Data/hora: 09/06/2024 02:40:27

Provedor de dados: | Ciência e Agrotecnologia
País: | Brazil
Título: | Agronomic characters and disease management in second season corn using calcium, copper, manganese and zinc products
Autores: | Lorenzetti,Eloisa; Tartaro,Juliano; Stangarlin,José Renato; Kuhn,Odair José.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Alternative control; Nutrition; Zea mays L.
Resumo: | ABSTRACT Corn is a cereal whose productivity can be reduced by various diseases which has recommended treatments for control. The objective of this study was to analyze copper, zinc, calcium and manganese products for the management of Pantoea ananatis, Puccinia polysora and Cercospora zeae maydis in second season corn, and interference in agronomic characteristics. Commercial products made of amino acid chelated with 15% calcium, 5% copper, 15% manganese and 10% zinc, at the doses of 0.5 kg ha-1, 0.3 L ha-1, 0.4 kg ha-1 and 1 L ha-1, respectively, a treatment with fungicide (20% azoxystrobin and 8% cyproconazole at 0.3 L ha-1 + 25% propiconazole at 0.4 L ha-1), and a treatment with water were assayed. The experiments were carried out under field conditions for two consecutive years and in two simple hybrids, in soil supplemented with nutrients based on the chemical analysis. The plant height, stem diameter, number of rows per spike, number of grains per row of spike, productivity and mass of one thousand grains were evaluated. Disease severity was assessed with diagrammatic scales and calculated the area under the disease progress curves. In both years, there was no significant effect of chelates for agronomic traits and diseases severity. It is concluded that chelate-based calcium, copper, manganese and zinc products have no influence on agronomic characteristics and severity of the diseases evaluated in second season corn for those edaphoclimatic conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100208
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-7054202044025019
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.44 2020
Fonte: | info:eu-repo/semantics/openAccess