E. Negrisoli, E. D. Velini, C. Rossi
Sep 1, 2007
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Influential Citations
12
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Journal
Planta Daninha
Abstract
ABSTRACT-The objectiveof thisworkwastoevaluatetheeffectiveness of tebuthiuronassociatedwith sugar cane straw to control weed under different conditions. Thus, an experiment wascarried out in pots with four replications where, besides being applied with and without straw,tebuthiuron wasapplied on 5 t straw ha -1 ; on soil recently covered with 5 t straw ha ;and onsoil without straw cover and with and without simulation of different amounts of rain appliedbefore or after herbicide application. The rate of Combine 500 SC (tebuthiuron) applied was1,000 g a.i. ha -1 with200 L ha ofsprayvolumeapplication.Theweedsusedwere Brachiariaplantaginea , Brachiaria decumbens and Ipomoea grandifolia . Weed control percentagewasevaluatedat7, 14,21, 28,35, 42,49 and56 daysafterapplication(DAA) whentebuthiuronwas applied in pre-emergence; and at 3, 10, 17, 24, 31 and 38 DAA when applied in post-emergence; dry matterweightwasevaluated at56 and 38 DAA, respectively. Regardless of theweedassessed, itwasverified thatthehighest controlrateswerereached whentebuthiuron wasappliedon thestraw,afterrainfallsimulationcorrespondingto2.5or30 mmor for thetreatments