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Response of Two Colorado Russet Potato Cultivars to Reduced Irrigation Water Use
American Journal of Potato Research ( IF 1.5 ) Pub Date : 2020-04-06 , DOI: 10.1007/s12230-020-09771-7
Samuel YC Essah , Allan A. Andales , Troy A. Bauder , David G. Holm

In most irrigated potato (Solanum tuberosum L.) production systems, the amount of irrigation water applied is equivalent to or greater than evapotranspiration (ET) replacement. ET is mostly estimated for a wide range of potato cultivars, which often leads to over or under irrigation of some cultivars. Studies were conducted at Colorado State University’s San Luis Valley Research Center to evaluate the effect of limited irrigation water below the estimated ET on performance of two new Colorado Russet potato cultivars ‘Mercury Russet’ and ‘Rio Grande Russet’. For Mercury Russet, treatments included 80%, 90%, and 100% ET replacement in 2014, and 70%, 82%, and 100% ET replacement in 2015. Treatments for Rio Grande Russet included 80%, 90%, and 100% ET replacement in 2014, and 79%, 85%, and 100% ET replacement in 2015. A reduction of irrigation water by 20% in 2014 and 30% in 2015 delayed leaf senescence of Mercury Russet until 86 to 90 days after planting (DAP). Tuber yields obtained under 10% and 18% reduced irrigation water equaled yields obtained under 100% ET treatment. For Rio Grande Russet, LAI was not impacted with limited irrigation water in 2014, but in 2015 LAI reduced with 15% or more irrigation water reduction. Limiting irrigation water beyond 20% reduced tuber yields in Rio Grande Russet. Data from these studies indicate that irrigation water applied in the production of Mercury Russet and Rio Grande Russet can be reduced up to 18% and 15%, respectively, without affecting tuber yield and quality.

中文翻译:

两个科罗拉多赤褐色马铃薯品种对减少灌溉用水的响应

在大多数灌溉马铃薯中(马铃薯)L.)生产系统中,灌溉水的用量等于或大于蒸发蒸腾量(ET)的替代量。估计ET主要用于广泛的马铃薯品种,这常常导致某些品种的灌溉过度或不足。在科罗拉多州立大学的圣路易斯谷研究中心进行了研究,以评估低于估计的ET的有限灌溉水对两种新的科罗拉多赤褐色马铃薯品种“ Mercury Russet”和“ Rio Grande Russet”的性能的影响。对于Mercury Russet,2014年的治疗包括80%,90%和100%的ET替代,2015年包括70%,82%和100%的ET替代。Rio Grande Russet的治疗包括80%,90%和100% 2014年更换ET,2015年更换79%,85%和100%的ET。2014年灌溉用水减少了20%,2015年灌溉用水减少了30%,将汞赤褐色的叶片衰老推迟到种植后86到90天(DAP)。在10%和18%的灌溉水减少下获得的块茎产量等于在100%ET处理下获得的产量。对于里约格兰德·拉塞特(Rio Grande Russet),2014年LAI不受灌溉水有限的影响,但2015年LAI减少了15%或更多的灌溉水。将灌溉水限制在20%以上,会降低里奥格兰德·拉塞特(Rio Grande Russet)的块茎产量。这些研究的数据表明,在不影响块茎产量和质量的情况下,可将生产水银和里奥格兰德生产的灌溉水分别减少18%和15%。在10%和18%的灌溉水减少下获得的块茎产量等于在100%ET处理下获得的产量。对于里约格兰德·拉塞特(Rio Grande Russet),2014年LAI不受灌溉水有限的影响,但2015年LAI减少了15%或更多。将灌溉水限制在20%以上,会降低里奥格兰德·拉塞特(Rio Grande Russet)的块茎产量。这些研究的数据表明,在不影响块茎产量和质量的情况下,可将生产水银和里奥格兰德生产的灌溉水分别减少18%和15%。在10%和18%的灌溉水减少下获得的块茎产量等于在100%ET处理下获得的产量。对于里约格兰德·拉塞特(Rio Grande Russet),2014年LAI不受灌溉水有限的影响,但2015年LAI减少了15%或更多。将灌溉水限制在20%以上,会降低里奥格兰德·拉塞特(Rio Grande Russet)的块茎产量。这些研究的数据表明,在不影响块茎产量和品质的情况下,可将生产水银和里奥格兰德生产的灌溉水分别减少18%和15%。
更新日期:2020-04-06
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