Chemical control of aphids Myzus persicae (Sulz.) on potato Solanum tuberosum L.
2013
Baseer, A. (PARC Crop Diseases Research Inst., Karachi (Pakistan)) | Ali, Q.M. (PARC Arid Zone Research Centre, Quetta (Pakistan)) | Abro, B.A. (PARC Crop Diseases Research Inst., Karachi (Pakistan)) | Baloch, P.A. (PARC Plant Introduction Centre, Karachi (Pakistan)) | Ahmad, A. (PARC Southern Zone Agricultural Research Centre, Karachi (Pakistan). Grain Storage Research Inst.)
A field experiment was carried out to determine the performance of some insecticides against aphid Myzus persicae (Sulz.) on potato Solanum tuberosum L in the experimental site of integrated pest management (IPM) Section, Agriculture Research Institute, Tandojam, during winter season of 2005-2006. Five insecticides namely Confidor 200 SL at 250 ml per acre, Systoate 40 EC at 330 ml per acre, Mospilan 40 EC at 300 ml per acre, Pan-Star 20 EC at 500 ml per acre and Primor 50 DG at 250 ml per acre, were evaluated and compared with untreated check using a four replicated Randomized complete block design. Results reveal that, population reduction in aphid in treated potato gradually increased with an increase in exposure interval up to 72 hours. After an exposure time of 72 hours the reduction in aphid population reduced in all the treatments. After maximum exposure interval of 2 weeks, Confidor 200 SL, Systoate 40 EC and Primor 50 DG induced more than 80% reduction in aphid population, whereas Mospilan 40 EC and Pan-Star 20 EC caused reduction of 74.89% and 69.09%, respectively. The results further show that, highest marketable potato yield (34.58 mt per ha) was recorded in the plot treated with Systoate 40 EC, followed by 34.05 mt per ha and 33.95 mt per ha in plots treated with Confidor 200 SL and Primor 50 DG, respectively. The lowest marketable potato yield (29.58 mt per ha) was obtained in plot treated with Pan-star 20 EC. These results show that Confidor 200 SL, Systoate 40 EC and Primor 50 DG could be used effectively for aphid management to increase marketable potato yield.
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