Influência do espaçamento e população de plantas sobre doenças de final de ciclo e oídio e caracteres agronômicos em soja - DOI: 10.4025/actasciagron.v28i3.962

Jorge Luiz Knebel; Vandeir Francisco Guimarães; Marcelo Andreotti; José Renato Stangarlin

doi:10.4025/actasciagron.v28i3.962

Influence of row spacing and plant population on late season disease severity, powdery mildew and agronomic characters in soybean - DOI: 10.4025/actasciagron.v28i3.962

Jorge Luiz Knebel UNIOESTE
Vandeir Francisco Guimarães UNIOESTE
Marcelo Andreotti UNESP
José Renato Stangarlin UNIOESTE

DOI: https://doi.org/10.4025/actasciagron.v28i3.962

Abstract

This study was carried out in Cascavel, Paraná State, during the growing season 2004/2005, using soybean cultivar CD 202. The aim was to evaluate the influence of row-spacing and plant population on late season disease severity (Septoria glycines and Cercospora kikuchii), soybean powdery mildew (Microsphaera diffusa) and agronomic characters of the culture. The treatments were three row spacing (22.5; 45.0 and 67.5 cm) and three plant populations (200; 400; and 600 thousand plants ha^-1). Late season disease had smaller severity in the reduced spacing and in the lowest population, while the powdery mildew occurrence did not modify with these factors. In all spacing, as larger the plants density, larger the plants height and consequently larger the plants fallen. The number pods per plant was higher with the largest spacing and it decreased with the population increase; the number of grains per plant decreased with the population increase; and the productivity was higher in the smallest spacing.

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Author Biography

Vandeir Francisco Guimarães, UNIOESTE

Vandeir Francisco Guimarães, possui graduação em Agronomia pela Universidade Federal Rural do Rio de Janeiro (1995), mestrado em Fitotecnia, Área de Concentração Fisiologia da Produção, pela Universidade Federal Rural do Rio de Janeiro (1998), doutorado em Agronomia (Área de Concentração Agricultura) pela Universidade Estadual Paulista Júlio de Mesquita Filho, FCA/UNESP (2001) e pós-doutorado em Botânica, na Área de Fisiologia Vegetal pela Universidade Estadual Paulista Júlio de Mesquita Filho, UNESP (2002). Atualmente é professor adjunto nível b, RT-40, da Universidade Estadual do Oeste do Paraná (UNIOESTE). Tem experiência na área de Agronomia, com ênfase em Fisiologia de Plantas Cultivadas e Manejo e Tratos Culturais, atuando principalmente nos seguintes temas: Utilização de reguladores vegetais em plantas hortícolas, frutíferas e culturas anuais; Análise de crescimento e desenvolvimento vegetal; Fisiologia da germinação; Fisologia do estresse hídrico (mecanismos de tolerância à seca), nutrição mineral de plantas; cultura de tecidos vegetais; manejo e tratos culturais e fisiologia do da produção Currículo Lattes

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Published

2008-03-04

How to Cite

Knebel, J. L., Guimarães, V. F., Andreotti, M., & Stangarlin, J. R. (2008). Influence of row spacing and plant population on late season disease severity, powdery mildew and agronomic characters in soybean - DOI: 10.4025/actasciagron.v28i3.962. Acta Scientiarum. Agronomy, 28(3), 385-392. https://doi.org/10.4025/actasciagron.v28i3.962

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Issue

Vol 28 No 3 (2006)

Section

Crop Protection

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