Effect of Compost Rates and Spraying with some Biostimulant Substances on Growth, Yield and Quality of Snap Bean

Abstract

Two field experiments were conducted at the private field in El-Zarka City, Damietta Governorate, Egypt, during 2016 and 2017 seasons to evaluate the effects of organic fertilization rates (compost rates) and foliar spraying by some biostimulant substances on yield and its components,growth as well as quality of snap bean (Contender cultivar). A split-plot with three replicates was the experimental design. The vertical-plots to three compost rates i.e. without compost (control treatment), 50 % of the recommended dose (2 tons compost/fed) and 100 % of the recommended dose (4 tons compost/fed).The horizontal plots were devoted to four treatments of foliar spraying with some biostimulant substances i.e. foliar spraying with brassinolid at the rate of 10 ppm, moringa extract at the rate of 200 ppm, chitosan at the rate of 200 ppm and tap water (control treatment). The most important results can be summarized as follows: The highest values of vegetative growth characters, pod yield and its components as well as quality of snap bean pods were resulted from fertilizing with (4 tons compost/fed) 100 % .On the contrary, the lowest values of growth characters, pod yield and its components and chemical composition of snap bean pods were obtained from plants not treated with compost (control treatment). Foliar spraying snap bean plants three times with 200 ppm chitosan exceeded all foliar spraying with some biostimulant substances and resulted the highest values of vegetative growth characters, pod yield and its components as well as quality of snap bean pods. Followed by foliar spraying with brassinolid at the rate of 10 ppm and then moringa extract at the rate of 200 ppm. Whereas, the lowest values of vegetative growth characters, pod yield and its components as well as quality of snap bean pods were resulted with control treatment (spraying with tap water).It can be concluded that organic fertilizing with 4 tons compost/fed and foliar spraying three times with chitosan at the rate of 200 ppm folloued by spraying with brassinolid 10 ppm in order to obtain high yield and its components,growth as well as quality of snap bean (Contender cultivar).

Effect of Some Safety Growth Stimulants and Zinc Treatments on Growth, Seeds Yield, Chemical Constituents, Oil Productivity and Fixed Oil Constituents of Chia (Salvia Hispanica L.) Plant

“…chemical composition are in parallel with those obtained Ibrahim and Helaly (2017) illustrated that, the better, chemical constituents of seeds and as well as trigonelline content in seeds could be obtained by spraying humic acid at 2 l/feddan level on fertilized fenugreek plants with NK at 75% of recommended rate. While increases chlorophyll levels as a result of chitosan application are in agreement with findings of Malekpoor et al (2016) Afifi et al (2018) concluded that chitosan at the rate of 200 ppm gave high growth, yield and its components as well quality of snap bean.…”

Some Agronomical Practices for Improving Growth ,Yield and Quality of Pea Growing at Late Seasons. بعض الممارسات الزراعیة لتحسین النمو والمحصول والجودة للبسلة المنزرعة فی العروات المتأخرة

“…Concerning the effect of foliar treatments (brassinolide, growth regulators, yeast, KNO3 and K2SIO3) and vernalization practice on vegetative growth, our results similar that obtained by Afifi et al (2018)…”