Journal
GLOBAL FOOD SECURITY-AGRICULTURE POLICY ECONOMICS AND ENVIRONMENT
Volume 18, Issue -, Pages 27-34Publisher
ELSEVIER
DOI: 10.1016/j.gfs.2018.07.002
Keywords
Water table; Yield; Yield stability; Regional production
Categories
Funding
- USDA National Institute of Food and Agriculture (NIFA), Hatch project [1006309]
- Foundation for Food and Agriculture Research (FFAR)
- Comision Sectorial de Investigacion Cientifica (CSIC, Uruguay) at University of Nebraska-Lincoln
- NIFA [812564, 1006309] Funding Source: Federal RePORTER
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Shallow water tables (WT) can buffer against transitory rain-free periods leading to higher and more stable yields in rainfed crops. However, little is known about their influence on regional crop production and its stability. In the present study, we assessed the impact of WT on maize production in the US Corn Belt. Analysis of historical yields and modeling revealed that WT may explain higher than expected yields. At regional level, WT led to higher (6%) and more stable maize production compared with the scenario without WT, especially in years with severe drought (24% production increase). Results highlight the need to account for WT for yield forecasting and for studies investigating the influence of current and future climate on crop production.
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