Effect of sources of phosphorus and microbial inoculation on productivity, nutrient availability in soil and uptake of nutrients by chickpea (Cicer arietinum) grown on sandy loam soil
2011
SINGH, Y P | SHARMA, ANBHUTI
A field experiment was conducted for two consecutive, winter (rabi) seasons of 2004–05 and 2005–06 to study the response to different sources of phosphorus, viz. fertilizer (DAP), P-enriched organic manures (vermicompost and compost), and Rhizobium and phosphorus-solubilizing microorganisms (PSM) inoculation on growth, yield, crude protein content, uptake of nutrients by chickpea and availability of N, P, K and S at harvest in sandy loam soil of old alluvial plains of Rajasthan. The results revealed that the application of P through organic manures (P-enriched vermicompost and compost) and fertilizer alone or in combination with Rhizobium and PSM inoculation significantly improved the growth, yield, crude protein content, N, P, K and S uptake by chickpea. Maximum grain (2 639 kg/ha) and stover yield (2 978 kg/ha) of chickpea was recorded with addition of recommended dose of P through P-enriched vermicompost along with Rhizobium and PSM inoculation, followed by 2 575 kg grain/ha and 2 916 kg stover/ha yields with recommended dose of P through P-enriched vermicompost and Rhizobium inoculation. Available N and P after harvest of chickpea crop was significantly higher with the application only or combination of organic manure and fertilizer sources of P, Rhizobium and PSM inoculation over control. Maximum gain was 97 kg available N/ha and 0.69 kg available P/ha over initial (152 kg/ha available N and 9.73 kg/ha available P) with application of P through P-enriched vermicompost along with Rhizobium and PSM inoculation. Available S in soil significantly decreased with application of P through fertilizer and increased with application of P through organic manures as compared to control.
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