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Frontiers of Agriculture in China

ISSN 1673-7334

ISSN 1673-744X(Online)

CN 11-5729/S

Front. Agric. China    2008, Vol. 2 Issue (1) : 66-71     DOI: 10.1007/s11703-008-0010-x
Infection of on pepper-Models and affecting factors
LIU Xuemin1, ZHOU Yanling2, LI Lijun3
1.College of Agronomy, Northeast Agricultural University; 2.Life Science College, Northeast Forestry University; 3.Agrochemicals Management and Test Station of Heilongjiang Province;
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Abstract Under controlled conditions in a growth chamber, we studied the mortality of pepper seedlings caused by Phytophthora capsici. The results showed that soil temperature and soil water content were important factors affecting their infection with P. capsici and the optimum condition for infection was found to be a soil temperature of 22°C–28°C and a soil water content of 40%. The relationships of pepper seedling mortality caused by P. capsici along with soil temperature, soil water content and their interactions can be described by mathematical models. Field observations suggested that the Gompertz model was the best one for describing the epidemiological dynamics of the disease. The incidence of pepper phytophthora blight was significantly related to the initial incidence of pepper phytophthora blight, soil temperature, soil water content and air temperature. A forecasting model for pepper phytophthora blight in the field was developed.
Issue Date: 05 March 2008
 Cite this article:   
LIU Xuemin,ZHOU Yanling,LI Lijun. Infection of on pepper-Models and affecting factors[J]. Front. Agric. China, 2008, 2(1): 66-71.
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