Revista Brasileira De Herbicidas 2020; 19(4): 1-6
INTERFERENCE OF HERBICIDES IN THE MILLET DEVELOPMENT
Millet is an annual hot season grass that has an upright and tall size, used as a food source in livestock and as a soil cover in the no-tillage system. As it is a culture of low economic value, information about it is rare. The objective of the work was to verify the selectivity of the herbicides atrazine and 2,4-D applied alone or in association at different times in the millet culture. The experiment was carried out in the field in 12 m2 plots and randomized block design, with 10 treatments and four replications. The treatments were: 1- control without weeding; 2- weed control; 3- atrazine in pre-sowing; 4- post-sowing atrazine; 5- atrazine in V4; 6- 2,4-D in V4; 7- 2,4-D (150% of the dose) in V4; 8- atrazine in pre-sowing + 2,4-D in V4; 9- atrazine in post-sowing + 2,4-D in V4, 10-atrazine + 2,4-D in V4. The number of plants per linear meter, phytotoxicity at 7, 14, 21 and 28 days after application, plant height and shoot dry weight were evaluated. There was a reduction in the plant stand with application of atrazine in pre and post-sowing. The herbicide 2,4-D showed higher levels of phytotoxicity, lower plant height and lower dry mass production in all evaluations. The herbicide atrazine presents itself as a good alternative for weed control in the millet culture when applied in V4.
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