Shafi, Jamil, 1. Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, Liaoning, P.R. China; 2. Department of Plant Pathology, University of Agriculture Faisalabad, Sub-Campus Depalpur, Okara, 6-KM, Lahore Road, G.T. Road, Okara, Punjab, Pakistan