Vol. 12, Issue 11 (2023)

Author(s):
Ram Prakash, Rajaneesh Singh, Virendra Kumar and Shivam Kumar Singh

Abstract:
A field experiment was conducted during two consecutive years 2019-20 and 2020-21 in rabi season at Agriculture Research Farm, Veer Bahadur Singh Purvanchal University, Jaunpur (U.P) to study the effect of plant growth regulators on growth and quality of onion (Allium cepa L.). The trial was laid down in randomized block design (RBD) with three replications and ten treatments viz. T₁- Control- Distilled Water, T₂. GA3- 50 ppm, T₃. GA3- 100 ppm, T₄. GA3- 150 ppm, T₅- NAA – 50 ppm, T₆- NAA- 100 ppm, T₇- NAA – 150 ppm, T₈- Kinetin- 50 ppm, T₉- Kinetin- 100 ppm, T₁₀- 150 ppm. Study results revealed that, there was significant statistical variation in plant height (cm), Number of leaves per plant, collor width (cm) Fourth leaf length (cm) and fourth leaf width (cm), leaf area index, Chlorophyll value, TSS, and Sulphur content. Maximum plant height (29.60 and 31.10 cm at 30 DAT, 46.90 and 48.10 cm at 60 DAT and 66.20 and 66.90 cm at 90 DAT), Number of leaves per plant (5.00 and 5.20 at 30 DAT and, 8.00 and 7.90 at 60 DAT and 12.00 and 12.30 at 90DAT), Fourth leaf length (22.50 and 22.90 cm at 30 DAT, 42.10 and 43.70 at 60 DAT and 46.50 and 47.50 cm at 90 DAT) and fourth leaf length width (0.47 and 0.47 cm at 30 DAT, 1.20 and 1.22cm at 60 DAT 1.52 and 1.56 90 DAT), collor width (1.15 and 1.15 cm)leaf area index (0.52 and 0.61 at 30 DAT, 3.10 and 3.01 at 60 DAT and 4.66 and 5.31 at 90 DAT), Chlorophyll value(0.52 and 0.61at 30 DAT and 3.01 and 3.01 DAT and 4.66 and 5.31 at 90 DAT, TSS (15.50 and 15.22) in T7, and Sulphur content (0.991 and 0.922).