Vol. 8 No. 1
Arriving the dose of fluchloralin and pendimethalin for lentil [Lens culinaris L.] through bioassay in terai agro-ecological region of West Bengal
Author(s): B. DE AND . DAS
Abstract: Field studies were conducted in West Bengal, India, during the 2007/08 rabi season, to determine the most effective fluchloralin and pendimethalin rates for weed control in lentil. The treatments comprised 0.00, 0.30, 0.50, 0.70, 0.90, 1.10, 1.30, 1.50, 1.70 and 1.90 kg fluchloralin/ha and 0.00, 0.10, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, 0.90 and 1.00 kg pendimethalin/ha. Visual observations were made everyday to determine the changes in growth behaviour of the plants and appearance of phytotoxic symptoms due to herbicidal toxicity on lentils at different application rates. Results showed that the maximum herbicide rates tolerated by lentil was equal to the rate that caused 10% growth reduction during the initial stages and the minimum rate required to make the herbicide effective was equal to the dose that caused 5% growth reduction at the initial stages.
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