Studies on the effect of plant growth regulators and their application methods on growth, yield and quality attributes of potato (Solanum tuberosum L.) variety Kufri Pukhraj under agro-climatic conditions of Chhattisgarh plains

Abstract

The present investigation entitled “Studies on the effect of plant growth regulators and their application methods on growth, yield and quality attributes of Potato (Solanum tuberosum L.) variety Kufri Pukhraj under agro-climatic conditions of Chhattisgarh plains.” was performed at Research Cum Instructional Farm, College of Agriculture, IGKV, Raipur (C.G), during the Rabi season 2018-19 under ACRPT. The experiment was carried out with Factorial RBD with fourteen treatment combinations consisting of two methods of application S (Seed treatment) and F (Foliar Spray application) and seven levels of plant growth regulators viz., T1 (Plain water), T2 (GA3 -15 ppm), T3 (GA3-25 ppm), T4 (GA3- 50 ppm), T5 (IBA-100 ppm), T6 (IBA-200 ppm) and T7 (IBA-250 ppm) were replicated three times. The method of PGRs application significantly influenced on all growth, yield and quality parameters. The method of PGRs application non-significantly differentiate plant height, number of shoot and dry weight of shoot per plant, harvesting index, specific gravity. The interaction effect of these two components recorded significant lesser days for plant emergence under ST3 (19 days), higher plant emergence percentage under ST3 (95.11%), maximum height of plant at 90 DAP under ST4 (61.78), maximum number of shoot under FT2 (13.13), maximum number of tuber per plant under FT7 (8.30), grade wise maximum tuber yield found that Grade B (50-75 g) tuber yield with FT5 of 9.17 kg/plot (10.19 t/ha). However, maximum total tuber yield was recorded with ST4that is (29.43 t/ha).