Field Efficacy of Nicotiana tabacum L. var Virginia Extract against Coffee Borer Beetle (Hypothenemus hampei)‎ Attacking Coffee Berries in Plantation Area

الملخص EN

The extract of Nicotiana tabacum L.

var Virginia origin of Ponorogo (EHRE-Nt) was applied under field conditions against the coffee borer beetle Hypothenemus hampei (CBB).

Three extract formulations containing 150, 300, and 450 ml of EHRE-Nt in 100 liters of water were prepared and sprayed on 0.5 hectares each.

A nontreatment was applied as a control on 0.5 hectares of plantation.

The intensity of the CBB attacks was observed for six weeks on a Robusta coffee plantation in the Kalibening area, South Semarang, Central Java, Indonesia.

An extract formulation containing 450 ml of EHRE-Nt resulted in the lowest intensity of CBB attacks from weeks one to six (1.6% to 2.2%).

The attacks of the control field were 11.3% to 13.5%.

The highest efficacy level of 85.4% was obtained with the 450 ml EHRE-Nt formulation.

These results demonstrate that EHRE-Nt has potential as a bioinsecticide for coffee berries from CBB attacks.