Survey on Phytophthora Species in Aliabad and Gharetapeh Villages from Varamin City of Iran by GIS Software

Majid Shahi-Bajestani, Kheyzaran Dolatabadi


During the sampling of sub-crop areas in Aliabad and Gharetapehh of Varamin, 181 soil samples collected from the location set by GPS. After baiting and cultured samples on specific medium of the genus Phytophthora, species identified by valid keys and recorded the pollution of the genus Phytophthora in all samples conducted by GIS software. The results confirmed the existence of two species Phytophthora drechsleri and Phytophthora capsici. After searching about infection rate of each samples to the phytophthora by kriging algorithm with GIS software and correlation comparison of kriging map for amount of disease ,the percentage of sand in the soil and ups and downs on earth results showed that the slope of the land, pond areas, and that places with less electrical conductivity were contaminated.

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