Application of the local entomopathogenic fungus Beauveria Bassiana Vuill against larvae Oryctes rhinoceros L. in immature oil palm plants in Sei Siasam, Rokan Hulu Regency, Riau Province, Indonesia

Abstract

The decline in oil palm production can be caused by pest attacks. The main pest that attacks oil palm is the horn beetle. Control is usually done by using chemical pesticides. The use of chemical pesticides can cause resistance, resurgence, destruction of natural enemies, and environmental pollution. The use of chemical insecticides can be minimized by using environmentally friendly and sustainable control alternatives, namely by using the local entomopathogenic fungus B. bassiana. This study aimed to obtain the best dose of local B. bassiana Vuill in controlling O. rhinoceros larvae in immature oil palm plantations in Sei Siasam, Rokan Hulu Regency, Riau Province. The study was carried out in Sei Siasam, Rokan Hulu Regency and the Plant Pest Laboratory, Faculty of Agriculture, University of Riau. Completely Randomized Design with five treatments doses of local entomopathogenic fungus B. bassiana 30 g/hole, 35 g/hole, 40 g/hole, 45 g/hole, 50 g/hole and four replications, in order to get 20 experimental units. The results showed that the application of local Riau B. bassiana at a dose of 40 g/hole was the best dose capable of causing death of 72.5%. Early death 77 hours after application and Lethal time 50 180.75 hours after application.

Isolation, molecular characterization, and virulence assays of entomopathogenic fungi of Oryctes rhinoceros larvae from Asahan origin

“…Controls technique that is widely used by farmers generally uses synthetic insecticides. Pest control that prioritizes the use of synthetic insecticides is ineffective, unsustainable, and results in various negative impacts [10]. The negative impact of the use of synthetic insecticides such as resistance, pest resurgence, killing of natural enemies, increasing of residue on yield, environmental pollution, and health problems for users [10].…”

Application of Various Concentrations of Mixed Extracts of Calotropis gigantea and Crescentia cujete Against Population and Attack Intensity of Leptocorisa acuta, Nephotettix virescens and Natural Enemy Populations of Rice Plants

“…To control pests, farmers usually use synthetic pesticides. As a result, resistance, resurgence, death of natural enemies and of course can cause environmental pollution, because levels of synthetic pesticide residues can increase and kill organisms in the food chain [5,6,7]. Very few pesticides used after DDT have long environmental half-lives, and none of them bioaccumulate in the same way as organochlorines did.…”

“…C. gigantea has been used as an insecticide [4,5], medicinal plant [16], molluscacide, fungicide, and nematicide [17] because C. gigantea contains flavonoids, tannins, cardiac glycosides, and terpenoids [18]. Secondary metabolites of this plant can cause ovicidal effects [8,9], oviposition deterrent [21], larvicidal and repellent [22] for insects.…”