International Journal of Plant Protection

Archana T. Ambule ¹, V. S. Desai ¹, D. L. Patil ², N. R. Toke ²

Affiliations
1 Department of Agriculture Entomology, College of Agriculture, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli, Ratnagiri (M.S.), IN
2 Department of Agriculture Entomology, Navsari Agricultural University, Navsari (gujarat), IN

Abstract

An experiment was conducted to study the feeding potential of Cryptolaemus montrouzieri Mulsant on different species of mealybugs at Department of Agricultural Entomology, College of Agriculture, Dapoli. The feeding potential of C. montrouzieri on grubs and adults of mealy bugs jointly revealed that the total consumption of grub was much higher on M. hirsutus i.e. 144.4±15.64 with their longevity of 12.10±2.1 days than Phenacoccus solani and custard apple mealy bugs. Similar pattern of consumption was found in case of adults, where the female predator consumed more i.e. 443.90±27.13 with longevity of 27.45±1.08 days. The overall findings of the feeding potential showed that the Australian ladybird beetle nymphs and adults consumed more number of preys of M. hirsutus than other two species.

Keywords

Cryptolaemus Montrouzieri, Mealybug, Feeding Potential

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Archana T. Ambule ¹, G. G. Radadia ¹, D. L. Patil ¹, N. R. Toke ¹

Affiliations
1 Department of Agricultural Entomology, N.M.College of Agriculture, Navsari Agricultural University,NAVASRI (GUJARAT), IN

Abstract

The study on relation of morphological characters to fruit infestation of H. armigera was conducted in College Farm, N.M.C.A, Navsari Agricultural University, Navsari, Gujarat during two consecutive years 2012-13 and 2013-14. The result showed that the correlation of plant height (r= 0.7775), branches plant^-1 (r= 0.7874), and fruits plant^-1 (r= 0.7388) with infestation of H. armigera were significantly positive, while the effect of fruit pericarp thickness (r= - 0.9576) exhibited significantly negative association with the damage of tomato fruit borer. However the stem diameter, fruit diameter, locules fruit^-1 and calyx fruit^-1 showed positive but non-significant association with fruit infestation recorded 0.4855, 0.3048, 0.3413 and 0.3943 correlation values, respectively.

Keywords

Morphological Characters, Tomato Fruit Borer, Helicoverpa armigera (Hubner).

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