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首页> 外文期刊>Journal of Turfgrass Management >Frequency of Mowing and Plant Growth Regulators to Suppress Common Bermudagrass
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Frequency of Mowing and Plant Growth Regulators to Suppress Common Bermudagrass

机译：修剪和植物生长调节剂抑制普通百慕大草的频率

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A field experiment was conducted to evaluate plant growth regulators (PGRs) and mowing frequency for suppression of vegetative growth and seedhead development of common bermuda-grass [Cynodondactylon (L.) Pers.]. Imazethapyr {2-[4,5-dihydro-4-meth-ic acid} appfied at 0.06 kg ha~(-1) in each of two applications suppressed vegetative growth for five weeks when compared with untreated check. Turf treated with imazethapyr required two mowings during the next two weeks during 1990 and one mowing duringthe same period during 1991. Imazethapyr at 0.03 kg ha~(-1) applied in each of two applications plus one mowing at six weeks effectively suppressed common bermudagrass seedheads for seven weeks. Imazethapyr reduced turf quality within three weeks aftertreatment but the turf recovered by five weeks with no stand loss. Mefluidide {N-[2,3-di-methyl-5-[[(trifluoromethyl)sulfonyl]amino]phenyl]acetamide} applied at 0.6 kg ha~(-1) in each of two applications plus 2 to 3 mowings resulted in acceptable seedhead suppression of common bermudagrass while turf mowed three times without mefluidide did not Neither flurprimi-dol { α-( 1 -methylethyl)-α-[4-(trifluoromethoxy )phenyl]-5-pyrimidine-methanol) (one application at 1.1 kg ha~(-1) or two applications at 0.8 kg ha~(-1)) nor paclobutrazol { ( ± )-(R~*R~*)β-[(4-chlorophenyl)methyl]-α-( 1 , l-dimethylethyl)-lH-l,2,4-triazole-l-ethanol} (1.1 kg ha~(-1) applied in one or two applications) suppressed seedheads of common bermudagrass and 3 to 4 timely mowingswere required to maintain a high quality turf during seven-week period after PGR treatment. Imaze-thapyr suppressed vegetative growth and seedheads of common ber-mudagrass more than mefluidide, flurprimidol, flurprimidol plus me-fluidide, and paclobutrazol. Turf treated with imazethapyr required two less mowings than other PGRs to maintain a high quality turf during the seven-week period following treatments.
机译：进行了田间试验，以评估植物生长调节剂（PGR）和修剪频率，以抑制普通百慕大草[Cynodondactylon（L.）Pers。]的营养生长和种子头发育。与未经处理的对照相比，两次施用中的每一种都以0.06 kg ha〜（-1）施用依马西吡{{2- [4,5-二氢-4-甲基酸}}抑制植物生长五周。接受咪唑乙草胺处理的草皮在1990年的接下来两周需要割草，而在1991年同期则需要割草。咪唑乙草胺以0.03 kg ha〜（-1）施用两次，每6周一次割草有效抑制了普通百慕大草的种子七个星期。咪唑乙草胺在治疗后三周内降低了草皮质量，但草皮恢复了五周而没有失稳。以0.6 kg ha〜（-1）的比例在两次施用中分别加用2-3片割草的Mefluidide {N- [2,3-二甲基-5-[[（（三氟甲基）磺酰基]氨基]苯基]乙酰胺}草坪草修剪了三遍而未使用甲氟丁草胺时，对普通百慕大草的可接受的种子头抑制作用都没有kg ha〜（-1）或两次以0.8 kg ha〜（-1）施用）或多效唑（{±）-（R〜* R〜*）β-[（4-氯苯基）甲基]-α-（1 （1-二甲基乙基）-1H-1,2,4-三唑-1-乙醇}（1.1 kg ha〜（-1）施用一次或两次）抑制了普通百慕大草的种子头，需要维持3至4次及时修剪PGR处理后的7周内是高质量的草皮。依马西坦比美氟肽，氟草定醇，氟哌啶醇加甲氟啶和多效唑更能抑制普通柏草的营养生长和种子头。用咪唑乙烟草处理过的草皮，与其他PGR相比，修剪后所需的割草次数要少两个，以在治疗后的7周内维持高质量的草皮。

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