Evaluation of Imazetapyr herbicide efficiency for weed control in common bean (Phaseolus vulgaris L.) in Chaharmahal and Bakhtiari Province
The effect of pre-planting application, pre-emergence and post-emergence of Imazethapyr herbicide in different rates was studied in comparison with Trifluralin, Ethalfluralin and Bentazon. Experiment was arranged in a complete randomized block design in 19 treatments and 4 replications, at Chahartakhteh staton, Agricultural and Natural Resources Research and Education Center, Chaharmahal and Bakhtiari Province during 2016-2017. The lowest level of weeds density was observed at 15 days (2 plants/m2) and 30 days (1 plant/m2) after application of herbicides in pre-planting treatment of Imazethapyr (0.7 l/ha). Moreover, the highest level of weeds biomass reduction was observed at 15 and 30 days after herbicides application in pre-planting treatments of Imazethapyr at 0.7 and 1 l/h. The percentage of biomass reduction of weeds population was calculated more than 95% for mentioned treatments. Therefore, the pre-planting application of Imazethapyr (at the rate of 0.7 l/ha) is recommended for weeds management of bean fields, because of the lower active ingredient of Imazethapyr compare to the other treatments.
Weeds , Imazethapyr , Bentazon , Trifluralin , Ethalfluralin
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