TY - JOUR AU - Renuka, S. AU - Ramanujam, B. AU - Poornesha, B. PY - 2017/09/12 Y2 - 2024/03/28 TI - Colonization of Beauveria bassiana (Balsamo) Vuillemin strains in maize (Zea mays L.) and their efficacy against stem borer Chilo partellus (Swinhoe) JF - Journal of Biological Control JA - JBC VL - 31 IS - 1 SE - Research Articles DO - 10.18311/jbc/2017/15550 UR - https://informaticsjournals.com/index.php/jbc/article/view/15550 SP - 28-37 AB - <p>Glasshouse experiments were conducted to study the endophytic ability of six strains of entomopathogenic fungus <em>Beauveria bassiana</em> in maize leaf and stem tissues when applied through foliar sprays of oil formulations.  <em>B. bassiana</em> treated and untreated control plants were artificially infested with second instar larvae of <em>Chilo partellus </em>to assess the stem borer damage. All six strains showed varying percent colonization and persistence in stem and leaf tissues. The mean percent colonization ranged from 16.67-46.67 % in older stem tissues and 22.22-52.22 % in young stem tissues and in leaf, it ranged from 25.56-47.78 % in older leaf tissues and 31.11-57.78 % in young leaf tissues. Among six isolates tested, Bb-45 isolate recorded the maximum mean colonization in older stem (46.67 %), older leaf (47.78%) and in young stem (52.22 %). Bb-5a isolate showed maximum mean colonization in young leaf tissues (57.78 %). Significantly lower percentage of dead hearts (2.2-11.1%) and lower stem tunneling (2.7-4.3cm/plant) was observed in <em>B. bassiana</em> treated plants as compared to the untreated control plants (28.86% of dead hearts and 13.41cm/plant stem tunneling).   </p> ER -