EFFECTIVITY OF VARIOUS EXTRACTS FOR CONTROLLING BLAST DISEASE (Pyricularia oryzae) ON RICE
Ade Sugiarti Kumalasari1, Djuniarty MD2, Endah Wijayanti3

University Islamic Of Macassar

Abstract

The use of natural pesticides for controlling Plant Pest Organisms (OPT). has been done by our ancestors before the era of the green revolution which forced farmers to increase production through the supply of chemical fertilizers and pesticides. Now a days, special attention has been intensified in the development of natural pesticides to reduce the risk of environmental damage from the use of chemical pesticides. It is known that Indonesian is rich in potential biodiversity as a natural pesticide, including gadung tubers, biduri flowers, betel leaves, garlic, clove leaves, soursop leaves and so on. The rice plant is one of the priority food crops of the Ministry of Agriculture at this time, but in its development, it is experiencing problems with the attacks of several major diseases including blast disease (Pyricularia oryzae). Farmers control the disease with the use of chemical pesticides which we are aware of the negative impact on the environment. This study aims to test the effectiveness of the extract which is effective in controlling rice blast disease and can be a recommendation for control at the farmer level. The research included the preparation of P.oryzae isolates, the manufacture of extracts from 4 types of plants, namely gadung tubers, biduri flowers, piper betle leaves and garlic. Field research was carried out in Maros Regency using a randomized block design consisting of six treatments each repeated four times. Ciherang rice varieties are sown first, two weeks after planting (MST) is inoculated with P. oryzae which has been propagated on rice and rice husk media. The application of vegetable extract spraying was carried out at the age of 3 MST, 5 MST and 7 MST. The results showed that the betel leaf extract gave effective results in controlling P. oryzae

Keywords: sults in controlling P. oryzae Keywords: Natural pesticides, effectivity, Pyricularia oryzae

Topic: Integrated Pest and Disease Management