Características morfoagronômicas do milho submetido a diferentes níveis de desfolha manual
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Data
2012-03-01
Autores
Pereira, Marcel José Roma
Bonan, Everton César Biazotti
Garcia, Anice
de Lima Vasconcelos, Ricardo [UNESP]
Gíacomo, Karina dos Santos
Lima, Marcelo Ferreira
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Resumo
The present study was conducted to evaluate the damage caused by defoliation in maize. The experiment was carried out in 2005/2006 at Roma Farm, Ituverava-SP, using the triple hybrid CODETEC 304®. The experiment consisted of split plots (split-plot), which were distributed at random in three blocks, with the main treatment manual defoliation (30%, 40%, 60% and 80% defoliation) in the plots and as the secondary treatment the phenological phases (D1, D2 and D3) with three replicates for each treatment and a control plot (0% defoliation) for each block. It was evaluated the production of plots (g/m2), the average size of the spikes (cm) and the average weight of thousand grains (g). According to the results, it was concluded that the source-sink relations were negatively affected, and the treatment with 80% defoliation was the one that most affected all variables, thus, it is a level of defoliation that is responsible for the largest losses, with no means of compensation for the maize crop.
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Palavras-chave
Cob, Grain yield, Zea mays L., Zea mays
Como citar
Revista Ceres, v. 59, n. 2, p. 200-205, 2012.