USE OF SERAI STEM ASH FOR CONTROLLING THE RICE WEEVIL Sitophilus oryzae L.

By: Herminanto
Agro Technology Study Program Faculty of Agriculture UNSOED
Po Box 125 Purwokerto 53101; e-mail: Hermin06@gmail.com

ABSTRACT
A research has been conducted by aims to know emergence of new adults, size, and attack by the rice weevil Sitophilus oryzae on various rice varieties in storage; effects of serai stem ash on mortality emergence of new adults; effects of the serai stem ash on reduction in damage and weight of rice in storage. Results performed that the pest was mostly damaging and causing high weight reduction on the local red rice. It also caused the most numerous adults and shortest emergence on such rice. The serai stem ash in higher doses increased the mortality; the LD50 was 12.05 g/100 g of rice. The high dose of it decreased number of emerged adults, damage and weight reduction in rice, and caused slow development of the pest as well.
Key words: Sitophilus oryzae, serai stem ash.
(full text is available on request)