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Please use this identifier to cite or link to this item: http://anchan.lib.ku.ac.th/agnet/handle/001/2984

ARN: TH201100002913
Authors: Wantana Sriratanasak
Sukanya Arunmit
Jintana Chaiwong
วันทนา ศรีรัตนศักดิ์
สุกัญญา อรัญมิตร
จินตนา ไชยวงค์
Authors' affiliation: Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development
Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development
Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development
Authors' affiliation (Thai): กรมการข้าว สำนักวิจัยและพัฒนาข้าว
กรมการข้าว สำนักวิจัยและพัฒนาข้าว
กรมการข้าว สำนักวิจัยและพัฒนาข้าว
Title: สถานการณ์ระบาดของเพลี้ยกระโดดสีน้ำตาลในประเทศไทย
Brown planthopper outbreaks situation in Thailand
Corporate authors (Thai): Rice Department, Bangkok (Thailand). Bureau of Rice Research and Development
Citation: [Proceeding of 2nd Rice annual conference year 2011: Rice and national farmers' day], Bangkok (Thailand), p. 209-225
Format Extent: 375 p.
Issue Date: 2011
Language: tha
Keywords: Brown planthopper
Outbreak situation
Resistant variety
Pesticide
Outbreak
Subject Classification(ASC): H20
AGROVOC: Oryza sativa
Nilaparvata lugens
Varieties
Pest resistance
Biodiversity
Pesticides
Pest control
Abstract: Brown Planthopper, Nilaparvata lugens is an important insect pest of irrigated rice areas in central and lower northern region of Thailand. The interviews of farmers in the outbreak areas of 6 provinces, Phitsanulok, Chai Nat, Ang Thong, Suphan Buri, Nonthaburi and Nakhon Nayok during the wet season of 2010 found that the majority of the rice variety grown in the severe outbreak areas (Suphan Buri, Ang Thong and Chai Nat provinces) was Pathum Thani 1 (28-70%). Whereas in non severe outbreak areas (Phitsanulok, Nonthaburi and Nakhon Nayok provinces) about 26-75% of the farmers grew Phitsanulok 2 and RD31 varieties. At that time, farmers in the outbreak areas applied insecticides which were hazardous to living organisms in the rice ecosystem namely abamectin and cypermethrin both in form of single and mixed applications. Mixed insecticides (38.4%) which composed of 2-6 types of pesticides were applied higher than single insecticide (26.06%). They also applied insecticides which induced resurgence of the BPH population. From this interviewing results, the efficacy of recommended insecticides and resistance monitoring of the outbreak populations were determined. The results showed that under the massive BPH outbreaks situation, most of recommended insecticides are not effective. Although the yield had a statistical difference from unsprayed plot but the return was uneconomical. The farmers had to spray as high as 3 times per crop in order to protect their plants and keep the rice yield of about 100-110 kg/rai. In addition, most of the BPH populations showed resistant to recommended insecticides such as fenobucarb, imidacloprid, clothianidin, thiamitoxam, ethiprole and dinotefuran. Besides that, BPH population collected from 75-81 location in 16 provinces could feed on not only the rice varieties which carry resistant gene Bph1, bph2, Bph3 and bph4 but also the certified varieties namely RD23, RD29, CNT 1, PTT 1, SPR 1, SPR 3, SPR 60, SPR 90 and PSL 2. Occurrences of massive BPH outbreaks may result from the genetical diversity of the BPH even in the same population. The intrinsic factor of the insect itself then causes the continue outbreak of the BPH. However the severity of the outbreaks can be stimulated by farmer’s pesticide application behaviors.
Right: ลิขสิทธิ์เป็นของเจ้าของบทความแต่เพียงผู้เดียว
สงวนลิขสิทธิ์ตามพระราชบัญญัติลิขสิทธิ์ พ.ศ. 2537
เอกสารนี้สงวนไว้สำหรับการใช้งานเพื่อการศึกษาเท่านั้น ไม่อนุญาติให้นำไปใช้ประโยชน์ด้านการค้า ไม่ว่ากรณีใดๆ ทั้งสิ้น อีกทั้งห้ามมิให้ดัดแปลงเนื้อหา และต้องอ้างอิงถึงเจ้าของเอกสารทุกครั้งที่มีการนำไปใช้
Type: Collection
Format Extent: 375 หน้า
Availability : Library of Bureau of Rice Research and Development, Rice Department;
Availability: ห้องสมุดสำนักวิจัยและพัฒนาข้าว กรมการข้าว;
Appears in Collections:Rice Department

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