Dr. RAZIA SULTANAK. ASHA JYOTHI2024-09-122024-09-122016-01-18https://krishikosh.egranth.ac.in/handle/1/5810214405Studies on “Influence of planting methods and nutrient application on seed yield and storability of soybean [Glycine max (L.) Merrill]” was conducted at College of Agriculture, Rajendranagar, PJTSAU, Hyderabad during 2014-2015 to explore the seed production potential and soybean seed quality during storage period. Experiment was carried out by taking two planting methods (Ridge- Furrow and Flat bed methods) as main treatments and eight combination of nutrient doses (RDF, RDF+Zn, RDF+Mo, RDF+Zn+Mo, 1.5 RDF, 1.5 RDF+ Zn, 1.5 RDF+Mo and 1.5 RDF+ Zn+Mo) as sub treatments in split plot design replicated thrice. Planting methods and nutrient application exhibited significant influence on the crop growth parameters, seed yield and seed quality parameters. Among the planting methods, ridge and furrow method of planting had significant influence on growth and yield parameters over flat bed method. Among different nutrient levels, 1.5 RDF + Zn +Mo had significantly affected crop growth, seed yield and seed quality parameters. Interaction effects indicated that ridge method of planting with application of molybdenum along with 1.5 RDF has resulted in maximum leaf area index (3.48), dry matter (17.51gm-2), highest number of pods (49.57), 100 seed weight (10.90 g) and seed yield (2100 kg ha-1). Seed quality parameters were not differed significantly with different planting methods. However, nutrient levels has shown significant influence on germination percentage, speed of germination, mean germination time, seedling length, seedling dry weight, seed vigour indices, electrical conductivity, dehydrogenase, peroxidase and superoxide dismutase enzyme activities. Application of 1.5 RDF+ Mo+ Zn has resulted in high germination percentage (98.39 %), seedling length (31.62 cm), seedling dry weight (0.88 g), seedling vigour index- I and II (3224 and 82.63 respectively), less mean germination time (3.29 days), speed of germination (30.14), higher dehydrogenase (0.635) and peroxidase (0.502) activities with higher superoxide dismutase (1.226) activity and lower EC value (0.840 dSm-1). It also resulted in higher nutrient contents in seed N(6.78%), P (0.77%), K(1.94%), S(0.39%), B (24.80 ppm), Zn (21.96 ppm) and Mo (3.48 ppm). Studies on storage potential of soybean seed indicated significant influence of storage period on the seed quality parameters. Planting methods did not show any significant influence on quality parameters studied during storage. However, application of various nutrient levelsexhibited significant differences among the treatments for all the seed quality parameters studied. The interaction effects between planting methods and nutrition doses were also found to be non significant. Decline in germination percentage and corresponding vigour index was noticed over a period of six months of storage in all the treatments. Ridge method of planting with application of zinc and molybdenum together along with 1.5 RDF has recorded higher germination percentage (89.37%), seedling length (24 cm), seedling dry weight (0.50 g), vigour index-I and II (2066 and 43.58 respectively) and high speed of germination (24.53), high dehydrogenase activity (0.162), high peroxidase activity (0.274) and with high superoxide dismutase activity (1.74) with low EC values (1.234 dSm-1) at the end of storage period indicating better storability and protection from lipid peroxidation and seed deterioration. The present results indicated that among the germination, seedling and vigour traits studied seedling vigour index-I, speed of germination, seedling length and germination were more sensitive seed quality parameters affected by ageing during storage under ambient conditions. From the results of the present study, it could be concluded that planting methods and nutrient applicationhas significant influence on field performance of soybean crop. Nutrient application had significant influence on initial seed quality parameters and also during storage period. Ridge and furrow method of planting with 1.5 RDF+ Zn+ Mo helps in good field performance with recovery of higher seed yield and better seed quality.EnglishThesis