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Population dynamics of Heterodera zeae under stress of a cropping sequence regime in Egypt

Population dynamics of Heterodera zeae under stress of a cropping sequence regime in Egypt

A.E. Ismail† and A.M. Kheir*

Plant Pathology Department, Nematology Laboratory, National Research Center, Cairo, Egypt
*Agricultural Zoology & Nematology Department, Faculty of Agriculture, Cairo
University, Egypt
†Corresponding author emails: iismail2002@yahoo.co.uk, President@nrc.sci.eg

ABSTRACT

Population dynamics of juveniles and cysts of corn cyst nematode, Heterodera zeae under stress of a cropping
sequence regime revealed that the average numbers in each stage greatly fluctuated. The density of juveniles or
cysts gradually increased with the favorable host (Giza 2 corn) to reach its peak at the crop maturity, while the
nematode population dropped sharply when the field became fallow. Likewise, the population densities of the
previous stages declined gradually even though in the presence of the non host crop (Meskawii Egyptian clover).

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Pakistan Journal of Nematology

June

Pakistan Journal of Nematology, Vol. 42, Iss. 1, Pages 1-87

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