Aphid sucks the vital nutrients of the plant sap from the
different parts like lower surface of leaf, stem, tender branches, and
inflorescence of the plant. This impairs the normal growth of the crop plants
and thus reduces the crop production. The Midges (Endaphis aphidimyza) act on
the Aphids and reduce their population and thus relieve the crop plants from
the ill effects of aphids. This paper presents results of a study on the
effects of seasonal factors on different
stages of the life cycle of Midges and their population. The
climatic factors have been assessed on the aphid population. Statistical
analysis has revealed that the partial regression coefficient of temp (x1 0C)
and pupal period (y) has negative and significant effect i.e. (b1 = -0.295), on
10 change in temperature decreases this period by -0.295. Similarly humidity
(x2) has positive but highly significant result (b2 =0.104). The resultant
effect of rainfall (b3 = 0.025) though positive but
non-significant and the wind velocity adversely affects the pupal period (b4 = -0.00104). The total variation explained by all the independent variables x1, x2, x3 and x4 came out to be 71.2 per cent. Obviously, Zoophagous appears to be ecofriendly organism.
Please read full article –https://globalpresshub.com/index.php/BN/
Keywords: Endaphis aphidimyza, Ecofriendly gallmidge, Pupal period of Cecidomyiids, Zoophagous, Cecidomyiids
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