Effect of spacing, sources of nutrient and methods of zinc application on yield and yield attributes of summer greengram (Vigna radiata L.)

A field experiment was conducted during Zaid season of 2015-16 at Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, SHUATS, Allahabad. The experiment consisted of two different spacings (30 cm × 10 cm and 45cm × 6.7 cm), three sources of nutrient (100% Organic, 50% Organic + 50% Inorganic and 100% Inorganic on the basis of N & K) and three methods of Zn application (No application, Soil application at 12.5 kg ZnSO₄ ha-1 and foliar spray at 0.5% ZnSO₄) which was laid out in Factorial Randomised Block Design (FRBD) with three replications. Thus, there were in all 18 treatment combinations. From the present investigation it can be concluded that for obtaining higher yield greengram is to be grown during zaid season with the spacing of 30 cm × 10 cm along with nutrient sources 50% Organic (1.50 tonne Farm yard manure ha-1 + 83.35 kg Bone meal ha-1) + 50% Inorganic (55.56 kg Diammonium phosphate ha-1 +12.50 kg Muriate of potash ha-1) and Soil application of Zn at 12.5 kg ZnSO₄ ha-1.