Effect of nutrient management and plant geometry on different maturity group varieties of soybean

The field investigation entitled “effect of nutrient management and plant geometry on different maturity group varieties of soybean” was conducted at Regional Research Centre, Amravati under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during kharif 2017-18 to 2019-20. The experiment was laid out in a split plot design (Main plot (A): Spacing, S₁: 45 x 05, S₂:30x10 cm, (B) Varieties V₁:JS-9560 (Extra early 80-85 days, V₂:JS-9305 (Early 90-95 days) and V₃: JS-9752 (Medium 98-102 days), Sub plot: Nutrient Schedule N₁ 50% RDF, N₂:75% RDF, N₃: 100% RDF (30:75:30 NPK/ha) N₄: 125% RDF) with three replications with a view to find out effect of nutrient management and plant geometry on different maturity group varieties of soybean and economics of the treatments. From, pooled data over the three years revealed that, spacing showed non significant effect. In varietal comparison, variety JS- 9752 (V₃) yielded significantly superior (1890 kg ha^-1) as compare to variety JS-9560 (1730 kg ha^-1) and JS-9305 (1792 kg ha^-1). In case of straw yield variety JS-9752 (2433 kg ha^-1) recorded significantly superior straw yield over JS-9560 (2165 kg ha^-1) and JS-9305 (2295 kg ha^-1). Variety JS-9752 showed significantly higher Gross monetary returns and B:C ratio as compare to other varieties but at par with variety JS-9305 in case of net monetary returns. Nutrient management treatment N₃ (100% RDF) recorded significantly higher seed yield i.e.1976 kg ha^-1 over the treatment N₁ and N₂ but at par with N₄ (1903 kg ha^-1). Significantly highest straw yield was recorded in treatment 100% RDF (2615 kg ha^-1) as compare to treatments N₁, N₂ and N₃. Nutrient management treatment N₃ (100% RDF) showed significantly higher gross monetary return (65295 Rs ha^-1), net monetary return (35584 Rs ha^-1) and B:C ratio (2.19) as compare to rest of the nutrient management treatments but at par with treatment N₄ i.e. 125% RDF in case of GMR. Treatment combination of S₁xV₃ (spacing 45 X 05 cm with variety JS-9752) showed significantly higher seed yield (1984 kg ha^-1), straw yield (2554 kg ha^-1), GMR (65608 Rs ha^-1) and NMR (36825 Rs ha^-1) over rest of the treatment combinations. Variety JS-9752 and nutrient management 100% RDF recorded significantly highest seed yield (2081 kg ha^-1), straw yield (2746 kg ha^-1) GMR (68711Rs ha^-1) and NMR (38081Rs ha^-1) over all other treatment combinations but at par with treatment combinations V₂xN₃ and V₃xN₄. Treatment combination of V₃ x N₃ was at par with V₁ x N₃ in respect of NMR in pooled data. Treatment combination S₁- (45 x 05 cm) x V₃ (JS-9752) x N₃ (100% RDF (30:75:30 NPK/ha) recorded significantly highest seed yield (2174 kg ha^-1), straw yield (2891 kg ha^-1), GMR (71775 Rs ha^-1) and NMR (41146 Rs ha^-1) as compare to rest of all treatment combinations except treatment combination of S₁xV₃xN₄, S₂xV₃xN₃ and S₂xV₃xN₄ but treatment combination S₁xV₃xN₃ was also found at par with S₂xV₂xN₃, S₂xV₂xN₄ in respect of seed yield, S₂xV₂xN₃ in respect of GMR and S₁xV₂xN₃, S₂xV₂xN₃ in respect of NMR in pooled results respectively.