تأثير مواعيد الزراعة والرش بحامض السالسليك في نمو وحاصل الماش(Vigna radita L.) رسالة مقدمة الـى

Effect of Planting Dates and Spraying With Salicylic Acid on Growth and Yield of Mung Bean )Vigna radita L.)

A field experiment was carried out during the summer season of 2021 in the field of the Department of Field Crops in Ibn Al-Bitar School in Al-Hussainiya – Holy Karbala Governorate in order to know the best date for planting the Mung bean crop, and to determine the best concentration of salicylic acid suitable for the crop in resisting the stresses it is exposed to for the purpose of Improving the vegetative, yield and qualitative characteristics, and their relationship in the growth of the Mung bean crop; The experiment was carried out according to Randomized Complete Block Design in the order of the split plots with three replicates and two factors: the first factor, which represents the main plots; includes four dates for their cultivation, namely: 3/15, 4/1, 4/15 and 5/1, while the second factor, which represents sub plots; It includes four spray concentrations of salicylic acid: 0, 50, 100 and 150 mg L-1 during the flowering period for each planting date. The data were analyzed according to the (Genstat) program, then the averages were compared according to the least significant difference (L.S.D) at a probability level of 0.05, The results showed a significant effect between planting dates; As the first date had a significant effect on most growth traits such as chlorophyll index, pod number, number of seeds in pod, leaf area of the plant and its index, total seed yield and some qualitative characteristics such as nitrogen percentage and protein percentage in seeds, while the second date 1/4 had a significant effect on Pod length, 1000-seed weight and phosphorous, while the fourth date 1/5 had a significant effect on some traits such as plant height, biological yield and carbohydrate content. While the results of salicylic acid spray concentrations showed significant effects, the concentration of 50 mg L-1 was significantly affected in two characteristics, nitrogen percentage and protein content of seeds, while the concentration of 100 mg L-1 had a significant effect on 1000 seeds only, while the concentration of 150 mg L-1 had an effect in some traits such as plant height, pod number, total yield, biological yield, and carbohydrate content in seeds. As for the interaction, it significantly affected most of the studied traits, except for chlorophyll index, leaf area and index, number of branches, pod length, harvest index recipe, potassium percentage in and content of chlorophyll. Carbohydrates in seeds.