Efek Penggunaan Metabolit Sekunder Trichoderma harzianum terhadap Penyakit Busuk Buah Phomopsis, Hama Perusak Daun Epilachna, dan Hasil Tanaman Terung

Abstract

Efforts to increase eggplant productivity are often constrained by plant damage by phytopathogens and pests. The use of secondary metabolites which are the result of the metabolism of biological agents for the control of phytopathogens and destructive pests in plants, and this is an environmentally friendly control measure. This study aimed to examine the use of secondary metabolites of Trichoderma harzianum to control fruit rot disease Phomopsis vexans and leaf destroying pests of Epilachna sp., and to increase eggplant yield. The treatments tried were secondary metabolites with concentrations of 0%, 10%, 20% and 30%. The results showed that treatment of secondary metabolites of T. harzianum suppressed fruit rot disease Phomopsis, but had no effect on leaf damage by Epilachna. Treatment with a concentration of 10%, 20% and 30% respectively can reduce the intensity of the disease 51.65%, 64.25% and 69.63%. Leaf damage by Epilachna sp. was classified as mild for all concentration levels, ranging from 3.65 to 4.32%. Treatment of T. harzianum secondary metabolites with various levels of concentration affected on the fruit length, but did not affect on number of fruit, fruit diameter, and fruit weight.