TY - JOUR AU - Pokharkar, D. S. AU - Jogi, R. R. PY - 2000/01/01 Y2 - 2024/03/28 TI - Biological Suppression of Potato Tubermoth, Phthorimaea operculella (Zeller) with Exotic Parasitoids and Microbial Agents under Field and Storage Conditions JF - Journal of Biological Control JA - JBC VL - 14 IS - 2 SE - Articles DO - 10.18311/jbc/2000/4157 UR - https://informaticsjournals.com/index.php/jbc/article/view/4157 SP - 23-25 AB - Investigations on bioefficacy of parasitoids and microbial agents against potato tubermoth (PTM), <em>Phthorimaea operculella</em> (Zeller) (Lepidoptcra: Gelechiidae) were carried out under field and storage conditions of potato during 1996-1997. The results showed that three sprays of endosulfan 0.05 per cent at 10 days interval proved to be the most effective and on par with four releases of<em> Chelonus blackburni</em> Cameron @ 15000 adults/ha/release at weekly interval,<em>Copidosoma koehleri</em> Blanchard @ 50000 adults/ha/lrelcase and<em> Trichogramma chilonis</em> Ishii @ 50000 adults/ha/releasc at weekly interval, and three sprays of <em>Bacillus Thuringiensis</em> Berliner @ 1 kg/ha at 10 days interval. Amongst the parasitoids, maximum parasitism was recovered through retrieval with <em>C. blackburni</em> (71.78 %), followed bye <em>C. koehleri</em> (69.39%) and <em>T. chilonis</em> (61.33%). Under storage conditions (<em>Arnies</em>), initial release of <em>C. blackburni</em> @ 2 adults/kg tubers recorded minimum tuber infestation (7.21 %) after 60 days. ER -