Impact of soil moisture and temperature on potato production using seepage and center pivot irrigation

Xiaolin Liao, Zhihua Su, Guodong Liu, Lincoln Zotarelli, Yuqi Cui and Crystal Snodgrass

Agricultural Water Management, 2016, vol. 165, issue C, 230-236

Abstract: Irrigation, soil moisture and temperature play an important role in potato production. This field study was conducted at a private potato farm in SW Florida from 2012 to 2014. The randomized complete block design was used: four production farms each with a pair of seepage and hybrid center pivot irrigation systems. Soil moisture and temperature at five soil depths, rainfall, and water table in situ were monitored. Nitrate levels at the top 20cm soils were measured at harvest in the second growing season. Water usage was calculated by the flow meters and rain gauges. Potato yields were measured. The stepwise linear regression showed that the potato yield was mainly regulated by the surface (10cm) soil temperature and soil water moisture at 20 and 30cm depths. Hybrid center pivot can save more than 50% of irrigation water without significant yield loss, suggesting center pivot has great potential in water savings. Hybrid center pivot irrigation had relatively low nitrate concentrations at the top 20cm soil, indicating a new fertilizer program may be needed for overhead irrigation.

Keywords: Irrigation; Water table; Potato yield; Volumetric soil water content; Soil temperature (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:165:y:2016:i:c:p:230-236

DOI: 10.1016/j.agwat.2015.10.023

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