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| Vieira,Simone Silva; Bueno,Regiane Cristina Oliveira de Freitas; Bueno,Adeney de Freitas; Boff,Mari Inês Carissimi; Gobbi,Alysson Luis. |
| Trials were carried out in Paraúna, Goiás, Brazil, to evaluate the impact of whitefly on soybean yield. The experimental design was a randomized block, with four treatments and four replications (10m x 20m). The treatments were different levels of infestation, managed by applying insecticide at different timing; the control was kept free of insects by weekly insecticide spraying. The number of insects per leaflet was evaluated weekly, and at harvest the yield (kg ha-1) and the weight of 100 seeds (g) were recorded. The soybean was tolerant to whitefly, since only the treatment where nymphs per leaflet reached 136.31±26.60 (treatment without the use of insecticides) was sufficiently severe to cause yield loss. This loss was likely associated with the sooty... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bemisia tabacii; Economic threshold; Glycine max; Soybean-IPM. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000200009 |
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| Chanasirin Klinmanee; Orak Tongdej; Wattana Posiri. |
| Integrated Pest Management (IPM) trial sets were conducted at Phatthalung, Naknon Si Thammarat and Songkhla provinces from wet season year 2011 to wet season year 2013 included 5 crops in 3 years. The data population of insect pests and natural enemies, percent damage of diseases, percent damage of animal pests, species and wet weigh of weeds, yield per rai, costs, price of yield and net benefit were collected and compared with Farmer Practice (FP) trial. The results found that IPM trial had more natural enemies than FP trial and major pests were rice thrips, green leafhoppers, rice leaffolder, zigzag leafhopper, whitebacked planthoper, rice bug, blast disease, brown spot disease, rats, golden apple snails, Leptochloa chinensis, Fimbristylis miliaceaf,... |
| Tipo: Collection |
Palavras-chave: Integrated Pest Management; Economic threshold; Production cost; Net benefit การจัดการศัตรูข้าวแบบผสมผสาน ระดับเศรษฐกิจ ต้นทุนการผลิต ผลตอบแทนสุทธิ. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5910 |
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