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Amanatillah, Niky Elfa
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Ketahanan enam galur padi sawah (Oryza sativa L) terhadap wereng batang coklat (Nilaparvata lugens Stí¥l) asal Patokbeusi, Subang : Resistance of six lowland rice lines (Oryza sativa, L .) to brown planthopper (Nilaparvata Lugens, Stí¥l.) from Patokbeusi, Subang Triwidodo, Hermanu; Nurmansyah, Ali; Sartiami, Dewi; Amanatillah, Niky Elfa; Meliyana; Lukvitasari, Luna
Jurnal Entomologi Indonesia Vol 20 No 3 (2023): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.20.3.240

Abstract

Release of new varieties requires qualitative as well as quantitative characters of the lines. For rice varieties, resistance to brown plant hopper (BPH) (Nilaparvata lugens, Stí¥l) (Hemiptera: Delphacidae) is an important character that should be tested. The purpose of this study was to determine the resistance of new rice lines of rice cultivar to BPH. In this study, the tests were carried out on 6 (six) lines of candidate varieties developed by IPB University, namely TCIPB202101, TCIPB202102, TCIPB202103, TCIPB202104, TCIPB202105, and TCIPB202106. Resistance to BPH assays was conducted by screening and population development tests. Inpari 30 and Ciherang varieties were used as controls. The results showed that the TCIPB202106 line is the most resistant to BPH attack, while the TCIPB202103 line is the most susceptible to BPH attack. The average number of nymphs in the TCIPB202106 line was three times lower than those in Inpari 30 and Ciherang. The results of the population growth test were in line with the results of the screening test which indicated that the TCIPB202106 line is classified as moderately resistant to BPH.
Rapid assessments of the rice brown planthopper (Nilaparvata lugens Stal) outbreak in Semarang District, Central Java: Effects of farmers' low KAP: Belajar dari kajian cepat ledakan wereng coklat (Nilaparvata lugens Stal) di Kabupaten Semarang, Jawa Tengah: Pengaruh dari rendahnya PST petani Triwidodo, Hermanu; Istiaji, Bonjok; Efriani, Nurul Farida; Retnowati, Lilik; Amanatillah, Niky Elfa
Jurnal Entomologi Indonesia Vol 20 No 2 (2023): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.20.2.137

Abstract

Rapid assessments on the outbreak of rice brown planthoppers (BPH) (Nilaparvata lugens Stal) were conducted to investigate the status of BPH populations and the causative factors behind the outbreak. These assessments served as the basis for developing a proper action program. The assessments took place in Banyubiru Sub-District, Semarang District covering four villages (Kebondowo, Rowoboni, Tegaron, Kebumen) in December 2013. We analyzed BPH data, along with information about farmers' practices in managing pests collected through interviews conducted in January 2018 in Indramayu. Additionally, we examined data on the number of BPH-infested areas in Java from 2010 to 2020 and the stock of insecticides in Java in 2021. Simple statistical analyses were carried out. The BPH population had spread throughout Banyubiru and was present in all sampled plots. The average number of BPH eggs ranged from 115.25 to 379.65 per rice hill, while the BPH nymphs and imagoes ranged from 3.42 to 11.87 per rice hill. The relatively low nymphs to imagoes ratio might be influenced by the high BPH predator populations, which ranged from three to six individuals per rice hill. Suspected causes of BPH resistance and resurgence included the application of banned and improper insecticides, as well as the repeated use of the same insecticide active ingredients for an extended period. It is recommended to discontinue the mass spraying of insecticides to prevent further plant damage. In 2022, the Pest Control Movement has suggested replacing chemical insecticides with biological or natural pesticides. Intensive extension programs are strongly needed.
Co-Authors ALI NURMANSYAH Bonjok Istiaji DEWI SARTIAMI Efriani, Nurul Farida Hermanu Triwidodo Lukvitasari, Luna Meliyana Retnowati, Lilik