Two field experiments were conducted in sandy soil under salinity conditions in El-Emam El-Ghazaly Village, South El-Tahrir Province, El-Behaira Governorate, Egypt, during the two winter successive seasons 2006/2007 and 2007/2008 using three faba bean (Vicia faba L.) varieties, namely: Giza-461, Giza-3, Giza-429, to study the effect of foliar spray of commercially produced humic acid 2.9%, containing N,P,K (10,10,10%) used during the growing season at concentrations of 0, 5, 10, 20 cm/l on yield and yield components as well as nutrient uptake in faba bean seeds. There were significant differences between treatments and control for seed yield, biological yield and harvest index. The reaction between the treatments and the varieties showed that foliar application of humic acid for Giza-461 at concentration of 20 cm/l enhanced the number and weight of pods and straw as well as seed, biological yield. All treatments of humic increased the nutrient uptake more than control. The highest N uptake was attained with 20cm/l and the highest Fe and Mn uptake was with 5 cm/l. The highest uptake of nutrients as affected by humic foliar application was obtained from 20 cm/L with Giza-461, from 5 cm/L with Giza-3 and 10 cm/L with Giza-429. It seems that foliar application of humic acid under such conditions is more effective in improving seed nutrient uptake and yield of faba bean varieties under study.
This study aimed to reveal changes in morphological and physiological characters during growth and mature stages of rice plants in response to salinity stress and growth promoters. Salinity stress caused a decrease in vegetative growth, yield and yield components, while growth substances enhanced the leaf area and crop yield of rice plants under salinity stress. It could be concluded that growth promoters can partially alleviate the harmful effect of salinity stress on rice.
Background: Jojoba plants [Simmondsia chinensis (Link) Schneider] are appropriate to the semiarid regions; it has the ability to survive in a harsh desert environment and it is very drought-resistant and can be grown on marginal lands without replacing any existing crops. After that, Jojoba is a new oil-producing industrial crop, oil-producing cash crop, and has much of the interest in worldwide in recent years. So, processes are made to increase the seed yield of jojoba as requirements of essential fertilizer and evaluation of new clones. Two field experiments were conducted on five clones (S-BS-, S-700, 610, S-L, and S-G) aged 3 and 13 years from planting at North Sinai, Egypt on sandy soil to study the effect of foliar spray with nitrogen, phosphorus, and boron with three rates of NPB (00, NPB1 (N 1%, P 0.75%, and B 0.4%) and NPB2 (N 1.5%, P1.25% and B 0.8%)) on oil and other contents of jojoba plants. Results: Results showed that all treatments improved the vegetative growth, yield, and seed quality. Concerning oil, weight of 100 seeds and oil percent in seeds with treatment NPB2 under clone S-700 gave the highest value for all study parameters. Conclusions: Therefore, for improving yield and seed quality, it could be recommended with foliar spray NPB2 (N1.5%, P 1.25%, and B0.8%) under the condition of this study on jojoba plants.
Aims:The aim was to study the interaction and effect of gibberellic acid (200 ppm) between indole acetic acid (100 ppm) in order to follow their effect on the productivity of 5 lentil varieties
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