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2009•Journal of Oilseeds ResearchRequires access

Nutrient requirements of kharif castor, Ricinus communis L. under irrigated conditions of Uttar Pradesh

S. K. Srivastava, Dinesh Chandra

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Abstract

Field experiment conducted at Kanpur (UP) during kharif 2006–07 and 2007–08 to find out the optimum fertilizer needs of castor under irrigated conditions, revealed that with increase in nitrogen dose, there was significant increase in seed yield upto 80 kg N/ha. Application of 30 kg phosphorus/ha was found optimum. The crop responded to potassium application in the year 2007–08 upto 30 kg K2O/ha. Application of 80 kg N/ha, 30 kg P2O5 and 30 kg K2O/ha gave maximum net returns and B:C ratio during both the years.

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What this paper is about

Field experiment conducted at Kanpur (UP) during kharif 2006–07 and 2007–08 to find out the optimum fertilizer needs of castor under irrigated conditions, revealed that with increase in nitrogen dose, there was significant increase in seed yield upto 80 kg N/ha. Application of 30 kg phosphorus/ha was found optimum. The crop responded to potassium application in the year 2007–08 upto 30 kg K2O/ha. Application of 80 kg N/ha, 30 kg P2O5 and 30 kg K2O/ha gave maximum net returns and B:C ratio during both the years.

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Available abstract

Field experiment conducted at Kanpur (UP) during kharif 2006–07 and 2007–08 to find out the optimum fertilizer needs of castor under irrigated conditions, revealed that with increase in nitrogen dose, there was significant increase in seed yield upto 80 kg N/ha. Application of 30 kg phosphorus/ha was found optimum. The crop responded to potassium application in the year 2007–08 upto 30 kg K2O/ha. Application of 80 kg N/ha, 30 kg P2O5 and 30 kg K2O/ha gave maximum net returns and B:C ratio during both the years.

Key concepts: Kharif crop, Ricinus, Uttar pradesh, Agronomy, Potash, Phosphorus, Biology, Nutrient

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