Data/hora: 11/06/2024 13:09:21

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 23/11/2018
Data da última atualização: | 24/11/2018
Autoria: | NOLLA, A.; JUCKSH, I.; CASTALDO, J. H.; ALVARENGA, R. C.; ALBRECHT, L. P.
Afiliação: | Universidade Estadual de Maringá; Universidade Federal de Viçosa; Universidade Estadual de Maringá; RAMON COSTA ALVARENGA, CNPMS; Universidade Federal do Paraná.
Título: | Growth and accumulation of nutrients by weeds, in maize and legumes intercrops.
Ano de publicação: | 2018
Fonte/Imprenta: | Planta Daninha, v. 36, e01817543, 2018.
DOI: | 10.1590/S0100-83582018360100096
Idioma: | Inglês
Conteúdo: | The 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.
Palavras-Chave: | Fitossociologia; Planta daninha.
Thesagro: | Adubo Verde; Consorciação de Cultura; Erva Daninha; Feijão de Porco; Leguminosa; Milho; Mucuna Preta.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/186963/1/Growth-accumulation.pdf
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (28553-1) - UPC - AP - DD -  -  -  - DIS