Effect of integrated nutrient management on growth, yield and yield attributes of soybean under rainfed situations of Madhya Pradesh

Abstract

Soybean, being an important pulse as well as oilseed crop, needs special mention to overcome crisis in edible oil production in the country. It is also called as “Gold of Soil”. The productivity of soybean can be increased by inoculation with bio-agents such as Rhizobium and phosphate solubilizing micro-organisms. In recent years, a concept of integrated nutrient supply involving use of organic manures and inorganic fertilizers has been developed to obtain sustained agricultural production. Keeping the above points in view the present experiment was carried out for two years in 2016 and 2017. A field experiment was carried out at research farm, Deptt. of soil science & Agricultural chemistry, JNKVV, Jabalpur (M.P.) during Kharif seasons. The experiment consisted of eleven treatment combinations (T1- FYM 6 t ha-1 Enriched with PSB & Rhizobium, T2- FYM 4 t ha-1 Enriched with PSB & Rhizobium + Remaining of RDF through chemical fertilizer, T3- FYM 2 t ha-1 Enriched with PSB & Rhizobium + Remaining of RDF through chemical fertilizer, T4- Vermicompost 2 t ha-1 Enriched with PSB & Rhizobium, T5- Vermicompost 1.5 t ha-1 Enriched with PSB & Rhizobium+ Remaining of RDF through chemical fertilizer, T6- Vermicompost 1.0 t ha-1 Enriched with PSB & Rhizobium + Remaining of RDF through chemical fertilizer,T7-Poultry Manure 2 t ha-1, T8-Poultry Manure 1.5 t ha-1+ Remaining of RDF through chemical fertilizer,T9- Poultry Manure 1.0 t ha-1+ Remaining of RDF through chemical fertilizer,T10-100% of RDF NPK (25:60:40 kg NPK ha-1) and T11 Absolute control. Amongst the INM treatments, T5 (Vermicompost 1.5 t ha-1 Enriched with PSB & Rhizobium+ Remaining of RDF through chemical fertilizer) resulted in higher grain and straw yield, the plant height,at harvest stage ranged from 43.3 cm in control treatment to 63.4 cm in T5 treatment. Similarly number of branches range from 5.73 plant-1 in control treatment to 6.63 plant-1 in T5 treatment and yield attributes characteristics viz. number of pods plant-1, number of grain pod-1and test weight higher in T5 (Vermicompost 1.5 t ha-1 Enriched with PSB & Rhizobium + RRDFCF) treatment.