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Response of zoysiagrass cultivars to preemergence herbicides.

机译:结缕草品种对出苗前除草剂的反应。

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摘要

Field experiments were conducted over a 2-year period (1993-94) in Georgia, USA, to evaluate tolerance of two zoysiagrass (Zoysia spp.) cultivars to several preemergence herbicides. During April, May, and June, cv. Meyer maintained a higher qualityrating (7.5) than Korean common (6.9) when herbicide treatments were disregarded. None of the preemergence herbicides applied at recommended and twice the recommended rate reduced the quality of Meyer zoysiagrass at any time and Korean common zoysiagrassduring April and May, when compared with untreated turf. However, by late June, the quality of Korean common was lower in plots treated with benefin [benfluralin] plus oryzalin at _3.4+3.4 kg ha-1, oryzalin at _6.7 kg ha-1, and dithiopyr (EC) at 1.6 kgha-1, and dithiopyr (G) at _1.6 kg ha-1 than in untreated plots. None of the preemergence herbicides affected the density of either cultivar throughout the spring.
机译:在美国佐治亚州进行了为期2年(1993-94年)的田间试验,以评估两种结缕草(Zoysia spp。)品种对几种出苗前除草剂的耐受性。在4月,5月和6月,简历当不考虑除草剂处理时,Meyer的质量(7.5)高于韩国普通水平(6.9)。与未经处理的草皮相比,在任何时候都不会以推荐的施用除草剂和两倍的推荐施用量的除草剂会降低梅耶和日本普通草在4月和5月间的质量。但是,到6月下旬,在使用美沙芬[benfluralin] +谷氨酰胺(_3.4 + 3.4 kg ha-1),谷氨酰胺(_6.7 kg ha-1)和二硫代(EC)处理的地块中,韩国普通鲤的质量较低。 1.6 kgha-1,和在未处理地块_1.6 kg ha-1下的二硫代吡啶(G)。整个春季,任何一种出苗前的除草剂都不会影响任一品种的密度。

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