Water Savings and Performance of ‘KSUZ 0802’ Hybrid Zoysiagrass in Response to Irrigation Strategy

IF 1 4区农林科学 Q3 HORTICULTURE

Horttechnology Pub Date : 2023-04-01 DOI:10.21273/horttech05157-22

Manoj Chhetri, J. Fry, M. Kennelly, D. Bremer, A. Chandra, Justin Eads

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引用次数: 0

Abstract

Irrigation methods that can minimize water use are needed, and the performance of recently released ‘KSUZ 0802’ hybrid zoysiagrass (Zoysia matrella × Zoysia japonica) has not been evaluated under such management. Therefore, field experiments were conducted in Manhattan, KS, and Dallas, TX, USA, to compare the amount of water applied and ‘KSUZ 0802’ performance and recovery resulting from irrigation using the following: 1) routine irrigation (1.2 inches/week), 2) evapotranspiration (ET)-based irrigation (60% of reference ET), 3) soil moisture sensor (SMS)-based irrigation, and 4) no irrigation. The experiment was conducted under a rainout shelter in Kansas from 15 Jul to 27 Sep 2019 and 8 Jun to 19 Oct 2020, and in Texas the experiment was conducted under open field conditions from 22 Jun to 9 Sep 2020. The SMS-based irrigation method in Kansas reduced water application by 68% and 52%, respectively, compared with routine or ET-based irrigation. In Texas, the corresponding water savings were 29% and 13%, respectively. The water savings discrepancy was mainly due to differences in local weather conditions and irrigation demand. Visual turf quality of turf receiving SMS-based irrigation remained above the minimally acceptable level throughout the study in Kansas, whereas in Texas, turf quality declined below acceptable level after 2 weeks. In Kansas, turf retained acceptable quality for more than 21 days with no irrigation, and after rewatering, nonirrigated turf recovered back to significant green cover (93% in 2019 and 67% in 2020). ‘KSUZ 0802’ demonstrated good drought tolerance and recovery in Kansas.

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杂交结缕草‘KSUZ 0802’节水性能对灌溉策略的响应

需要能够最大限度地减少用水的灌溉方法，而最近发布的“KSUZ 0802”杂交结缕草（结缕草×结缕草）的性能尚未在这种管理下进行评估。因此，在堪萨斯州曼哈顿和美国得克萨斯州达拉斯进行了田间试验，以比较灌溉的水量和“KSUZ 0802”性能和回收率，使用以下方法：1）常规灌溉（1.2英寸/周），2）基于蒸散（ET）的灌溉（参考ET的60%），3）基于土壤湿度传感器（SMS）的灌溉，以及4）不灌溉。该实验于2019年7月15日至9月27日和2020年6月8日至10月19日在堪萨斯州的一个防雨棚下进行，在德克萨斯州，该实验于2020年6日22日至9日在露天条件下进行。与常规灌溉或ET灌溉相比，堪萨斯州基于SMS的灌溉方法分别减少了68%和52%的用水。在得克萨斯州，相应的节水率分别为29%和13%。节水差异主要是由于当地天气条件和灌溉需求的差异。在堪萨斯州的整个研究过程中，接受SMS灌溉的草坪的视觉草坪质量保持在最低可接受水平以上，而在德克萨斯州，草坪质量在2周后下降到可接受水平以下。在堪萨斯州，草皮在没有灌溉的情况下保持了21天以上的可接受质量，在重新浇水后，未灌溉的草皮恢复到了显著的绿色覆盖率（2019年为93%，2020年为67%）KSUZ 0802’在堪萨斯州表现出良好的抗旱性和恢复能力。

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 农林科学-园艺

CiteScore

2.30

自引率

10.00%

发文量

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.