Indian Journal of Agronomy
Year : 2001, Volume : 46, Issue : 1
First page : ( 186) Last page : ( 189)
Print ISSN : 0537-197X. Online ISSN : 0974-4460.

Response of amaranth (Amaranthus hypochondriacus) to levels and time of nitrogen application

Arya M.P.S.1, SINGH R.V.

Hill Campus, Govind Ballabh Pant University of Agriculture and Technology Ranichauri, Tehri Garhwal, Uttranchal, 249199

¹ Present address: National Research Centre for Women in Agriculture, 1999, Jagamara, Bhubaneshwar, Orissa 751030

Received:  January,  1999.

Abstract

A field experiment was conducted during the rainy season (kharif) of 1996 and 1997 to find out the optimum dose of nitrogen and an appropriate time of its application to amaranth (Amaranthus hypochondriacus L.) at Ranichauri. The grain yield was significantly increased up to 80 kg N/ha. The optimum and maximum yield doses estimated through quadratic response were found to be 91.89 and 105.60 kg/N/ha respectively. The benefit: cost ratio was negative beyond 101 kg N/ha. Plant height and grain weight/plant were also increased up to 80 kg N/ha. The harvest index was, however, highest with 40.0 kg N/ha. Plant stand at harvest and test weight remained unaffected. Nitrogen application in 2 splits, i.e. half at sowing and half 50 days after sowing also significantly increased the grain yield and plant height over single and 3 splits.

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Keywords

Amaranth, Nitrogen, Split application.

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