On The Control Of Blast Disease In Some Hybrid Rice Varieties With Piper Caninum Extracts Combined With Organic Fertilizer

Rice plants are the main staple food crop in the form of rice consumed by most of the Asian population. Rice cultivation has been very dependent upon the use of synthetic chemical fertilizers and pesticides of which they are potential to have a negative impact on both human health and the environment. Continuous efforts need to be made to develop natural fertilizers and pesticides to support the development of organic agriculture and sustainable farming systems. This study aims at determining the efficacy of the use of vegetable pesticides which are active ingredients of Piper caninum extract combined with the use of compost and liquid organic fertilizer on the intensity of blast disease in 3 (three) rice varieties. This study was a randomized block design (RBD) field study using 3 (three) rice varieties namely red Pb variety (V1), Pb5 variety (V2), and Pb Legowo variety (V3). The results of the study on plant age 8 weeks after planting showed that the lowest intensity of blast disease was 27.16% indicated by Pb 5 variety, followed by Pb Legowo variety of 27.76%, and the highest was in the Red Pb varieties which was 32.6%. The intensity of blast disease at the lowest age 12 weeks after planting was also shown by the Pb5 variety, followed by Pb Legowo, and the highest in the Red Pb varieties. The highest yield (7.8 tons / ha) was found in Pb5 varieties, followed by Pb legowo varieties (7.5 tons / ha) and red Pb (6.2 tons / ha). It can be concluded that the Pb5 variety is the most resistant to blast disease and has the highest production capability. Keywords: Piper caninum extract, organic fertilizer, blast disease