TEKNIK PENGENDALIAN SERANGGA HAMA WALANG SANGIT (Leptocorisa oratorius) MELALUI PENYEMPROTAN LARUTAN BEUVERIA BASSIANA UNTUK TANAMAN PADI

Abstract

Rice ear bug is one of the factors causing rice growth failure. This research aims to increase the rice ear bug’s mortality number using extract liquid from a biological agent Beuveria bassiana at various concentration levels. Beauveria bassiana liquid sprayed on rice ear bugs in a net type hood on rice plant clumps. The dosage of beuveria bassiana extracts mixed into the water at ratios in 2 ml/L, 5 ml/L, 8 ml/L, and 10 ml/L. The result shows that the best-used dosage in controlling the bug is 10 ml of Beuveria bassiana extract liquid in 1 liter of water. It is shown from the percentage of rice ear bug’s mortality, which is the highest (76.92%) for 12 days of observation. Meanwhile, using a dosage of 10 mL/L shows the physical change of the bug’s dead body. The fungus appears on the whole bug’s dead body. The fungus spreads from day 8 of observation while the dosages of 8 mL/L and 10 mL/L are used. Moreover, the lowest mortality percentage is 28.57%, while 2 mL/L dosages are used for 12 days.

Keywords

• beuveria bassiana extract liquid
• biological agent
• rice ear bug
• paddy rice