Interferência do caruru-roxo no crescimento e na produtividade da pimenta dedo-de-moça

• Ano de defesa: 2015
• Autor(a) principal: Oliveira, Thiago Souza [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Pimenta; Plantas - Competição; Distribuição espacial da população; Densidade; Produtividade; Plant competition
• Link de acesso: http://hdl.handle.net/11449/135914; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/15-02-2016/000858190.pdf

Brazil stands out as one of the world's largest pepper growers. Among the most produced cultivars, Aji Amarillo pepper (Capsicum baccatum L.) are highly relevant. The pigweeds (Amaranthus sp.) are plants with great interference potential with crops due the favorable conditions provided by the agricultural environment, particularly in the early stages of crop growth. Therefore, this study aimed to evaluate the interference of smooth pigweed (Amaranthus hybridus) on growth and productive characteristics of Aji Amarillo pepper. In order to do so, cement boxes were used as experimental parcels in which the proportion of pepper population was fixed, in the center of the box, varying the population smooth pigweed in the increasing densities of 1, 2, 3, and 4 plants 0.36 m2, at 5 and 10 cm distance from the pepper plant. The experimental design was completely randomized, and for the pepper, the treatments were arranged in a 2x4 factorial design + control, corresponding to two distances and four densities of smooth pigweed, and a weed free control parcel. Growth and productivity characteristics were evaluated until 90 days after planting. The smooth pigweed showed negative interference with Aji Amarillo pepper regardless of distance and density for growth characteristics, being only the stem diameter affected at 45 DAP, and the productive characteristics of fruit number, fresh fruit matter, dry matter of fruits, seeds, leaves and stem, all were affected, featuring greatly reduction in the crops potential productivity. Smooth pigweed also decreased in biomass accumulation, independent of distance and density it was planted