author(s)
Shivbhagvan, VS Acharya and Raj Kumar Meena

abstract
The experiment was carried out at SKRAU, Bikaner (Raj.) in the year 2015-16. In the present study a significant difference was found between number of healthy fruits, number of infested fruits, level of infestation in fruits on number and weight basis and marketable yield of protected and unprotected plots. The average fruit yield per tree of protected plots was 36.41 kg per tree while the average fruit yield of unprotected plots was only 15.68 kg per tree. The loss in yield caused by ber fruit fly, Carpomyia vesuviana was 56.93 per cent in unprotected trees as compared to protected trees.