STUDIES ON SEED INVIGORATION TECHNIQUES AND MICRONUTRIENT SPRAY ON SEED YIELD AND QUALITY IN GREENGRAM (Vigna radiata L.)
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Date
2022-05-03
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University of Agricultural Sciences, Bangalore
Abstract
Field and laboratory studies were conducted to study the influence of micro and macronutrients on seed quality and packaging materials, seed treatment chemicals, solarisation on seed storability in greengram at NSP, UAS, Bangalore during 2020-21.
Seed invigoration with 1 % ZnSO4 in summer season recorded the highest in field emergence (96.6 %), plant height 60 DAS (32.7 cm), number of nodules per plant (40.3) number of pods per plant (16.9), seed yield per plot (273 g), seed yield per ha (4.3 q), seed
recovery (97.7 %), seed germination (95.7 %) and 100 seed weight (4.21 g). Effect of foliar application of ferrous sulphate (0.5%) in KKM-3 recorded the highest in plant height at 60 DAS (32.73 cm), number of nodules (35.4), seed yield per plot (285.6 g), seed yield per ha (4.53 q). Seed germination (97.3 %) was highest in WGG-42 and seed recovery (97.0 %) and protein (25.48 %) in TRCRM-147. WGG-42 ecorded significantly less number of hard seeds (16.2 %) compared to KKM-3 (18.5 %) and TRCRM-147 (19.9 %) after imposing treatments. Among treatments, Conc. Sulphuric acid for 2 min recordedhighest seed germination of three varieties (95.3 %, 97.3 % and 95.3) compared to control (36.3 %, 32.0 % and 29.0 %) respectively, also in other seed quality parameters. Seeds stored in super grain bag with spinetoram (0.4 ml/kg seed) treatment recorded lowest in seed moisture content (8.12 %) and seed infestation (1.67 %) and highest in seed germination (87.0 %) were recorded seeds treated with Chlorantraniliprole (0.10 ml/kg) compared to control (67.3 %) during ten months. Fresh seeds exposed to four hours of
solarisation for three days was significantly better in number of eggs (192.3), number of adults (37.0), seed germination (79.6 %) compared to control (237.3, 62.6, 63.0 % respectively) during nine months.