000			02862nab a2200265 i 4500
003			BR-BrBNA
005			20230920134658.0
008			230808b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aH60 _b2120
100			_aRonchi, C.P.
245			_aAssociation of chemical and mechanical weed control methods during the pre-harvest of coffee crops
500			_aPublicação on-line; 32 ref.; 2 tables; 6 illus.; Summary (En)
520			_a ABSTRACT Background: Weed control in the pre-harvest of the coffee crop is essential to enable mechanized coffee harvesting. Objective: Testing the efficacy of pre-emergent herbicides, applied after brush shredder or desiccation operations, on the weed control during the coffee crop’s pre-harvest. Methods: Two separate trials were accomplished in commercial Coffea arabica crops in the Cerrado Mineiro Region. In the first one, oxyfluorfen and sulfentrazone were applied after either brush shredder or burndown operation; in the second, they were tested as a tank mixture with glyphosate. Results: In the first assay, the brush shredder use, associated to the rains that follow, stimulated a sharp weed infestation during the preharvest, which was not observed in desiccated plots. A sole application of oxyfluorfen or sulfentrazone, following either brush shedder or desiccation operation, effectively controlled the weeds; however, the sequential applications on burndown areas may be needless. The applied herbicides did not intoxicate the coffee plants nor affect their growth. In the second assay, both herbicide mixtures were highly efficient on the weed control through post-emergence application during the pre-harvest, what was not observed with a sole application of glyphosate. In both experiments, a dry period during winter, associated to the operations to gather fallen coffee fruit, collectively contributed to control weeds. Differently from oxyfluorfen, the residual effect of sulfentrazone was high enough to control weed even in the beginning of the rainy season. Conclusion: Sulfentrazone and oxyfluorfen were effective on the weed control in the pre-harvest of the coffee crop, mainly when applied after brush shedder operations Keywords: Coffea arabica burndown herbicide integrated weed management
650			_aERVA DANINHA
650			_aCOFFEA ARÁBICA
650			_aCAFÉ
650			_aHERBICIDA
650			_aCONTROLE QUÍMICO
650			_aCONTROLE MECÂNICO
773	0		_0886 _91817 _dLondrina-PR : Sociedade Brasileira da Ciência das Plantas Daninhas, 1978 _o2023-031024 _tPlanta Daninha (Brazil) _x0100-8358; 1806-9681 (on-line) _gv. 38 p. 1-11; (2020) _wBR2023000852
856			_uhttps://www.scielo.br/j/pd/a/Hxm9X7h3PkwrN4MCX58k6VN/?format=pdf&lang=en
942			_cAnalítica
999			_c9767 _d9767