Influence of Physical Traits of Certain Green Gram Varieties on the Life Parameters of Leaf Folder (nacoleia Vulgalis Guen.)

Physical traits of crop varieties influence the level of susceptibility of the varieties to the pest species. Investigations were carried out to find the possible influence of physical traits of certain green gram varieties on the life parameters of Nacoleia vulgalis. It was evident from the data that the varieties had significant affects on larval period and fecundity of Nacoleia vulgalisNacoleia vulgalisvulgalis. while the intensity of green colour of leaves, leaf area of medium aged leaves and number of trifoliate leaves showed significant correlations with fecundity. Pilosities of older leaves and medium aged leaves, red and blue colour intensities and leaf area of young leaves did not have any significant effect on larval period and fecundity of N. vulgalis.