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Quantitative relation between absolute and relative measures of Cephus fumipennis [Hymenoptera: Cephidae] densities

100%

Zhao L.

Journal of Plant Protection Research

2006

tom 46

nr 4

397-402

Cephus fumipennis Eversmann is a key insect pest of wheat crops in Qinghai, China. Its field population densities were surveyed by using both the back-loaded insect vacuum and a sweep net. Mean densities in township-level were calculated and a quantitative relation, ỹ =0,664 + 0,214 x, was established between the two sampling methods. The empirical relationship may be applicable in density monitoring and Integrated Pest Management program of the insect.

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1 Journal of Plant Protection Research

1 Zhao L.

1 2006

Wyniki wyszukiwania

Quantitative relation between absolute and relative measures of Cephus fumipennis [Hymenoptera: Cephidae] densities