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Çѱ¹ÀܵðÇÐȸ / v.20, no.1, 2006³â, pp.25-31
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±×´Ã Áö¿ª¿¡¼ÀÇ Zoysiagrass¿¡ ¹ÌÄ¡´Â Trinexapac-ethylÀÇ È¿°ú
( Effect of Trinexapac-ethyl on Zoysiagrass Quality under a Shade Condition ) |
| ¿Áâȣ; (ÁÖ)ÈÀο¡ÀÌ¿¥ - ¿¡ÀÌ¿¥ Àܵ𿬱¸¼Ò;
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| Meyer' zoysiagrass(Zoysia iaponica Steud.)´Â ÀϹÝÀûÀ¸·Î ¹Ì±¹ ÁߺÎÁö¿ª¿¡¼ °ñÇÁÀå Æä¾î ¿þÀÌ ¶Ç´Â Ƽ¿¡ ÀϹÝÀûÀ¸·Î ¸¹ÀÌ ¾²ÀÌ´Â Àܵð·Î ÀûÀº ½Ãºñ¿Í °ü¼ö¿Í ÇÔ²² ÁÁÀº Ç÷¡À̸¦ Á¦°øÇÑ´Ù. ÇÏÁö¸¸ ±×´Ã Áö¿ª¿¡¼ÀÇ »ýÀ°ÀÌ ÀúÇϵǾî ǰÁúÀ» ¶³¾î¶ß¸°´Ù. °¨¼ÒµÇ¾îÁø ±¤·®Àº Àܵð ÀÙÀÇ ¿ôÀÚ¶÷À» ÀÏÀ¸Å°¸ç ¹Ðµµ°¡ ÀúÇÏµÇ°í ¾àÇÑ Àܵð »ýÀ°°ú ÇÔ²² ´ä¾ÐÀ̳ª µðº¸Æ®¿¡ µû¸¥ Àç»ýÀ» ÀúÇϽÃŲ´Ù. ÀÌ ½ÇÇèÀÇ ¸ñÀûÀº TEÀÇ Ã³¸®°¡ ±×´Ã Áö¿ª¿¡¼ÀÇ ÀܵðÀÇ ¿ôÀÚ¶÷À» ¾ïÁ¦Çϰí ǰÁúÀ» Çâ»ó ½Ã۴°¡¸¦ ¾Ë¾Æº¸±â À§ÇÔ¿¡ ÀÖ´Ù. ÀÌ ½ÇÇè¿¡¼ µÎ °¡Áö 󸮴 Â÷±¤ Á¶°Ç(0%, 79%, 92% Â÷±¤¸·) °ú TE [0, 48(0.5x), $96g{cdot}ha^{-1};a.i(1x)$]·Î Àû¿ëÇÏ¿´´Ù. ¹« Â÷±¤ ó¸® ½Ã, 0.5x-ºñÀ²·Î TE󸮿¡¼ 4 ÁÖÈÄ ¹« 󸮱¸¿¡ ºñÇØ 18%ÀÇ Àܵ𠿹Ãʹ°ÀÇ °¨¼Ò¸¦ º¸¿´°í 1x-ºñÀ²ÀÇ TE 󸮴 $30{sim}38%$ÀÇ ¿¹Ãʹ° °¨¼Ò¸¦ º¸¿´´Ù. ¸Å´Þ 1x-ºñÀ²ÀÇ TE ó¸® ½Ã ¹« Â÷±¤ ó¸®¿Í 79% Â÷±¤¿¡¼ zosiagrassÀÇ ¹Ðµµ¸¦ Áõ°¡ ½ÃÄ×´Ù. ¹« 󸮿¡ ºñÇØ µÎ TE ºñÀ²ÀÇ Ã³¸®°¡ ÀܵðÀÇ ¿ôÀÚ¶÷À» °¨¼Ò½ÃÄ×À¸¸ç 1x-ºñÀ²·Î TE ó¸® ½Ã 79% Â÷±¤¿¡¼ Àܵð ǰÁúÀÌ ÀúÇϵǴ °ÍÀÌ Áö¿¬µÇ¾ú´Ù. ÀÌ ½ÇÇè¿¡¼ ±×´ÃÁø Áö¿ª¿¡¼ÀÇ TE 󸮰¡ zoysiagrass ÀÇ ¿ôÀÚ¶÷À» ÁÙÀ̰í Àܵð ǰÁúÀ» Çâ»ó ½ÃŲ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| Meyer' zoysiagrass(Zoysia japonica Steud.) is a popular turfgrass species used for transition zone golf course fairways and tees in mfd U.S.A golf courses because it is generally winter hardy while providing an excellent playing surface with minimal chemical and irrigation inputs. However, its functionality declines easily in many of the shaded areas of these courses. Reduced irradiance causes excessive shoot elongation, reduced tillering, and weak plants that are poorly suited to tolerate or recover from traffic and devoting. Trinexapac-ethyl (TE) effectively reduces gibberellic acid (GA) biosynthesis and subsequent shoot cell elongation. This study was initiated to evaluate TE effect on shoot elongation and stand persistence under two levels of shade in 'Meyer' zoysiagrass. A mature stand of 'Meyer' was treated with all combinations of three levels of shade(0%, 79%, and 92%) and three levels of monthly TE [0, 48 $g{cdot}ha^{-1}$ a.i(0.5x) and 96 $g{cdot}ha^{-1}$ a.i(1x)]. In full sun, the TE at 48 $g{cdot}ha^{-1}$ a.i reduced clipping yield by 18% over a four-week period and, whereas the TE at 96 $g{cdot}ha^{-1}$ a.i by 30% to 38%. Monthly application of TE at the 96 $g{cdot}ha^{-1}$ a.i increased 'Meyer' tiller density in full sun and under 79% shade. Both rates of TE consistently reduced shoot growth under shade relative to the shaded control. Only the monthly applications of the TE at 96 $g{cdot}ha^{-1}$ a.i consistently delayed loss of quality under 79% shade. Our results indicate TE can be an effective management practice to increase 'Meyer' zoysiagrass persistence in shaded environments. |
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| Ű¿öµå |
| ¹Ðµµ;ºÐ¾ó°æ;¿¹Áö¹°;Â÷±¤;Çѱ¹Àܵð;clipping yield;shade;tiller density;trinexapac-ethyl(TE);zoysiagrass; |
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Çѱ¹ÀܵðÇÐȸÁö / v.20, no.1, 2006³â, pp.25-31
Çѱ¹ÀܵðÇÐȸ
ISSN : 1229-3253
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741583866)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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