Prediction of Potato Late Blight Disease Based upon Environmental Factors in Faisalabad, PakistanNadeem Ahmed1*, Muhammad Aslam Khan1, Nasir Ahmad Khan1 and Muhammad Asif Ali2
- *Corresponding Author:
- Nadeem Ahmed
Department of Plant
E-mail: [email protected]
Received date: June 16, 2015 Accepted date: June 22, 2015 Published date: June 24, 2015
Citation: Ahmed N, Khan MA, Khan NA, Ali MA (2015) Prediction of Potato Late Blight Disease Based upon Environmental Factors in Faisalabad, Pakistan. J Plant Pathol Microbiol S3:008.doi:10.4172/2157-7471.S3-008
Copyright: © 2015 Ahmed N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Potato late blight (PLB) caused by Phytophthora infestans (Mont.) de Bary, is an important and serious threat to successful potato production in the world. It spreads through seed and soil residual material. In Pakistan, PLB disease can induce 100% yield losses under epidemic condition. Due to lack of resistance in indigenous potato germplasm, disease is managed through fungicides by the growers of Pakistan. Excessive use of fungicides causes resistance in the pathogen and creates fatalistic effect on the environment. Disease predictive model under such situation may be effective tool to predict early onset of disease. A disease predictive model was developed on two years data of PLB disease severity and epidemiological factors using stepwise regression analysis. Model explained upto 80% disease variability. Maximum and Minimum temperature, relative humidity, rainfall and wind speed appeared to be most significant factors in the PLB disease development. The environmental conditions conducive for the development of PLB disease were characterized. Maximum and minimum temperatures in the range of 16-20°C and 1-6°C were found favourable for potato blight disease. Similarly, relative humidity, rainfall and wind speed in the range of 63-71%, 1.5-3.75 mm and 1-5.5 Km/h, respectively, were conducive for PLB disease which are helpful in disease development.