Effect of Integrated Nutrient Management on Yield, Economics and Soil Fertility in Rice–Mustard Cropping System in Chhattisgarh Plain Agro-Climatic Zone
DOI:
https://doi.org/10.59797/ija.v70i2.5864Abstract
The present investigation was carried out during 2018–19 to 2019–20 at farmer’s field under Farmer FIRST Project (FFP), JNKVV – College of Agriculture, Balaghat, Madhya Pradesh, to find out the effect of integrated nutrient management on yields, soil fertility status and economics of rice – mustard cropping system. The experiment comprised for five treatments in a randomized block design with four replications. The details of the treatments were T1 = Farmer Practice (as Control), T2 = 100% NPK, T3 = 100% NPK + Zn, T4 = 75% NPK+ 5t FYM ha-1 and T5 = 75% NPK + 5t FYM ha-1 + Biofertilizers (BGA/Azotobactor & PSB). The results of present study revealed that the application of 75% NPK + 5t/ha FYM + biofertilizers (BGA/Azotobactor & PSB) produced significantly higher grain yield of rice and mustard (4620 kg/ha and 1248 kg/ha, respectively) over the Farmer Practice (3795 kg/ha and 970 kg/ha, respectively). The maximum nutrients (N, P & K) uptake by rice and mustard crops were recorded in 75% NPK + 5t/ha FYM + biofertilizers treatment. The integration of inorganic fertilizers along with organic manure and biofertilizers exhibited the highest soil nutrients availability N, P, K, S and Zn at post-harvest of mustard crop as compared to other treatment combinations. Further, results revealed that the highest cost of cultivation (₹ 57080/ha) and net returns (₹ 111994/ha) were noted in 75% NPK + 5t/ha FYM + biofertilizers treatments. The benefit cost ratio computed for rice – mustard cropping system suggested that the higher B:C ratio is associated with higher production and better quality of the produce. Thus, the integrated application of fertilizer with farmyard manure and biofertilizers increased the crop yields of rice-mustard cropping system and sustaining the soil fertility status in Vertisol.
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