As a result of the climate changes that are getting worse nowadays, drought stress (DS) is a major obstacle during crop life stages, which ultimately reduces tomato crop yields. So, there is a need to adopt modern approaches like a novel nutrient- and antioxidant-based formulation (NABF) for boosting tomato crop productivity. NABF consists of antioxidants (i.e., citric acid, salicylic acid, ascorbic acid, glutathione, and EDTA) and nutrients making it a fruitful growth stimulator against environmental stressors. As a first report, this study was scheduled to investigate the foliar application of NABF on growth and production traits, physio-biochemical attributes, water use efficiency (WUE), and nutritional, hormonal, and antioxidative status of tomato plants cultivated under full watering (100% of ETc) and DS (80 or 60% of ETc). Stressed tomato plants treated with NABF had higher DS tolerance through improved traits of photosynthetic efficiency, leaf integrity, various nutrients (i.e., copper, zinc, manganese, calcium, potassium, phosphorus, and nitrogen), and hormonal contents. These positives were a result of lower levels of oxidative stress biomarkers as a result of enhanced osmoprotectants (soluble sugars, proline, and soluble protein), and non-enzymatic and enzymatic antioxidant activities. Growth, yield, and fruit quality traits, as well as WUE, were improved. Full watering with application of 2.5 g NABF L⁻¹ collected 121 t tomato fruits per hectare as the best treatment. Under moderate DS (80% of ETc), NABF application increased fruit yield by 10.3%, while, under severe DS (40% of ETc), the same fruit yield was obtained compared to full irrigation without NABF. Therefore, the application of 60% ETc × NABF was explored to not only give a similar yield with higher quality compared to 100% ETc without NABF as well as increase WUE.

Three planting spaces (7, 10, and 13 cm.) between seeds and the effect of humic acid with the recommended dose (2 kg/feddan) and different rates of NPK fertilizer (humic 100%, NPK 100%, Humic + 25% NPK, Humic + 50% NPK, Humic + 75% NPK, Humic + 100% NPK, and control) were evaluated throughout the 2019 and 2020 seasons at Suez Governorate to determine their combined effect on the population density of certain insect pests, aphids (mainly Aphis gossypii, Myzus persicae, and Aphis craccivora), whitefly, Bemisia tabaci , jassids, Empasca lybica, and rust disease severity, Uromyces appendiculatus on common bean plants, Phaseolus vulgaris (Nepraska cultivar), and pod yield. Common bean plants cultivated in the closest and intermediate planting spaces (7 and 10 cm between hills) harbored the significantly highest infestation of all four pests. The significantly lowest infestation of the three studied insects and rust disease was obtained from common bean plants treated with humic acid plus 50% NPK. The four studied pests and produced yield were significantly affected by both two studied factors together, as the treatment of humic acid + 50% NPK at the three tested spacings (7, 10, and 13 cm) showed the lowest infestation and gave the highest weight of pods. Common bean plants grown in control treatments that did not receive any fertilizers were infested with the least significant numbers of the three studied insects due to the weakness of the plant and the lack of sufficient vegetation while infected by the heaviest rust disease severity.

Field study was conducted during two successive seasons of Williams banana Cv., grown in loam soil under surface flood irrigation system, located at Al-Daqahlia and Domietta Governorates, and in sandy soil at Beheira Governaratein Wadi Alnatroon, under drip irrigation system in Egypt. Our study investigated the relationship between application of alternative fungicides and chemical fungicides alone and combined on the severity of fungal root rot disease and their effects on banana trees growth. Disease reducing was observed by using inducer compounds i.e ascorbic acid, citric acid and salicylic acid and fertilizers i.e., potassium and copper combined with protective fungicide (copper oxychloride).The chemical fungicide of copper oxychloride, followed by the organic acids and nutrients fertilizers reflected the higher reduction in the percentages of frequency occurrences of fungal pathogens it reveals 10%,5%,0% and 0%frequency of Fusarium oxysporum, Macrophomina phaseolina , Verticillum Sp. and Botrydiplodia sp. respectively Though, the alternative fungicides in combined with protective fungicide is safety strategy for control banana root rot disease, which will defense banana trees against fungal root rot disease infection .On the other hand, the economic aspect plays the major role in this respect.