Plant Growth Regulator Selection and Application Rate Influence Annual Bluegrass Control in Creeping Bentgrass Putting Greens

Applied Turfgrass Science Pub Date : 2011-05-17 DOI:10.1094/ATS-2011-0517-02-RS

Christian M. Baldwin, A. Douglas Brede

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引用次数: 8

Abstract

Field experiments were conducted in 2009 and 2010 on two golf course practice putting greens in Spokane, WA (Esmeralda), and Hayden Lake, ID (Avondale), consisting of an approximate 50% blend of creeping bentgrass (Agrostis stolonifera L.) (CBG) and annual bluegrass (Poa annua L.) (ABG). Various regimes of trinexapac-ethyl (TE), flurprimidol (FL), paclobutrazol (PB), and TE + FL were investigated to determine which plant growth regulator (PGR) regime provided the greatest transition from ABG to CBG. Following PGR applications every two weeks over two growing seasons in the Northwest, PB at 0.28 kg/ha and FL at 0.22 and 0.28 kg/ha produced the greatest increase in CBG coverage, followed by TE + FL at 0.04 + 0.10 kg/ha. TE at 0.10 kg/ha consistently resulted in the least amount of CBG compared to other PGR treatments. While PGRs are an effective tool for superintendents to use for ABG suppression on putting greens, PGR selection, application rate, and application timing are important considerations for successful results.

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植物生长调节剂的选择和施用量对匍匐草推杆果岭蓝草年防治的影响

2009年和2010年，在华盛顿州斯波坎(Esmeralda)和爱达荷州海登湖(Avondale)的两个高尔夫球场练习果岭上进行了实地试验，试验由大约50%的匍匐匍匐草(Agrostis stolonifera L.) (CBG)和一年生蓝草(Poa annua L.) (ABG)混合组成。研究了trinexapac-ethyl (TE)、fluprimidol (FL)、paclobutrazol (PB)和TE + FL的不同配型，以确定哪种植物生长调节剂(PGR)配型能最大程度地从ABG过渡到CBG。在西北地区，每两周施用PGR，在两个生长季节中，PB水平为0.28 kg/ha, FL水平为0.22和0.28 kg/ha, CBG盖度增加最大，其次是TE + FL水平为0.04 + 0.10 kg/ha。与其他PGR处理相比，0.10 kg/ha的TE始终产生最少的CBG。虽然PGR是管理者用来抑制果岭上ABG的有效工具，但PGR的选择、施用量和施药时机是成功的重要考虑因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Applied Turfgrass Science

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