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All Journal SOCA: Jurnal Sosial Ekonomi Pertanian
Chiharu Hongo
Center for Environmental Remote Sensing, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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The Observation of Blast Disease and Its Effect to Rice Yield Using Existing Assessment Method to Support the Indonesian Agriculture Insurance I Putu Sudiarta; I Komang Candra Giri Prayoga; I Gede Rai Maya Temaja; Gusti Ngurah Alit Susanta Wirya; Masahiro Shishido; Chiharu Hongo
SOCA: Jurnal Sosial Ekonomi Pertanian Vol 15 No 2 (2021): Vol.15, No.2, 2021
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Udayana Jalan PB.Sudirman Denpasar, Bali, Indonesia. Telp: (0361) 223544 Email: soca@unud.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SOCA.2021.v15.i02.p15

Abstract

One of the causes for the low productivity of rice in Indonesia is the occurrence of rice blast disease. Blast disease is one of the main diseases of rice plants around the world. Therefore to minimise the risk of the lost yield by blast disease, the Ministry of Agriculture of the Republic of Indonesia has the agriculture insurance program. To support these program, the research about observations of blast disease in a fixed location are needed. The objective this research is to confirm pathogens causing the blast disease in the fields, to determine the development of blast disease and its effect to the rice yield (grain weight and straw weight). The study was conducted in a fixed paddy field at Subak Uma Dalem, Sobangan Village, Mengwi District, Badung Regency, Bali Province from February 2019 to April 2019. The data showed that the disease incidence of rice blast increased every week starting from 1st week (28 DAT) until 10th week (104 ATP). Our study confirmed that the fungus caused the blast disease in the field was Magnaporthe oryzae. The higher incidence of blast disease in the field resulted reduced the rice yield by decreasing both grain and straw weights.
The Existing Method to Assess the Disease Incidence of Bacteria Leaf Blight and Its Effect to Rice Yield to Support the Indonesian Agriculture Insurance Gusti Ngurah Alit Susanta Wirya; Made Satya Andrayuga; I Putu Sudiarta; Masahiro Shishido; Chiharu Hongo
SOCA: Jurnal Sosial Ekonomi Pertanian Vol 15 No 3 (2021): Vol.15, No.3, 2021
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Udayana Jalan PB.Sudirman Denpasar, Bali, Indonesia. Telp: (0361) 223544 Email: soca@unud.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SOCA.2021.v15.i03.p19

Abstract

Bacterial leaf blight (BLB) has become a major obstacle and a limiting factor in national rice production. Basically, this disease is caused by the bacterium Xanthomonas oryzae pv. oryzae. Therefore, to minimize the risk of disease infection to yield lost; The Ministry of Agriculture of the Republic of Indonesia has the agriculture insurance program. To support the program, the observations of disease incidence of the disease using existing method are needed. The purpose of this study was to determine the development of bacterial leaf blight on rice plants in Subak Munggu and to determine the effect of bacterial leaf blight on the yield of rice plants. Research activities included (1) isolation of pathogens from symptomatic leaves of rice plants, (2) weekly observations (3) morphological identification of pathogens (4) yields analysis. The results of this study showed the development of bacterial leaf blight in Subak Munggu, Munggu Village, Mengwi Sub-district, Badung Regency for ten weeks. The yield by calculating the weight of grains in each plot was calculated, it can be concluded that a sample that showed a high percentage of disease at the harvest time will cause the low grain yield production.
Co-Authors Gusti Ngurah Alit Susanta Wirya I G. R. M. TEMAJA I Komang Candra Giri Prayoga Made Satya Andrayuga Masahiro Shishido Putu Sudiarta