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| Registros recuperados: 26 | |
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| Sukanya Arunmit; Wantana Sriratanasak; Jintana Chaiwong. |
| Brown planthopper (BPH), Nilaparvatar lugens (Stål) is an important insect pest of irrigated rice cultivation areas in lower north, central and northeast Thailand. The field experiments were conducted to evaluate the efficacy of nine insecticides include buprofezin 25% WP, buprofezin 5% + isoprocarb 20% WP, etofenprox 20% EC, ethiprole 10% SC, dinotefuran 10% WP, pymetrozine 50% WG, sulfoxaflor 50% WG, carbosulfan 20% EC and clothianidin 16% SG to control BPH in farmers’ fields at Suphan Buri, Nakhon Nayok and Ubon Ratchathani provinces. The results showed that the sulfoxaflor 50% WG and pymetrozine 50% WG which are new class insecticides, were the most effective insecticides that showed BPH control efficacy of 40-80% whilst the other insecticides which... |
| Tipo: PhysicalObject |
Palavras-chave: Sulfoxaflor; Pymetrozine; New class insecticide; Brown planthopper; Mirid bug; Toxicity value; LC50; สารเคมีป้องกันกำจัดแมลง; เพลี้ยกระโดดสีน้ำตาล; มวนเขียวดูดไข่; ค่าความเป็นพิษ; LC50. |
| Ano: 2015 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5956 |
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| Apichat Seiyot; Jintana Asurin; Wantana Sriratanasak. |
| Insect survey using light traps and the field survey for collecting insect pests and natural enemies were conducted at Surin Rice Research Center during February 2014 to January 2015. The main objective of this study was to investigate the correlations between environmental factors and numbers of insect pests and natural enemies. The results revealed that rainfall, temperature and relative humidity were slightly correlated with numbers of insect pests and natural enemies. Additionally, number of pests was negatively correlated with number of natural enemies. Negative correlations were observed between number of parasitic wasps and numbers of white backed planthoppers, brown planthoppers, green leafhoppers and zigzag leafhopper. Number of orange ladybugs... |
| Tipo: Collection |
Palavras-chave: Insect pests; Natural enemies; Light trap; แมลงศัตรูข้าว; แมลงศัตรูธรรมชาติ; กับดักแสงไฟ. |
| Ano: 2015 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5867 |
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| Sukanya Arunmit; Wantana Sriratanasak; Jintana Chaiwong. |
| The brown planthopper (BPH), Nilaparvata lugens (Stål), is one of the most serious insect pest of irrigated rice in the central and lower areas of Northern Thailand. In upper North of Thailand, the first and serious outbreak was found during year 2011 and 2012. The misused insecticide over a period of time with extensive and intensive application is causing BPH outbreak. Therefore, the goal of this research was to monitor the insecticide resistance of BPH in the Northern, Thailand. BPH were collected from 12 outbreak fields of the Northern region namely: Chiang Rai, Chiang Mai, Mae Hong Son, Nan, Phrae, Tak, Phetchabun, Kamphaeng Phet, Phitsanulok, Phichit, Nakhon Sawan and Uthai Thani between the periods of 2010 to 2012. The toxicological tests (LD50) of... |
| Tipo: Collection |
Palavras-chave: BPH; Brown planthopper; Insecticide resistance; Toxicology test; Outbreak area; Northern; Rice; ข้าว; เพลี้ยกระโดดสีน้ำตาล; ความต้านทานต่อสารเคมีป้องกันกำจัดแมลง; ค่าความเป็นพิษ; พื้นที่ระบาด; ภาคเหนือ. |
| Ano: 2013 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5531 |
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| Registros recuperados: 26 | |
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