MOOL CHAND SAINI, N.K. BAJPAI AND H. K. JAIN

An investigation was conducted on the estimation of natural parasitization of maize stem borer in specialty corn viz. Madhuri (Sweet corn), HQPM–1 (QMP) and Pratap hybrid maize–1 (Normal corn) by T. chilonis in maize crop during 2009. The data recorded on parasitization showed that egg parasitization ranged from 10.94 to 34.45 per cent in Madhuri, 12.85 to 31.87 per cent in HQPM–1 and 9.0 to 29.89 per cent in Pratap hybrid maize–1 respectively. The parasitization was found in maximum in 2nd to 3rd week of August 2009 while minimum during 2nd to 3rd week of October 2009. It is also visible that all test corns were almost significantly at par and no definite trend of difference was recorded.