Sistemas de controle químico de capim pé-de-galinha na soja

Detalhes bibliográficos
Ano de defesa: 2020
Autor(a) principal: Kotsubo, Rafael Massaru
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Mato Grosso
Brasil
Instituto de Ciências Agrárias e Ambientais (ICAA) – Sinop
UFMT CUS - Sinop
Programa de Pós-Graduação em Agronomia
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://ri.ufmt.br/handle/1/4792
Resumo: Soybean crop can be negatively affected by competing with weeds, which can reduce yield. This trial aimed to evaluate different alternatives for the control of goosegrass in soybean crop. Two experiments were conducted with the same treatments at different times, with the purpose of evaluating the efficiency of herbicides applied in the preemergence of soybean and goosegrass, and post-emergence glyphosate applications in two different moments, first at 21 days after the emergency and 28 days after the emergency. The location of the field trial was at Monsanto experimental station in Sorriso/MT in the 2018/2019 season, the central location of the station is S 12 ° 25 '39.2 "and W 55 ° 38' 16.3". The experimental design was completely randomized blocks with 10 treatments and 4 replications. Visual assessments of control percentage were performed at 14 days after herbicide applications and at pre-harvest. The weed infestation rate was evaluated at 28 days after the last application after crop emergence and preharvest. The first trial demonstrated high infestation, and effective control with herbicides sprayed in preemergence combined with post-emergence application, allowing more flexibility of post-emergence application. In the second trial, it represented a scenario of low infestation and with different germination moments of the goosegrass, without weed interference on yield.