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Herbicide Resistance to pyrazosulfuron-ethyl of gooseweed (Sphenoclea zeylanica Gaertn.) in Thai paddy fields |
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| รหัสดีโอไอ | |
| Creator | Jarunya Pinsupa |
| Title | Herbicide Resistance to pyrazosulfuron-ethyl of gooseweed (Sphenoclea zeylanica Gaertn.) in Thai paddy fields |
| Contributor | Narupon Rakkhayan, Choosak Kunuthai, Pairoh Khwanngam, Suphannika Intanon |
| Publisher | Faculty of Agriculture |
| Publication Year | 2569 |
| Journal Title | Khon Kaen Agriculture Journal |
| Journal Vol. | 54 |
| Journal No. | 1 |
| Page no. | 107-119 |
| Keyword | broadleaf weed, herbicide, herbicide resistant weed, cross resistance, paddy fields |
| URL Website | https://li01.tci-thaijo.org/index.php/agkasetkaj |
| Website title | Khon Kaen Agriculture Journal |
| ISSN | 3027-6497 (Online) |
| Abstract | Gooseweed (Sphenoclea zeylanica Gaertn.) is a problematic weed in paddy fields. Most farmers use herbicides to control gooseweed such as acetolactate synthase enzyme (ALS) inhibiting herbicides and auxin mimics herbicides. The farmers reported that pyrazosulfuron-ethyl cannot control suspected resistant gooseweed populations in the rice field. This study aimed to survey the occurrence of pyrazosulfuron-ethyl resistant gooseweed in 100 populations across Thai rice fields, investigate the level of pyrazosulfuron-ethyl resistance, and evaluate alternative chemical control of pyrazosulfuron-ethyl resistant gooseweed populations. Pyrazosulfuron-ethyl-resistant gooseweed was identified in 52 rice fields (52%). Across different regions, the cluster of pyrazosulfuron-ethyl-resistant was greater observed in Central region of Thailand than the North and the Northeast areas. GR50 based on plant dry weight for pyrazosulfuron-ethyl-resistant from Ang Thong (P22) and Phra Nakhon Si Ayutthaya (P43) provinces were 33.36 and 19.18 g ai/rai which were 111.2 and 63.93 times greater than for the susceptible population from Surin province (P54; GR50 = 0.3 g ai/rai), respectively. Cross resistance to other ALS-inhibiting herbicides was found to bispyribac-sodium in P22 and P43 populations. However, propanil, carfentrazone-ethyl, and 2,4-D provided effective control of the two pyrazosulfuron-ethyl-resistant gooseweed populations. It could possibly suggest these herbicides in combination with other non-chemical weed control methods to manage pyrazosulfuron-ethyl-resistant gooseweed populations in rice fields. |
