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Effect of Soil Type and Liming Rates on Rotational Forage Crop Injury Following Metsulfuron Methyl

机译：甲磺隆对土壤类型和覆土速率对旋转饲草作物伤害的影响

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Solution pH from 6.0 to 8.0 did not affect the germination of Italian ryegrass, 'Pensacola bahiagrass,' or common bermudagrass grown in petri dishes in growth chambers. Seeding intervals following metsulfuron methyl application varied from species to species and between soil types. Greenhouse studies indicated that in an Okolona silty clay, common bermudagrass should not be planted until 12 wk after metsulfuron methyl application. Italian ryegrass showed no metsulfuron methyl injury at the 6-wk sampling date when no lime was added, indicating reseeding was feasible at this time; however, a 12-wk time interval was not sufficient when lime was applied. Pensacola bahiagrass was injured when reseeded at 12 wk, regardless of liming rate. In a Prentiss fine sandy loam soil, common bermudagrass could be reseeded 12 wk after application when no lime was added, but not when lime was added. Italian ryegrass and Pensacola bahiagrass should not be reseeded for at least 12 wk, regardless of lime rate. Field experiments, where metsulfuron methyl was applied to the field and seeding was carried out in the greenhouse, indicated on the Okolona silty clay that common bermudagrass reseeding could occur at all liming rates after 3 wk, and Italian ryegrass and Pensacola bahiagrass after 6 wk. In the Prentiss fine sandy loam, common bermudagrass reseeding could occur at 3 wk, regardless of lime rate. Italian ryegrass emergence was not affected when reseeded immediately after metsulfuron methyl application, but height was reduced for longer periods, and increased lime rate lengthened this interval. Pensacola bahiagrass reseeding was feasible at 3 wk.
机译：pH从6.0到8.0的溶液不会影响意大利黑麦草，'Pensacola bahiagrass'或在生长室内培养皿中生长的普通百慕大草的发芽。甲磺隆施用后的播种间隔因物种而异，并且在土壤类型之间也不同。温室研究表明，在Okolona粉质粘土中，在施用甲磺隆后12 wk之前不应该种植普通的百慕大草。在不添加石灰的情况下，意大利黑麦草在6周采样日未显示甲磺隆甲基伤害，表明此时可以重新播种。然而，当使用石灰时，12周的时间间隔不足。 Pensacola bahiagrass在12 wk播种时受伤，而无论撒播速率如何。在Prentiss细砂质壤土中，不加石灰但不加石灰时，普通百慕大草可在施药后12周重新播种。无论石灰用量如何，意大利黑麦草和Pensacola bahiagrass均不得至少播种12周。在田间试验中，将甲磺隆用于田间并在温室中进行播种，在Okolona粉质粘土上表明，在3周后所有浸种速率下都可能发生普通百慕大草的播种，而在6周后意大利黑麦草和彭萨科拉·巴伊格拉斯（Pensacola bahiagrass）会发生播种。在Prentiss细砂质壤土中，无论石灰速率如何，普通的百慕大草播种都可能在3周发生。在施用甲磺隆后立即播种时，意大利黑麦草的出芽并没有受到影响，但是高度降低了更长的时间，并且石灰速率的增加延长了该间隔。 Pensacola bahiagrass重播在3周是可行的。

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