Effect of Organic and Inorganic Plant Growth Promoters on Yield Attribute, Yield and Economics of Wheat (Triticum aestivum L.) Varieties

Abstract

The field experiment was carried out during Rabi season of 2021-22 at “Students’ Instructional Farm” of Chandra Shekhar Azad University of Agriculture and Technology, Kanpur. The experiment included two factors, viz. timely shown wheat varieties, V1-DBW-187, V2-K-1006, and V3-K-607 in main-plot and plant growth promoters (PGPs), G0- Control, G1- Nitrobenzene @ 3ml l-1, G2-Gibberellic acid @ 2000 ppm, G3-Seaweed extract solid @ 25 kg ha-1, G4-Seaweed extract liquid @ 625 ml ha-1, G5-Micronutrients (Zn, Fe, B, Cu) @ 0.5% were selected in sub-plots. The overall 18 treatment combinations were accommodated in Split Plot Design and replicated thrice. The results of this study showed significant increases in yield attributes, yield and economics, viz. no. of ears m-2 (426.29, 417.63), length of ear (10.97, 10.53 cm), no. of grains ear-1 (69.55, 69.81), test weight (40.67, 39.66 g), grain yield (4764.67, 4402.33 kg ha-1) and gross income (INR. 141547.00, 131446.90), net income (INR. 96773.00, 86672.74) and B: C ratio (3.14, 2.93) in wheat varieties DBW-187, K-1006 respectively as compared to variety K-607. Among plant growth promoters, G6-mixture of micronutrients (Zn, Fe, Cu, B) @ 0.5% foliar spray at tillering stage, resulted significant increments in yield attributes, yield and economics, viz. no. of ears m-2 (445.43), length of ear (11.96 cm), no. of grains ear-1 (73.67), test weight (41.87g), grain yield (4813.67 kg ha-1), gross income (INR. 139707.40), net income (INR. 94263.00) and B: C ratio (3.06) as compared to control treatment. G3-Gibberellic acid @ 2000 ppm and G5-Seaweed extract liquid @ 625 ml ha-1 show significant result also. The maximum No. of ears m-2, Length of ear, No. of grains ear-1, Test weight, grain yield, gross income, net income and B: C ratio was recorded under the variety DBW-187 and mixture nutrients (Zn Fe, Cu, and B).