Influence of Different Sources of Plant Nutrients on Soil Fertility, Nutrient Uptake and Productivity of Soybean under Vertisols

Abstract

A field experiment was conducted at College of Agriculture (RVSKVV), Indore during kharif 2013 to study the effect of different sources of plant nutrients on productivity, profitability nutrient uptake and soil fertility of soybean in relation to eight nutrient management treatments (T1: RDF- recommended dose of fertilizer (N:P:K:S @ 30:60:30:30 kg/ha), T2: RDF + Rhizobium + PSB (20 g/kg seed), T3: RDF + 50 kg ZnSO4/ha + Rhizobium + PSB, T4: RDF + 1 g (NH4)2MoO4/kg seed + Rhizobium + PSB, T5: RDF + 5 kg Borax/ha + Rhizobium + PSB, T6: RDF + 10 kg FeSO4/ha + Rhizobium + PSB, T7: RDF + 25 kg MnSO4/ha + Rhizobium + PSB and T8: RDF + FYM 5 t/ha + Rhizobium + PSB.). Highest seed yield (844 kg/ha) was obtained under T4, which was at par with T8. The maximum gross returns (`36,376/ha), net returns (`20,132/ha), B:C ratio (2.24), production efficiency (7.47 kg/ha/day) and economic efficiency (`178.16/ha) was also recorded under T4 treatment. Significantly higher nutrient uptake (52.50 and 22.79 kg N, 3.28 and 6.0 kg P, 17.84 and 24.79 kg K, 85.83 and 382.55 g Fe, 67.50 and 313.02 g Mn and 0.27 and 3.96 g Mo/ha by seed and stover, respectively) were obtained under T4. However, the highest uptake of Zn (41.39 and 40.55 g/ha by seed and stover, respectively) was recorded in T3 followed by T8. While the significantly higher uptake of B by seed and stover (24.17 and 40.80 g/ha) was recorded with the application of RDF + 5 kg Borax/ha + Rhizobium + PSB. Application of RDF + FYM 5 t/ha + Rhizobium + PSB (T8) significantly enhanced the available organic carbon (0.40%), N (174.0 kg/ha) and P2O5 (18.67 kg/ha) which was at par with T4. Higher Fe content in soil (4.81 mg/kg soil) was noted with T6, while maximum Mn (2.0 mg/kg soil) was found under T7. Maximum Zn content (0.56 mg/kg soil) was found with the application of T3, whereas, the maximum Mo content (0.048 mg/kg soil) was recorded in T4.

Bioactivation of Legacy Phosphorus in Calcareous Soil and its Impact on Maize Yield

“…The results revealed that the application of P with HA decreases the P-fixation and increases the water-soluble P availability to plants by making its soluble complexes and its uptake improves the storage of photosynthates in the plants. The addition of humic acid and FYM have direct as well as indirect effects on crop growth and yield, as they play an essential role in supplying and cycling nutrients in the soil and releasing the insoluble pool by its solubilising effect under the P-deficit conditions (Hussain et al, 2021;Kumawat et al, 2021). The FYM and humic acid, besides releasing their own nutrient, increases the nutrient use T 1 +PA 3 ( Phytase+HA)+SSP @ 50% recommended soil test dose FYM-Farmyard manure @ 12.5 t ha -1 , HA-Humic acid @ 3 kg ha -1 , Phytase @ 2 kg ha -1 and PSB-Phosphorus solubilising bacteria @ 2 kg ha -1 .…”

Efficiency of Factor Productivity and Effect of Individual Input of Production on Growth, Yield and Economics of Soybean [Glycine max (L.) Merrill] Production

“…Soybean mainly grown in the rainfed condition and it is important for the livelihood of small and marginal farmers. Soybean contributes 43 per cent to the total oilseeds and 25 per cent to the total oil production in India and ranks fourth in respect to production of soybean in the world (Tomar et al, 2018 andKumawat et al, 2021) In India, average productivity of soybean is low due to lack of seed treatment with bio fertilizers, lack of weed management due to unavailability of labour or continuous rain, lack of sufficient soil moisture due to long dry spells d urin g cro p grow th period , im b alan ced n utrition , improper pest and disease management etc., affect the seed yield and productivity of soybean (Jaybhay et al,2 01 8). In g en eral, to tal ann ual lo ss in ag ricu lture produces, weeds account for 45%, insect 30%, disease 20% and other pests 5% (Rani and Raju, 2020).…”