author(s)
SC Shinthiya and T Abdul Razak

abstract
The present investigation deals to evaluate the effect of sweet flag, Acorus calamus L. a tall perennial wetland monocot plant from the Acoraceae family against sucking insect pests of brinjal in agricultural college and research institute, killikulam during the year of 2014-2015. Aqueous rhizome extract recorded the lowest mean population of aphids (9.28) in brinjal followed by rhizome powder (14.14). Aqueous rhizome extract 1% recorded a mean population of 70.29 percent reduction over control on leaf hopper. However the chemical check chlorpyriphos performed far better with fruit damage (1.78%) than the A. calamus products.