Comparison of STCR approach with general recommendation of fertilizer method in maize (Zea mays L.)- mustard (Brassica juncea L.) crop rotation grown on mollisol of tarai region of Uttarakhand
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Date
2021-11
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
A field experiment was conducted during 2020-21 at D7 Block of Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar. The experiment consisted of two trials, viz. hybrid maize var. (P3401) grown in kharif season in the year 2020 and hybrid mustard var. (PR20) grown in rabi season in the year 2020-21. The experimental site was divided into 7 treatments and 3 replications, for a total of 21 plots in randomized block design (RBD).The treatments comprised of control, farmer practices, general recommended dose, targeted yield with varying levels of nitrogen, phosphorus, potassium and in few treatments farm yield manure (FYM).The aim of this experiment was to compare the STCR approach with general recommendation of fertilizer method in maize-mustard crop rotation. Response of maize and mustard crop to both the approaches were compared as soil fertility status, yield, nutrient uptake and economic impact. The experiment revealed that the chemical properties viz. pH, EC, organic carbon, available nitrogen, phosphorus and potassium was significantly affected due to fertilizers and FYM application and recorded maximum in treatment T7 i.e., target yield + 5t ha-1 FYM in both crops. The nutrient uptake and yield were also found significantly higher in T7 as compared to general recommendation dose (GRD) and control. The cost of cultivation and gross return were maximum in treatment T7 in both maize and mustard crop. But the net return was maximum in treatment T5 in both the crops. The benefit cost ratio in maize crop was highest in treatment T5 i.e., target yield 2 (50 q ha-1) which was 5.27, while in case of mustard crop, the highest benefit cost ratio 3.88 was recorded in treatment T4 i.e., target yield 1 (15 q ha-1). From this experiment it has been concluded that integrated use of NPK fertilizer with FYM based on STCR approach not only gave higher maize and mustard yield but also improve and sustain the soil fertility. But from the economic point of view the treatment with inorganic fertilizers alone perform better.