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Agricultural Engineering Today
Year : 2010, Volume : 34, Issue : 1
First page : ( 21) Last page : ( 24)
Print ISSN : 0970-2962. Online ISSN : 2230-7265.

Assessment of Yield Using Cono Weeder in SRI Method of Paddy Cultivation

Mohanty D K1, Mohanty M K2

1SMS (Agril. Engg.), KVK, Deogarh, E-mail – dmohanty11@yahoo.com

2College of Agricultural Engineering and Technology, OUAT, Bhubaneswar.

Abstract

An on farm trial was conducted at farmer's field during Kharif 2008 and Kharif 2009 at Niktimal and Bamparda village of Deogarh district of Odisha to study the effect of cono weeder on yield in SRI method of rice cultivation. The experiments replicated thrice were laid out in randomized block design. They were: i) weeding by cono weeder at 10 DAT, 20 DAT and 30 DAT (T1); ii) weeding by cono weeder at 10 DAT and 20 DAT (T2); iii) manual weeding at 10 DAT, 20 DAT and 35 DAT (T3); iv) manual weeding at 20 DAT and 35 DAT (T4), and v) No weeding or weed control by flooding water (T5). The grain yield significantly increased under weeding by cono weeder at 10 DAT, 20 DAT and 30 DAT in SRI method of rice cultivation and was 5674 and 5007 kg/ha in both the years, followed by weeding by cono weeder at 10 DAT and 20 DAT (5337 and 4714 kg/ha), manual weeding at 10 DAT, 20 DAT and 35 DAT (4995 and 4385 kg/ha) and manual weeding at 20 DAT and 35 DAT (4724 and 4196 kg/ha) while, the lowest grain yield (4143 and 3790 kg/ha) was recorded under no weeding or weed control by flooding water. Under treatment T1, 36.9 and 32.1% increase in grain yield were noticed compared to treatment T5, 20.1 and 19.3% increase against treatment T4, 13.6 and 14.2% against treatment T3, 6.3 and 6.2% against T2 respectively during Kharif 2008 and Kharif 2009 seasons.

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Keywords

Rice, system of rice intensification, cono weeder, yield, weeding.

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