Record of clover cyst nematode Heterodera trifolii Goffart, 1932, from Nilgiris Tamil Nadu, Its distribution and morphometrics

Abstract

The clover cyst nematode Heterodera trifolii has been recorded on white clover Trifolium repens from Nilgiri hills, Tamil Nadu. It was observed only at high altitudes of Nilgiris at an altitude above 2500 mSL. The cyst counts ranged from 42-186 cysts/ 200 cc soil. H.trifolii was observed only on white clover and other legumes and non legumes were found free from infestation. The morphometric studies indicate the variations in the morphological features are minimum in respect of juveniles, white females and cysts, as compared to the original description by Goffart, 1932 [2].