02413naa a2200289 a 450000100080000000500110000800800410001902400410006010000140010124501070011526000090022252016070023165000160183865000300185465000170188465000210190165000150192265000100193765000170194765300200196465300190198470000150200370000200201870000210203870000200205977300440207920999402018-11-24       2018    bl uuuu     u00u1 u    #d7 a10.1590/S0100-835820183601000962DOI1 aNOLLA, A.  aGrowth and accumulation of nutrients by weeds, in maize and legumes intercrops.h[electronic resource]  c2018  aThe presence of weeds on fields is a concern for farmers, due to competition with the commercial crops, reducing yields. The intercropping of maize with legumes provides weed control; after senescence, the nutrients accumulated by plants are released, recycling nutrients. The study of plant species and their diversity is called phytosociology. This study aimed at evaluating the accumulation of dry phytomass by maize intercropped with legumes and weeds species, and at evaluating nutrient cycling and the phytosociology of weeds. The experiment consisted of maize intercropped with legumes cover crops: jack-beans, Brazilian jack-beans, velvet bean, lablab-beans, and pigeon pea, and the control treatment (maize without intercrop), all without chemical or mechanical weed control. Maize was sown in the plots, and legumes were sown 64 days after maize. Maize was harvested 120 days after sowing (DAS), and legumes at 144 DAS. Weeds were sampled at 84 and 144 DAS. It was possible to evaluate the accumulation of dry phytomass, the nutrient content of the intercrop components, and the phytosociology of weeds. The phytomass accumulation by maize was not affected by the intercrop with legumes. The intercrop with velvet bean accumulated higher dry phytomass and suppressed weeds. Jack beans accumulated dry mass, but did not suppress weeds. The intercropping system changed the diversity of weeds. Panicum maximum, Commelina nudiflora, Commelina benghalensis, Leonotis nepetaefolia and Melampodium divaricatum stood out by presenting higher values of phytosociological index and nutrient recycling.  aAdubo Verde  aConsorciação de Cultura  aErva Daninha  aFeijão de Porco  aLeguminosa  aMilho  aMucuna Preta  aFitossociologia  aPlanta daninha1 aJUCKSH, I.1 aCASTALDO, J. H.1 aALVARENGA, R. C.1 aALBRECHT, L. P.  tPlanta Daninhagv. 36, e01817543, 2018.