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首页> 外文会议>The 18th Asian-Pacific Weed Science Society Conference >EFFICACY OF NEW FOLIAR CLINCHER~R (CYHALOFOP-BUTYL) 5EC FORMULATIONS FOR CONTROL OF GRASSES IN KOREA RICE
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EFFICACY OF NEW FOLIAR CLINCHER~R (CYHALOFOP-BUTYL) 5EC FORMULATIONS FOR CONTROL OF GRASSES IN KOREA RICE

机译：新型叶面控制剂（氯氟丁菊酯）5％EC制剂对大米中草的控制作用

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Field and pot trials of new formulations of Clincher~R 5%EC were conducted to determine grass control spectrum, application timing, and dose response on rice grass weeds as a post-emergence foliar application in Korea from 1997-2000. Rates tested were from 200 to 500 g ai/ha. No phytotoxicity of Clincher 5% EC on dry seeded and water seeded rice were observed in these tests conditions. When foliar applied before flooding in dry seeded rice paddy, 250g ai/ha of Clincher 5%EC (XGA-2468) provided good to excellent control (92 to 100%) of 7-8 leaf stage ECHCG and flowering stage ALOAE until 15 days after application (DAA), with some re-growth at 30DAA. Clincher 5%EC at 400g ai/ha demonstrated excellent efficacy on ECHCG and ALOAE. No phytotoxicity to 8 leaf rice was observed with any rate tested. Under upland condition without rice, excellent post-emergence control of ECHCP at 3-4 leaf, 5-6 leaf and 7-8 leaf was achieved with rates of 250, 300 and 400 g ai/ha of Clincher 5%EC (XGA-2468), respectively. Re-growth of ECHCP was observed at lower rates. Excellent control of 3-8 Leaf of DIGSA was obtained with 500g ai/ha. Excellent control of PANBI and SETVI up to 7-8 Leaf was achieved with 500 and 300 g ai/ha of Clincher 5%EC, respectively. DIGSA was more tolerant to cyhalofop-butyl than ECHCP, and the weed susceptibility to cyhalofop-butyl was SETVI > PANBI > ECHCP > DIGSA. Under water seeded rice paddy condition in reclaimed land, excellent post-emergence control of LEFCH at 3-4 Leaf, 5-6 Leaf and 7-8 Leaf was provided by 200, 250 and 300 g ai/ha of Clincher 5%EC (XGA-2468), respectively, when applied at rice tillering stage as rescue treatment under flooded water condition. Wild rice was insufficiently controlled even at the highest dosage tested of 500g ai/ha. No visual injury to 3-4 tiller stage of water seeded rice was observed at 500 g ai/ha of Clincher 5% EC. Under dry seeded rice field conditions before flooding, Clincher 5%EC formulations with no adjuvant, PG 26-2, or RPE-8020 were compared for efficacy and rice tolerance. Performance of Clincher 5%EC formulations with PG 26-2 and RPE-8020 were equivalent and more efficacious than the Clincher 5%EC with no adjuvant. Pot trials of creeping grasses: Poor control of 3-4 leaf LERJA was seen even at 500 g ai/ha of Clincher 5% ~R EC (XGA-2469). Excellent control of both 5-7 leaf stage and 30-40 cm tall PASDA was seen with 250 g ai/ha of XGA-2469 5%EC and 50 g ai/ha of Fenoxaprop-P-ethyl EC, whereas 71 g ai/ha of Clefoxydim EC provided insufficient control at 20DAA evaluation. Some re-growth was observed at 250 g ai/ha of Clincher 5%EC and 50g ai/ha of Fenoxaprop-P-ethyl EC when applied to the 5-7 leaf stage, while rates greater than 250 g ai/ha of Clincher 5%EC providing perfect control until 100DAA. The late application at the 30-40cm tall stage of growth provided slightly better performance than the early application at 5-7 leaf stage.
机译：进行了Clincher〜R 5％EC新配方的田间和盆栽试验，以确定草控制谱，施药时间和稻草杂草在芽苗叶施用后在1997-2000年间的剂量响应和剂量响应。测试的速率为200至500 g ai / ha。在这些测试条件下，未观察到Clincher 5％EC对干种子和水种子水稻的植物毒性。在淹水的干稻田中施用叶面肥后，250g ai / ha的Clincher 5％EC（XGA-2468）可以很好地控制（92％至100％）7-8叶期ECHCG和开花期ALOAE直至15天施用后（DAA），并在30DAA时有所增长。 Clincher 5％EC（400g ai / ha）对ECHCG和ALOAE表现出优异的疗效。在任何测试速率下，均未观察到对8叶稻的植物毒性。在没有水稻的高地条件下，以250、300和400 g ai / ha的5％EC（XGA- 2468）。观察到ECHCP的重新生长速率较低。 500 g ai / ha可获得3-8个DIGSA叶片的优异对照。分别使用500和300 g ai / ha的Clincher 5％EC，可以很好地控制PANBI和SETVI直至7-8叶。 DIGSA比ECHCP更耐氯氟丁酯，而杂草对Chaloofop-丁基的敏感性为SETVI> PANBI> ECHCP> DIGSA。在开垦土地上的水播稻田条件下，通过200、250和300 g ai / ha的5％EC（Clincher 5％EC）可很好地控制LEFCH在3-4叶片，5-6叶片和7-8叶片上的出苗后控制（ （XGA-2468）分别在水稻分applied期用于淹水条件下的抢救处理时使用。即使以最高500g ai / ha的最高剂量测试，野生稻也未得到足够的控制。在500 g ai / ha的Clincher 5％EC下，未观察到对水培水稻3-4分stage期的视觉伤害。在淹水前的干稻田条件下，比较了无佐剂，PG 26-2或RPE-8020的Clincher 5％EC制剂的功效和稻米耐受性。具有PG 26-2和RPE-8020的Clincher 5％EC制剂的性能与没有佐剂的Clincher 5％EC的性能相当且有效。 creep草盆栽试验：即使在500 g ai / ha的Clincher 5％〜R EC（XGA-2469）上，也看到3-4片LERJA的控制不佳。用250 g ai / ha的XGA-2469 5％EC和50 g ai / ha的Fenoxaprop-P-ethyl EC可以很好地控制5-7叶期和30-40 cm高的PASDA，而71 g ai / ha在20DAA评估中，每公顷Clefoxydim EC的控制能力不足。当施用于5-7叶期时，在250 g ai / ha的Clincher 5％EC和50g ai / ha的Fenoxaprop-P-ethyl EC上观察到一些重新生长，而速率大于250 g ai / ha Clincher 5％EC可提供直至100DAA的完美控制。在生长高度为30-40cm的后期施用比在5-7叶期的早期施用提供了更好的性能。

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