (HS) and liquid injection modes in GC for NDMA analysis in ranitidine, higher NDMA levels were detected compared to using LC-MS/MS. Interestingly, using HS-SPME-GC-MS was advantageous because we could avoid the high temperature utilized in the liquid injection and HS modes. Moreover, the results obtained using HS-SPME-GC-MS provided a good match with those achieved using LC-MS/MS. The feasibility of using HS-SPME-GC-MS to successfully analyze NDMA in ranitidine opens new opportunities for the analysis of this contaminant in pharmaceuticals, specifically those that are heat-labile.
Yahya M. Alshehri; Thamer S. Alghamdi; Fahad S. Aldawsari. HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products. Journal of Pharmaceutical and Biomedical Analysis 2020, 191, 113582 .
AMA StyleYahya M. Alshehri, Thamer S. Alghamdi, Fahad S. Aldawsari. HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products. Journal of Pharmaceutical and Biomedical Analysis. 2020; 191 ():113582.
Chicago/Turabian StyleYahya M. Alshehri; Thamer S. Alghamdi; Fahad S. Aldawsari. 2020. "HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products." Journal of Pharmaceutical and Biomedical Analysis 191, no. : 113582.
Essential oils (EOs) have been described as promising eco-friendly secondary products of aromatic plants with several biological activities. The present study aimed to characterize the chemical composition and explore phytotoxic and antimicrobial activities of Teucrium polium and Thymus decussatus EOs extracted using hydrodistillation (HD) and microwave-assisted extraction (MAE) methods. Twenty-seven and twenty-eight compounds were identified from HD and MAE extracted EOs of T. polium, respectively. The oxygenated sesquiterpenes (57.68%) were characterized as the main components of the hydrodistilled EO with a prominence of 6-epi-shyobunol (33.00%), while sesquiterpene hydrocarbons (54.48%) were the main components of the MAE method, with a prominence of delta-cadinene (25.13%). Eighteen and nineteen compounds, were characterized in T. decussatus EOs extracted using HD and MAE methods, respectively, and oxygenated monoterpenes represented the main components of both EOs with carvacrol (94.40% and 75.91%, respectively) as the main compound. The EOs extracted using the MAE method were slightly more phytotoxic than those extracted using the HD method. The T. decussatus EO extracted using the MAE method showed a higher inhibitory effect than T. polium by 16-, 32-, and 24-fold, regarding seed germination, shoot, and root growth of lettuce, respectively. Moreover, EOs extracted by HD method showed a similar pattern with 16-, 28-, and 14-fold effects. Both T. decussatus EOs exhibited potent inhibitory effect against all tested bacteria with an inhibition zone of 34–39 mm and the lowest minimum inhibitory concentration (MIC) of 0.49, 0.98, and 1.95 μg/mL against Aspergillus niger, Escherichia coli, and Staphylococcus aureus, respectively. However, the EOs of T. polium showed weak antibacterial activity and no antifungal effect. Further studies are needed for the characterization of bioactive major compounds, either singular or synergistic, at field scale and to determine their modes of action and safety.
Ibrahim Saleh; Ahmed Abd-Elgawad; Abd El-Nasser El Gendy; Abeer Abd El Aty; Tarik Mohamed; Hazem Kassem; Fahd Aldosri; Abdelsamed ElShamy; Mohamed-Elamir F. Hegazy. Phytotoxic and Antimicrobial Activities of Teucrium polium and Thymus decussatus Essential Oils Extracted Using Hydrodistillation and Microwave-Assisted Techniques. Plants 2020, 9, 716 .
AMA StyleIbrahim Saleh, Ahmed Abd-Elgawad, Abd El-Nasser El Gendy, Abeer Abd El Aty, Tarik Mohamed, Hazem Kassem, Fahd Aldosri, Abdelsamed ElShamy, Mohamed-Elamir F. Hegazy. Phytotoxic and Antimicrobial Activities of Teucrium polium and Thymus decussatus Essential Oils Extracted Using Hydrodistillation and Microwave-Assisted Techniques. Plants. 2020; 9 (6):716.
Chicago/Turabian StyleIbrahim Saleh; Ahmed Abd-Elgawad; Abd El-Nasser El Gendy; Abeer Abd El Aty; Tarik Mohamed; Hazem Kassem; Fahd Aldosri; Abdelsamed ElShamy; Mohamed-Elamir F. Hegazy. 2020. "Phytotoxic and Antimicrobial Activities of Teucrium polium and Thymus decussatus Essential Oils Extracted Using Hydrodistillation and Microwave-Assisted Techniques." Plants 9, no. 6: 716.
Probiotics are pharmaceutical products that contain living bacteria and are used to manage certain disorders, as well as to enhance general health. There are some reports criticizing the quality of these products, highlighting findings such as pathogen contamination and misleading labeling. Regulation and control of probiotics vary between international regulatory authorities, creating a gap between probiotic manufacturers and regulatory bodies. In this article, the probiotics available in Saudi Arabia were analyzed in regard to their presented method of identification and labeling information. Only 1 of 22 products had confirmed the bacterial strain using a genotypic method; the rest presented various phenotypic methods. More than half of the reviewed products did not contain the strain designation on the outside labeling of the probiotic. The Saudi Food and Drug Authority should act by adopting a new guideline to control and regulate probiotics in Saudi Arabia, which could then be expanded to cover gulf countries (GCC).
Fahad S. Aldawsari; Bandar S. Bin Helel; Yahya M. Al Shehry; Yousef T. Alharbi; Mubark Al Abudahash. Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market. Therapeutic Innovation & Regulatory Science 2020, 54, 365 -369.
AMA StyleFahad S. Aldawsari, Bandar S. Bin Helel, Yahya M. Al Shehry, Yousef T. Alharbi, Mubark Al Abudahash. Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market. Therapeutic Innovation & Regulatory Science. 2020; 54 (2):365-369.
Chicago/Turabian StyleFahad S. Aldawsari; Bandar S. Bin Helel; Yahya M. Al Shehry; Yousef T. Alharbi; Mubark Al Abudahash. 2020. "Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market." Therapeutic Innovation & Regulatory Science 54, no. 2: 365-369.
Probiotics are pharmaceutical products that contain living bacteria and are used to manage certain disorders, as well as to enhance general health. There are some reports criticizing the quality of these products, highlighting findings such as pathogen contamination and misleading labeling. Regulation and control of probiotics vary between international regulatory authorities, creating a gap between probiotic manufacturers and regulatory bodies. In this article, the probiotics available in Saudi Arabia were analyzed in regard to their presented method of identification and labeling information. Only 1 of 22 products had confirmed the bacterial strain using a genotypic method; the rest presented various phenotypic methods. More than half of the reviewed products did not contain the strain designation on the outside labeling of the probiotic. Conclusion: The Saudi Food and Drug Authority should act by adopting a new guideline to control and regulate probiotics in Saudi Arabia, which could then be expanded to cover gulf countries (GCC).
Fahad S. Aldawsari; Bandar S. Bin Helel; Yahya M. Al Shehry; Yousef T. Alharbi; Mubark Al Abudahash. Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market. Therapeutic Innovation & Regulatory Science 2019, 1 .
AMA StyleFahad S. Aldawsari, Bandar S. Bin Helel, Yahya M. Al Shehry, Yousef T. Alharbi, Mubark Al Abudahash. Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market. Therapeutic Innovation & Regulatory Science. 2019; ():1.
Chicago/Turabian StyleFahad S. Aldawsari; Bandar S. Bin Helel; Yahya M. Al Shehry; Yousef T. Alharbi; Mubark Al Abudahash. 2019. "Probiotics and Their Quality-Related Concerns: Highlights From the Saudi Arabian Market." Therapeutic Innovation & Regulatory Science , no. : 1.
Inappropriate application of pesticides is quite common in the study area, causing health issues and in some cases fatalities. The intent of the current study is to gauge the farmers’ level of knowledge on the safe usage of pesticides and biosafety to keep the famers healthy through the focused extension programs. The study is carried out in 41 union councils of Tehsil Sahiwal, District Sahiwal, Punjab, Pakistan. Data are collected through a cluster sampling technique by conducting face-to-face interviews. Statistical analysis is used to determine relationships and interpret them. The findings show that the majority of farmers (87.2%) earn their livelihoods from farming and 2.1% are traders. More than half of the respondents (51.8%) own small land-holdings with an area of 4–8 ha, with only 16.4% having a land area of more than 12 ha. The results also reveal that the majority of respondents obtain information from private agents and only about one third (34.4%) respondents get information on the safe usage of pesticides from the Department of Agriculture (Extension). The internet has emerged as a fast and reliable source of information in the new paradigm; however, only 14.4% of the respondents take advantage of this economical and fast information tool/medium. The findings also reveal that the farmers employ unhealthy and poor practices by not following the recommendations regarding the safe usage of pesticides. The study also reveals that more than half of the farmers (54.4%) use unsafe storage practices on their farms, and about 48.2% do not follow the instructions. Inappropriate application of pesticides can have negative effects on human health and the adoption safety measures are necessary to avoid the harmful effects of pesticides. Due to high illiteracy in the area, farmers mainly seek advice of neighboring farmers, having ignorance on the biosafety issues. Variables like education level, land ownership, total land size and the trainings on safe pesticide usage significantly influence the knowledge level of farmers on the safe usage of pesticides. Farmers do not follow the recommendations of the extension department or the instructions printed on pesticide bottles/containers, therefore educational (formal and informal) and training programs are necessary on the safe pesticide usage to upgrade their skills and expertise on safe usage of pesticides and the importance of biosafety.
Muhammad Mubushar; Fahad O. Aldosari; Mirza Baig; Bader M. Alotaibi; Abdul Qader Khan. Assessment of farmers on their knowledge regarding pesticide usage and biosafety. Saudi Journal of Biological Sciences 2019, 26, 1903 -1910.
AMA StyleMuhammad Mubushar, Fahad O. Aldosari, Mirza Baig, Bader M. Alotaibi, Abdul Qader Khan. Assessment of farmers on their knowledge regarding pesticide usage and biosafety. Saudi Journal of Biological Sciences. 2019; 26 (7):1903-1910.
Chicago/Turabian StyleMuhammad Mubushar; Fahad O. Aldosari; Mirza Baig; Bader M. Alotaibi; Abdul Qader Khan. 2019. "Assessment of farmers on their knowledge regarding pesticide usage and biosafety." Saudi Journal of Biological Sciences 26, no. 7: 1903-1910.
This study used quantitative and qualitative methods to collect data, using questionnaires and interviews, from 792 randomly-selected farmers in two of the governorates in the Nile Delta Region, Egypt. A workshop was organized for 59 extension professionals working in the two governorates, looking at how the adaptive capacity of the agricultural sector towards climate change was being guided by policy-makers. Two focus groups were used: one with senior officials from the regional governorates and the other with central government administrators from the Ministry of Agriculture and Land Reclamation. The study findings suggested that 51.9% of the investigated farmers at the two targeted governorates had no knowledge about the climate change phenomenon. Maximizing the use of manure, changing crop patterns, and crop rotation were the adaptation measures most commonly adopted by aware respondents against climate change. Results of a probit model analysis indicated that farmers’ ability to adapt to climate change was influenced by education level, farm size, diversity of production, and membership of a Water User Association. The study recommended some extension interventions to raise awareness of the anticipated effects of climate change.
Hazem S. Kassem; Abdel Raouf Suleiman Bello; Bader M. Alotaibi; Fahd O. Aldosri; Gary S. Straquadine. Climate Change Adaptation in the Delta Nile Region of Egypt: Implications for Agricultural Extension. Sustainability 2019, 11, 685 .
AMA StyleHazem S. Kassem, Abdel Raouf Suleiman Bello, Bader M. Alotaibi, Fahd O. Aldosri, Gary S. Straquadine. Climate Change Adaptation in the Delta Nile Region of Egypt: Implications for Agricultural Extension. Sustainability. 2019; 11 (3):685.
Chicago/Turabian StyleHazem S. Kassem; Abdel Raouf Suleiman Bello; Bader M. Alotaibi; Fahd O. Aldosri; Gary S. Straquadine. 2019. "Climate Change Adaptation in the Delta Nile Region of Egypt: Implications for Agricultural Extension." Sustainability 11, no. 3: 685.
Sheep and goat farming is a major source of income in the rural areas of Al-Wadiah in Najran region of Southern Saudi Arabia. The study aims to identify the factors and parameters that influence gender participation in sheep and goat farming. Data were collected by interviewing 167 high school students, including 70 male and 97 female students, in Al-Wadiah, by using the simple random sampling technique. Data were statistically analyzed to establish the relationship between gender and participation in sheep and goat farming. The study revealed significant differences between the two genders, for instance, male herders were more experienced, received more benefits, showed greater interest in discussions on topics related to sheep and goat farming, followed information from TV and radio, and received more services offered by veterinary clinics, which proved more beneficial for them. On the other hand, female herders received fewer services, and the veterinary clinics proved less beneficial for them. However, the correlation between the participation of both genders in sheep and goats management was non-significant toward the statement "feeling ashamed of participating in sheep and goat farming." Generally, sheep and goat rearing proves more beneficial for male participants than female participants, owing to their greater experience and interest in livestock farming. Moreover, they receive more benefits from TV, radio and veterinary clinics to maintain better health of their livestock. Both male and female herders contribute equally to sheep and goat farming by limiting the time spent on their daily routine. This study would enable policymakers and planners to develop more strategies and extension education programs to overcome the identified barriers and improve the livelihood of herders through their enhanced participation in remote areas.
Fahad O. Aldosari. Gender participation in sheep and goat farming in Najran, Southern Saudi Arabia. Saudi Journal of Biological Sciences 2017, 25, 144 -148.
AMA StyleFahad O. Aldosari. Gender participation in sheep and goat farming in Najran, Southern Saudi Arabia. Saudi Journal of Biological Sciences. 2017; 25 (1):144-148.
Chicago/Turabian StyleFahad O. Aldosari. 2017. "Gender participation in sheep and goat farming in Najran, Southern Saudi Arabia." Saudi Journal of Biological Sciences 25, no. 1: 144-148.