Productivity enhancement of soybean as influenced by integerated nutrient and other agronomic interventions in sub - humid Punjab, India

Abstract

A field experiment was conducted for three years under irrigated conditions for productivity enhancement of soybean through integrated nutrient and other agronomic interventions. Application of N, P, K and FYM significantly enhanced the yield of soybean over control. Maximum yield was observed in the treatment where FYM was applied with NPK and resulted in an increase of 15.1 per cent over NPK alone. Application of additional 30 kg N ha -1 at pre-flowering or at pod initiation did not significantly enhance the yield over the basal dose of NP applied at sowing. Application of 4 tonnes wheat straw mulch + 30 kg N +60 kg P 2 O 5 and 30 kg N + 60 kg P 2 O 5 ha -1 showed similar effect on seed yield of soybean. No statistical difference in soybean yield was obtained in the conventional flat and bed sowing treatments. Pre-emergence application of pendimethaline @ 1.5 l ha -1 along with one hand weeding at 40 days after sowing (DAS) and two hand weeding at 20 and 40 DAS were equally effective for weed control and in influencing the soybean yield. The application of N, P, K, FYM, in different treatments, treatment with Bradyrhizobium japonicum and sowing on beds all significantly improved the N, P and K uptake by soybean over control. Application of FYM to soybean resulted in maximum enhancement of nutrient uptake by soybean. After three years a significant improvement in soil OC, available N, P and K was observed in all treatments over control.

Effect of integrated nutrient and agronomic management on growth, productivity, nutrient uptake and soil residual fertility status of soybean

“…Application of 10 tonnes of FYM along with 30 kg N, 60 kg P 2 O 5 and 30 kg K 2 O ha -1 recorded the highest seed yield. These results are corroborated by the findings of Sikka et al (2013) and Arbad et al (2014). The increase in yield over the control (T 1 ) was significant under all the treatments except T 2 where the increase was non-significant.…”

Impact of different ratios and levels of nitrogen and phosphorus on growth, yield and nutrient uptake of rainfed soybean

“…These results are in conformity with the findings of Lone et al (2009) where in N/P fertilizer ratio of 0.66 produced higher numbers of nodules in soybean. These results are in close accordance with Shivakumar and Ahalwat (2008) and Sikka et al (2013). Inoculation of rhizobium with optimum fertilizer application provided favourable conditions for the multiplication of nodule bacteria which in turn produced more number of nodules and nodule dry weight.…”

Productivity Potential and Economic Feasibility of Pigeonpea + Blackgram Intercropping and Integrated Nutrient Management

“…Rhizobium might help in fast root nodulation and fixed more nitrogen in the roots of the plant and phosphate solubilising bacteria protect conversion of applied and native available phosphorus into unavailable forms and solubilise organic phosphorus to available forms which resulted in increasing availability of phosphorus for vital functions, resulting in improvement in growth, yield attributes and yield of pigeonpea. This result accordance with the Jat and Ahlawat (2003), Malik et al, (2013) and Sikka et al, (2016).…”