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Study on Epidemics of Gray Leaf Spot of Maize in Shenyang Region

Haichun Li

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Abstract

The LOGISTIC model can reflect well the development process of gray leaf spot in field by artificial inoculation.Next is GOMPOERTZ.The results showed that the exponential phase of gray leaf spot was from the breeding to the early of Jul.,the Logistic phase was to the later of Aug.,and the terminal phase was from the early of Sep.The optimal prevent time was the later of June.

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What this paper is about

The LOGISTIC model can reflect well the development process of gray leaf spot in field by artificial inoculation.Next is GOMPOERTZ.The results showed that the exponential phase of gray leaf spot was from the breeding to the early of Jul.,the Logistic phase was to the later of Aug.,and the terminal phase was from the early of Sep.The optimal prevent time was the later of June.

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Available abstract

The LOGISTIC model can reflect well the development process of gray leaf spot in field by artificial inoculation.Next is GOMPOERTZ.The results showed that the exponential phase of gray leaf spot was from the breeding to the early of Jul.,the Logistic phase was to the later of Aug.,and the terminal phase was from the early of Sep.The optimal prevent time was the later of June.

Key concepts: Gray (unit), Leaf spot, Biology, Agronomy, Horticulture, Medicine, Radiology

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