Evaluation of post emergence herbicides in chickpea
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Date
2010
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CCSHAU
Abstract
The field experiment entitled “Evaluation of post emergence herbicides in chickpea” was conducted at
Pulses Research Farm, Chaudhary Charan singh Haryana Agricultural University, Hisar during rabi season
of 2008-09. The experiment was laid out in Randomized Block Design with three replication having
thirteen weed control treatments (weedy, weed free, two hand weeding, quizalofop @ 40 and 50 g/ha,
imazethapyr @ 25 and 40 g/ha and chlorimuron-ethyl @ 4 g/ha applied at 20 and 30 DAS).
The highest grain yield was obtained in weed free treatment followed by two hand weeding.
Weedy condition resulted in -68 and -65 per cent reduction in chickpea yield as compared to weed free and
two hand weedings. Quizalofop @ 50 g/ha applied at 30 DAS produced the maximum grain yield. The
dominant weeed flora was Chenopodium album, Fumaria parviflora and Phalaris minor. Quizalofop was
found effective in controlling Phalaris minor, whereas, imazethapyr controlled Chenopodium album and
fumaria parviflora. Imazethapyr was found phytotoxic to chickpea plants to the 40 to 60 per cent, which
later on vanished 90 DAS. Chlorimuron-ethyl was phytotoxic to chickpea crop and its application resulted
in mortality of chickpea crop that’s why it recorded the lowest values of all the parameter of crop growth.
Chickpea crop under weed free condition removed the highest N, P and K followed by two hand weeding
and quizalofop applied @ 50 g/ha at 30 DAS, whereas, maximum uptake of these nutrients by weeds was
found in weedy treatment. No residual effect of these herbicides on succeeding sorghum and mung bean
crop was observed. Two hand weeding treatment was the most economical treatment in terms of net return.
Description
Keywords
Livestock, Biological phenomena, Concentrates, Additives, Alkaloids, Poultry equipment, Freezing, Organic compounds, Fertilizers, Thawing