Screening of Different Aubergine Cultivars against Infestation of Brinjal Fruit and Shoot Borer (Leucinodes orbonalis Guenee)
Screening of Different Aubergine Cultivars against Infestation of Brinjal Fruit and Shoot Borer (Leucinodes orbonalis Guenee)
Ajmal Khan Kassi1*, Humayun Javed1 and Tariq Mukhtar2
ABSTRACT
In the present study, response of five aubergine cultivars was evaluated against Brinjal Fruit and Shoot Borer (Leucinodes orbonalis Guenee) under field conditions. The cultivar Round White Brinjal showed maximum fruit infestation (54.44%) followed by Singhnath 666 (53.19%) while the minimum fruit infestation was observed on Round Brinjal 86602 (42.39%). Contrarily, Short Purple cultivar showed maximum larval population (0.43) followed by Round White Brinjal (0.39) while the minimum larval population was observed on Round Brinjal 86602 (0.27) and was found comparatively resistant against the pest. The correlation between fruit infestation and larval population and different environmental factors was also studied. Average relative humidity was found positive and significantly correlated with fruit infestation. Average precipitation showed positive but non-significant correlation in case of all the cultivars except Singhnath 666 which was positive and significant. On the other hand, average temperature was found non-significant and negatively correlated in case of Brinjal Long 6275, Round Brinjal 86602 and Singhnath 666 while significant but negatively correlated in case of Short Purple and Round White Brinjal. Maximum temperature also showed significant and negative correlation for all the cultivars. Minimum temperature was observed negative but non-significantly correlated for all the cultivars. As Round Brinjal 86602 suffered less damage by the borer and therefore, is recommended for cultivation in arid and semi-arid regions.
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April 2019
Vol. 51, Iss. 2, Pages 399-799
