000			02922nab a2200289 i 4500
003			BR-BrBNA
005			20230925132146.0
008			230801b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aH60 _b1900
100			_aSilva, B.M.
100			_aZandoná, R.R.
100			_aAvila Neto, R.C.
100			_aTorchelsen, J.
100			_aAgostinetto, D.
245			_aSelectivity of post-emergent herbicides for weed control in birdsfoot trefoil crops
500			_aPublicação on-line; 32 ref.; 8 tables; Summary (En)
520			_a ABSTRACT Background: Competition with weeds and the lack of selective herbicides registered for birdsfoot trefoil crops affect their development and limit their productivity. Objective: This study aimed to evaluate selectivity of post-emergent herbicides for weed control in birdsfoot trefoil crops. Methods: Experiments were carried out in a greenhouse and on a field, in both vegetative and reproductive development stages of birdsfoot trefoil crops. Treatments were composed of post-emergent herbicides recommended for soybean, corn and garlic cultivation. Phytotoxicity (PHYTO), plant height (HEI), shoot dry matter (SDM) and root dry matter (RDM) were evaluated. Data were submitted to the analysis of variance and when means were significant, they were compared by the Duncan’s Test (p≤0.05). In order to determine post-emergent herbicides which were selective to the crop, those that provided PHYTO below or equal to 15% were recommended, since they did not significantly interfere with morphological variables HEI, SDM and RDM, by comparison with the control. Results: Unlike results found in the vegetative stage, birdsfoot trefoil plants were more tolerant to phytotoxic effects of herbicides imazethapyr, chlorimuron-ethyl, cloransulam-methyl and fomesafen in the reproductive stage. The variables were negatively affected by the herbicides bentazon, glyphosate and carfentrazone-ethyl, with PHYTO higher than 40% at 20 days after treatment in the vegetative stage. Conclusions: Herbicides imazethapyr, chlorimuron-ethyl and flumetsulam, when applied as post-emergent ones, regardless of the development stage of the species, are selective to birdsfoot trefoil crops, without affecting crop development, whereas herbicides cloransulammethyl and fomesafen are not selective to them. Keywords: Lotus corniculatus management efficiency
650			_aLOTUS CORNICULATUS
650			_aGESTÃO
650			_aERVA DANINHA
650			_aHERBICIDA
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. 1-9; (2020) _wBR2023000828
856			_uhttps://www.scielo.br/j/pd/a/ZL7c3Wh6qKPxqw6B8WLbfVQ/?format=pdf&lang=en
942			_cAnalítica
999			_c9717 _d9717