4.2 Article

Technical and economic feasibility of strobilurin fungicides application on maize

期刊

TROPICAL PLANT PATHOLOGY
卷 37, 期 4, 页码 246-254

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SPRINGER
DOI: 10.1590/S1982-56762012000400003

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Zea mays; azoxystrobin; physiological effect; pyraclostrobin

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Technical and economic feasibility of strobilurin fungicides application on maize In recent years, great emphasis has been given to the use of fungicides for managing foliar diseases in corn in Brazil. This study aimed to conduct an analysis of technical and economic feasibility of application of fungicides on maize in different growing regions. Trials were conducted to evaluate the effect of fungicides on the yield of different maize cultivars at three locations: Sete Lagoas (state of Minas Gerais), Londrina (state of Parana) and Rio Verde (state of Goias). The effect of one and two fungicide applications on each cultivar was evaluated. For each trial, the difference in mean yield and disease severities between treated and untreated plots for each cultivars was compared. For all trials, yield response of cultivars treated with fungicides was highly inconsistent under low disease severity. A higher frequency of positive yields and economic benefit occurred when fungicide applications were made under conditions of high disease pressure. More studies are needed to better clarify the effect of strobilurin fungicides on the physiology and production of corn plants.

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