Field Evaluation of Entomopathogenic Fungi against White Grub, Holotrichia consanguinea Blanch in Sugarcane
Field experiments were conducted on sugarcane for white grub management using two entomopathogenic fungi i.e., Beauveria bassiana and Metarhizium anisopliae in Andhra Pradesh during 2013-14. Among the treatments imposed at the time of planting, M. anisopliae @ 5×1013 spores ha-1 mixed with farm yard manure (FYM) was found effective followed by B. bassiana @ 5×1013 spores ha-1 applied in FYM enriched field and registered 93.6 % and 88.09 % decrease in white grub damage and 77.22 % and 74.08 % decrease in white grub population. The highest cane yield was recorded when M. anisopliae @ 5x1013 spores ha-1 (81.44 t ha-1) applied with FYM followed by B. bassiana @ 5×1013 spores ha-1 (76.6 t ha-1) with FYM . Similar trend was observed by imposing treatments at one month after planting i.e., after the onset of monsoon in the month of july. M. anisopliae @ 5×1013 spores ha-1 (79.73 t ha-1) recorded highest cane yield followed by B. bassiana @ 5×1013 spores ha-1 (76.45 t ha-1) when applied with FYM at one month after planting. However, highest percent yield increase was recorded in M. anisopliae @ 5x1013 spores ha-1 (71.56 %) applied with FYM at the time of planting.
Sugarcane, Holotrichia consanguinea, Beauveria bassiana, Metarhizium anisopliae, Field Evaluation.
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