02280naa a2200325 a 450000100080000000500110000800800410001902200140006002400580007410000220013224501000015426000090025452013090026365000210157265000280159365000100162165000220163165000220165365000240167565000190169965300210171865300190173965300240175870000200178270000250180270000170182770000250184470000240186977300610189321368392021-11-30       2021    bl uuuu     u00u1 u    #d  a0100-316X7 ahttp://dx.doi.org/10.1590/1983-21252021v34n106rc2DOI1 aARAÚJO, F. C. de  aCover crops in the off-season in the weed management at no-tillage area.h[electronic resource]  c2021  aCover crops can provide suppression of weeds and together with chemical control make the proper management of weeds in agricultural areas. The objective of this study was to evaluate the effect of cover crop cultivation during the off-season on weed development in a no-tillage area. The experimental design was in randomized blocks scheme with six treatments and four replications. The treatments were: fallow (control), millet (Pennisetum glaucum) + crotalaria (Crotalaria spectabilis + C. juncea + C. ochroleuca), millet + pigeon pea (Cajanus cajans), millet + Urochloa ruziziensis, millet + Urochloa ruziziensis + pigeon pea and millet + buckwheat (Fagopyrum esculentum. The evaluations were done at 30, 75 and 225 days after sowing of the cover crops (DAS). The main growth weed species in the area were Cenchrus echinathus, Euphorbia heterophylla and Digitaria insularis. Fallow treatment showed greater number of weed species with density of 184 plants m-2, 9.0 species and with 527.8 g m-2 of dry matter mass at 225 DAS. In all treatments verified reduction in the density and mass of weeds dry matter compared to the fallow, with average of 30 plants m-2, 5.8 species and 7.9 g m-2 at 225 DAS, respectively. The use of cover crops is an important strategy for weed control in agricultural areas.  aCultural control  aSustainable development  aWeeds  aControle Cultural  aControle Químico  aPlanta de Cobertura  aPlantio Direto  aManejo integrado  aPlanta daninha  aPlantas infestantes1 aNASCENTE, A. S.1 aGUIMARÃES, J. L. N.1 aSOUSA, V. S.1 aFREITAS, M. A. M. de1 aSANTOS, F. L. de S.  tRevista Caatingagv. 34, n. 1, p. 50-57, jan./mar. 2021.