Productivity, nutrient balance and economics of kabuli chickpea (Cicer kabulium) as influenced by integrated nutrient management

Field experiments were conducted at Kota (Rajasthan) during winter seasons of 2005–06 and 2006–07 to evolve an integrated nutrient management strategy for kabuli chickpea. The experiment was laid out in randomized block design with 12-treatment combinations of levels of P (0, 12.9, 25.8 kg/ha), phosphate solubilising bacteria (control, PSB) and FYM (0, 5 tonne/ha) replicated 4 times. Conjunctive use of inorganic P @ 12.9 kg/ha + PSB + FYM had resulted in maximum number of pods/plant (102.6), bolder seeds (31.88 g) and higher seed yield (2.53 and 2.80 tonne/ha). It was in parity with 25.8 kg P/ha + PSB + FYM (2.42 and 2.96 tonne/ha) in 2005–06 and 200607, respectively. Harvest index and N uptake followed similar trend. The P uptake increased with the application of P upto 25.8 kg/ha but was on par with 12.9 kg P/ha + PSB + FYM. Integrated use of inorganic P with PSB and FYM also improved N and P status of soil. The maximum net returns were obtained with 12.9 kg P/ha + PSB + FYM (Rs 53,200/ha) during 2005–06 and with 25.8 kg P/ha + PSB + FYM (Rs 64,870/ha) during 2006–07. But highest B:C ratio was recorded under 12.9 kg P + PSB. Consequently for higher productivity, profitability and soil health kabuli chickpea should be fertilized with 12.9 kg P/ha in conjunction with 5 tonne/ha FYM and PSB inoculation.