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篇目详细内容 |
【篇名】 |
Growth responses of Kentucky bluegrass (Poa pratensis L.) to trinexapac-ethyl applied in spring and autumn |
【刊名】 |
Frontiers of Agriculture in China |
【刊名缩写】 |
Front. Agric. China |
【ISSN】 |
1673-7334 |
【EISSN】 |
1673-744X |
【DOI】 |
10.1007/s11703-009-0038-6 |
【出版社】 |
Higher Education Press and Springer-Verlag |
【出版年】 |
2009 |
【卷期】 |
3
卷2期 |
【页码】 |
186-189
页,共
4
页 |
【作者】 |
Guangyu FAN;
Xiuju BIAN;
Huibin LI;
Zhao MENG;
Shengyao LIU;
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【关键词】 |
Kentucky bluegrass; trinexapac-ethyl; clipping yield; leaf width; chlorophyll content |
【摘要】 |
The practices with low clippings production to save time, money, or landfill space, were favored by turf managers. Understanding the responses of Kentucky bluegrass (Poa pratensis L.) to Trinexapac-ethyl (TE) would facilitate recommendations regarding its safe and effective use in Northern China. The objectives of this study are (1) to investigate the effects of TE on vertical growth, clipping yield, leaf width, and chlorophyll content of Kentucky bluegrass, and (2) to compare the seasonal application impacts of TE. Both spring and autumn experiment results demonstrated that Trinexapac-ethyl applied to Kentucky bluegrass suppressed the vertical grass growth and significantly reduced the Kentucky bluegrass clippings production within a few weeks after initial treatment. Applied trinexapac-ethyl enhanced Kentucky bluegrass leaf width in both spring and autumn experimental periods. Discoloration on leaf tips was observed and lasted for four weeks when the same TE rate of 0.191mL.m−2 was applied in early autumn. Darker leaves with higher chlorophyll content compared with non-TE-treatments appeared after the initial four weeks of the treatment in autumn and the treatment for the entire spring. |
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