Pesticidal Activity of Spent Coffee Grounds Extract on Rice Black Bugs (Scotinophara coarctata)

Authors

  • Jillian DL. Valeriano

Keywords:

coffee grounds, rice blackbugs, pesticidal activity

Abstract

Rice Black Bugs (Scotinophara coarctata) is one of the most difficult to manage insect-pest in the Philippines. Therefore, an investigation of their control measures is now of considerable interest. This study highlighted the pesticidal activity of spent coffee grounds against S. coarctata. The spent coffee grounds extract were obtained using ethanoic extraction and concentrated in a rotary evaporator. The different concentrations of the extract were prepared. Percentage mortality was determined after treatment application through spraying. There were three replicates per treatment,and each replicate has five black bugs. Results revealed that 50% and higher concentrations of the extract showed 100% mortality while 25% of extract had 86.67% mortality. These results suggest that the extract of spent coffee grounds has pesticidal property against rice blackbugs. Thus, spent coffee ground extracts is feasible to develop an eco-friendly, effective and cheaper pesticide to address the problems of rice blackbugs. 

Published

2018-05-18