Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2003.1942.1944 Alternaria solani (Ellis and Mart) Jones and Grout and Pytophthora infestans (Mont.) De Bary under Field Conditions]]>ParvezEjaz HussainShahid RashidAbdul AhmadM. Zafar122003623Recommended doses (200-250 gm acre-1) of five protectant and eradicant fungicides viz Banko (Chlorothalonil) 500 Sc, Score (Difenoconazole) 250 Ec, AcrobatMZ 90/600 WP, Metalaxyl+Mancozeb) 72 WP and Ridomil Gold (Mancozeb+Metalaxyl) 68 WP were tested against early and late blight diseases development on ten potato advance lines/varieties sown in a randomized complete block design in the research area of a private farm at Chiniot. All the fungicides reduced disease severity on most of the lines/varieties significantly compared to untreated control. However the effect of Metalaxyl+Mancozeb (72 WP), Ridomil Gold (68WP), Score (250 EC) and Banko (500 Sc) was pronounced on tolerant or moderately resistant varieties/lines compared to moderately susceptible or susceptible varieties/lines. Genetic potential of such lines/varieties was greatly exploited by the application of these fungicides. Cultivations of resistant/moderately resistant varieties along with timely one or two sprays of these fungicides will be helpful to control these diseases.]]>Ahmad, I. and J.I. Mirza,19952 mating type of Phytophthora infestans in Pakistan.]]>1995pp: 211219Anonymous,1985Phytophthora infestans) of Potato Disease Assessment for Crop Variety Trials.]]>Anonymous,2002Cooke, L.R., D.R. Clifford and M.E. Holgate,1981Phytophthora infestans) with systemic fungicides.]]>12678684Dahman, H. and T. Stanb,1992Venturia inaequalis, Cercospora arachidicola and Alternaria solani.]]>76774777Ghani, A., M. Sadiq, M. Habib, M. Shafiq and J. Iqbal,19951995pp: 312316Khan, B.A., I. Haq, S. Iftikhar and M. Aslam,198517163163Matheron, M.E. and J.E. Matejka,199175264268Mathur, R.S., B.K. Singh and M.S. Nagar Koti,1971245862Mohibullah,1995Alternaria solani and their effect on yield of potato (Abstr).]]>1995Reifshchneider, F.J.B., P. Furumoto and F.A.R. Rigueira,1984329194Rizvi, S.I.,19951995Shtienberg, D. and W.E. Fry,199074849852Siddiqui, H.A., A.L. Khanzada and U.H. Usmani,1995Alternaria solani (Ell and Mart) Jones and Grout (Abstr).]]>1995Singh, B.K.,197124400401Singh, R.S.,19987th Edn.,pp: 686pp: 686Steel, R.G.D. and J.H. Torrie,19802nd Edn.,Shuja, M.A.,19951995