Field experiments were conducted in Texas to examine the recovery of abermudagrass [Cynodon dactylon × C. transvaalensis (L.) Pers.] fairway fromspring dead spot (SDS) disease following preemergence (PRE) herbicideapplications. In 2011 and 2012 bermudagrass recovery from SDS in the nontreatedcheck plots (46 and 59%, respectively) was similar to bermudagrassrecovery in response to oxadiazon at 3.4 kg/ha (55 and 57%, respectively) 14weeks after treatment (WAT). Pendimethalin at 2.5 kg/ha resulted in 33 to 38%bermudagrass recovery from SDS 14 WAT. In 2011, oryzalin (1.68 kg/ha),dithiopyr (0.56 kg/ha), prodiamine (0.73 kg/ha), and dimethenamid (1.68 kg/ha)applications resulted in 21 to 25% bermudagrass recovery from SDS 14 WAT. In2012, bermudagrass exhibited similar recovery in response to prodiamine andoryzalin (24 and 26%, respectively), while response to dithiopyr anddimethenamid was 33 and 34%, respectively, 14 WAT. Bermudagrass exhibitedthe least amount of recovery (13 to 14%) in response to indaziflam at0.035 kg/ha, regardless of year. Oxadiazon can be safely used as a PRE optionwhen bermudagrass is recovering from SDS, while the use of oryzalin, prodiamine,dithiopyr, dimethenamid, pendimethalin, and indaziflam may limit recovery andfurther contribute to a weakened turfgrass system.
展开▼
机译：在德克萨斯州进行了野外试验，以研究芽前（PRE）除草剂施用后从春季死斑（SDS）病害中获得的赤柏草（Cynodon dactylon×Transvaalensis（L.）Pers。）球道的恢复。在2011年和2012年，未经处理的检查地块中SDS的百慕大草回收率（分别为46％和59％）与在治疗后14周（WAT）以3.4公斤/公顷的奥沙地松对百慕大草的回收率相似（分别为55％和57％）。 2.5 kg / ha的二甲戊乐灵从SDS 14 WAT中回收了33％至38％的百慕大草。 2011年，施用稻草素（1.68千克/公顷），二硫代吡啶（0.56千克/公顷），丙二胺（0.73千克/公顷）和苯二甲酰胺（1.68千克/公顷）施用后，从SDS 14 WAT中回收了21％至25％的百慕大草。 2012年，百慕大草对丙二胺和米扎林的反应相似（分别为24％和26％），而对二硫代吡咯和二甲烯胺的反应分别为14 WAT的33％和34％。不论年份如何，百慕大对0.03 kg / ha的吲哚并flam起的恢复量最少（13％至14％）。当百慕大草从SDS中恢复时，草酸重氮可以安全地用作PRE的选择，而使用米杂草素，丙二胺，二硫代吡咯，二甲烯胺，戊二甲灵和吲达唑火焰的使用可能会限制回收率，并进一步削弱草皮草系统。
展开▼
