Evaluation of Different Aerification Methods for Ultradwarf Hybrid Bermudagrass Putting Greens

IF 1 4区 农林科学 Q3 HORTICULTURE
Alejandra Sierra Augustinus, Patrick H. McLoughlin, A. F. Arevalo Alvarenga, J. B. Unruh, Marco Schiavon
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Abstract

Aerification and topdressing are important cultural management practices that help prevent organic matter accumulation and soil compaction in golf greens. However, these practices result in surface disruption and decreased putting quality during recovery. A 2-year study was conducted on a ‘TifEagle’ hybrid bermudagrass (Cynodon dactylon × C. transvaalensis) putting green to determine the effect of different aerification methods and topdressing materials on soil properties and turfgrass recovery. Plots were aerified four times per year (May to Aug.) using 1/2-inch hollow tines, 1/4-inch hollow needle tines, hollow tines 2X + hollow needle tines 2X, or sand injection, and topdressed with either 90:10 (sand:peat) or green-dyed sand. Visual quality, normalized difference vegetation index, percent green cover, dark green color index (DGCI), surface firmness and volumetric water content were measured before initial aerification and at 7 and 21 days after aerification. Saturated hydraulic conductivity (Ksat) and organic matter (OM) content were measured monthly. Aerification with hollow tines and hollow tines 2X + hollow needle tines 2X resulted in lower firmness and OM and higher Ksat compared with hollow needle tines and sand injection. Sand injection showed the highest percent green cover and similar OM content compared with hollow tines and hollow tines 2X + hollow needle tines 2X. Green-dyed sand showed a higher percent green cover and DGCI compared with 90:10 sand:peat. Using hollow tines only or alternating them with hollow needle tines is the best option to decrease OM content while increasing Ksat in hybrid bermudagrass greens; however, their use could result in slower turfgrass recovery compared with other aerification methods.
超矮杂交百慕草推杆果岭不同曝气方式的评价
通风和追肥是重要的文化管理实践,有助于防止高尔夫果岭中的有机物积累和土壤压实。然而,这些做法会导致表面破坏,并在恢复过程中降低推杆质量。对“TifEagle”杂交狗牙根(Cynodon dactylon×C.transvalensis)进行了为期2年的绿化研究,以确定不同的通气方法和追肥材料对土壤性质和草坪草恢复的影响。地块每年(5月至8月)使用1/2英寸中空尖齿、1/4英寸中空针状尖齿、中空尖齿2X+中空针状尖牙2X或注砂进行四次通气,并用90:10(沙子:泥炭)或绿色染色沙子进行表层处理。在初始通气前和通气后7天和21天测量视觉质量、归一化差异植被指数、绿色覆盖率、深绿色指数(DGCI)、表面硬度和体积含水量。每月测量饱和导水率(Ksat)和有机质(OM)含量。与中空针状物和注砂相比,用中空针状物以及中空针状物2X+中空针状物2X进行的验证导致较低的硬度和OM以及较高的Ksat。与中空尖齿和中空尖齿2X+中空针尖齿2X相比,注砂显示出最高的绿色覆盖百分比和相似的OM含量。与90:10的沙子:泥炭相比,绿色染色的沙子显示出更高的绿色覆盖率和DGCI。仅使用空心尖齿或将其与空心针状尖齿交替使用是降低OM含量同时增加杂交狗牙根果岭Ksat的最佳选择;然而,与其他通气方法相比,使用它们可能会导致草坪草恢复较慢。
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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来源期刊
Horttechnology
Horttechnology 农林科学-园艺
CiteScore
2.30
自引率
10.00%
发文量
67
审稿时长
3 months
期刊介绍: HortTechnology serves as the primary outreach publication of the American Society for Horticultural Science. Its mission is to provide science-based information to professional horticulturists, practitioners, and educators; promote and encourage an interchange of ideas among scientists, educators, and professionals working in horticulture; and provide an opportunity for peer review of practical horticultural information.
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