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Indian Journal of Agronomy
Year : 2007, Volume : 52, Issue : 2
First page : ( 139) Last page : ( 142)
Print ISSN : 0537-197X.

Effect of nutrient and weed management on forage sorghum (Sorghum bicolor) under rainfed condition

Rao S.S.*, Regar P.L., Jangid B.L., Singh Y.V.

Regional Research Station, Central Arid Zone Research Institute, Pali-Marwar, Rajasthan 306 401.

*Corresponding author: (E-mail: raoss61@yahoo.co.in)

Received:  February,  2007.

Abstract

A field experiment was conducted during 2000–01 to 2003–04 at Pali-Marwar, Rajasthan to study the effect of nutrient and weed management on yield of forage sorghum [Sorghum bicolor (L.) Moench] under rainfed condition. The experiment was laid out in split-plot design with 3 replications. Application of 5 t FYM/ha + 50% recommended dose of fertilizer 30 kg N and 8.75 kg P/ha significantly increased green and dry fodder yields of sorghum by 35.1 and 35.7% over the control. This treatment also caused highest uptake of N and P by sorghum. The effect of FYM treated plots on water-use efficiency was significantly higher over the control. Pre-emergence application of atrazine @ 0.5 kg/ha + 1 hoeing or interculture with peg tooth-weeder at 35 days after sowing, being on a par among themselves, caused least weed population and weed dry weight and significantly increased green and dry fodder yields of sorghum by 66–67%. Application of 5 t FYM/ha + 50% recommended dose of fertilizer resulted in the highest mean net return over the control. Pre-emergence application of atrazine alone or atrazine + interculture with peg tooth-weeder at 35 days after sowing gave high net returns and benefit: cost ratio.

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Keywords

Arid fringes, Atrazine, Dry-fodder yield, Inorganic, Organic, Sorghum.

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