Physiological Studies on Sugar Pea: Effect of Plant Density and Some Natural Substances as Foliar Applications on Growth, Pod Yield and Quality.

Abstract

Two field experiments were conducted at Private Farm in EL-Salheya, SharKia Governorate, Egypt during winter seasons of 2012/2013 and 2013/2014 to study the effect of plant density and some foliar applications, i.e., moringa leaf extract (MLE), chitosan at 150 ppm and silicon at 200 ppm on vegetative growth, pod yield and quality of snow pea cultivars, i.e. "Compados and Snow Wind" and sugar snap pea cultivar "Sugar Snap". The results showed that Compados cultivar had more leaves and branches, longest plant height, heaviest fresh and dry weight, largest leaf area, and gave the highest pod length and pod yield (ton/fed.) compared with other cultivars in the two seasons. Whereas, the least one was Sugar Snap cultivar in both seasons. Moreover, Sugar Snap cultivar was the highest in pod thickness, total soluble solids (TSS) and carbohydrates (%) and the lowest in titrable acidity (%) in both seasons. While, Snow Wind was the superior in vitamin C (mg/100g fw) in both seasons. Meanwhile, plant density (20 cm apart) gave the highest plants and total pod yield/fed. compare with other densities (40 and 60 cm) at the two seasons whereas, (60 cm apart) gave the highest values in all studied parameters except plant height and total pod yield/fed followed by (40 cm apart plants) in both seasons. All foliar applications significantly increased all the studied parameters compared to the control treatment. The superior application was moringa leaf extract (MLE) followed by chitosan and silicon in both seasons, respectively. From the obtained results it could be concluded that Compados cultivar was the highest pod yield/plant, and total yield/fed. when cultivated on 20 cm apart, meanwhile Sugar Snap cultivar gave the best pod quality when cultivated on 60 cm apart and sprayed with moringa leaf extract three times, i.e., 15 days after planting then repeated each 15 days interval, respectively.

Optimization of Cowpea Productivity and Seed Quality under Soil Natural Salinity Stress Using some Different Protective Treatments تحسين انتاجية وجودة بذور اللوبيا تحت إجهاد ملوحة التربة الطبيعية باستخدام بعض المعالجات المختلفة

“…Data revealed that chitosan or yeast extract ranked the most foliar application under natural soil salinity that produced the highest quality of seeds either by its maximum average of germinative and vegetative indices. That result was accordance with the importance of chitosan in improving the germination of seeds, vegetative and yield characters which optimize the character of seeds to be more resistant to stress and increase the availability of amino compounds (Chibu and Shibayama, 2001), uptake of water and essential nutrients (Guan et al, 2009), in addition of increase the accumulation of photosynthesis output compounds, total protein, total carbohydrates N, P and K in seeds (El-Sayed et al, 2014;Behboudi et al, 2018).…”

Effect of Foliar Spray With Some Natural Plant Extracts on Earliness, Productivity and Quality of Globe Artichoke

“…Furthermore, Azra, (2011) and EL-Sayed et al (2014) found that spraying wheat, peas and tomato with M. oleifera extract increased all growth parameters, productivity and crop characteristics.…”