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Title: Future crop yields and water productivity changes for Nebraska rainfed and irrigated crops

Abstract

In this study, we assessed future rainfed and irrigated crop yield and water productivity changes in Nebraska across multiple climate and emission scenarios using an empirical modeling approach. We found rainfed crops showed slightly increased crop water productivity while irrigated crops showed no change or decreased water productivity. Contrary to U.S.-wide studies reporting declines in crop yields, we projected Nebraska crop yields to increase overall with greatest increases in current rainfed fields due to combined effects from maximum and minimum temperatures. However, the increased rainfed yields are not sufficient to fully close the gap between rainfed and irrigated yields.

Authors:
 [1];  [2];  [3]
+ Show Author Affiliations
  1. National Center for Atmospheric Research (NCAR), Boulder, CO (United States). Climate and Global Dynamics Lab.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate and Ecosystem Sciences Division
  2. Chengdu Univ. of Information Technology, Chengdu (China). School of Atmospheric Sciences
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate and Ecosystem Sciences Division; Univ. of California, Berkeley, CA (United States). Energy and Resource Group
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1567131
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Water International
Additional Journal Information:
Journal Volume: 43; Journal Issue: 6; Journal ID: ISSN 0250-8060
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; crop yields; water productivity; irrigated crops; rainfed crops; Nebraska

Citation Formats

Lu, Yaqiong, Yang, Xianyu, and Kueppers, Lara. Future crop yields and water productivity changes for Nebraska rainfed and irrigated crops. United States: N. p., 2018. Web. doi:10.1080/02508060.2018.1516093.
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Lu, Yaqiong, Yang, Xianyu, & Kueppers, Lara. Future crop yields and water productivity changes for Nebraska rainfed and irrigated crops. United States. doi:10.1080/02508060.2018.1516093.
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Lu, Yaqiong, Yang, Xianyu, and Kueppers, Lara. Mon . "Future crop yields and water productivity changes for Nebraska rainfed and irrigated crops". United States. doi:10.1080/02508060.2018.1516093. https://www.osti.gov/servlets/purl/1567131.
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@article{osti_1567131,
title = {Future crop yields and water productivity changes for Nebraska rainfed and irrigated crops},
author = {Lu, Yaqiong and Yang, Xianyu and Kueppers, Lara},
abstractNote = {In this study, we assessed future rainfed and irrigated crop yield and water productivity changes in Nebraska across multiple climate and emission scenarios using an empirical modeling approach. We found rainfed crops showed slightly increased crop water productivity while irrigated crops showed no change or decreased water productivity. Contrary to U.S.-wide studies reporting declines in crop yields, we projected Nebraska crop yields to increase overall with greatest increases in current rainfed fields due to combined effects from maximum and minimum temperatures. However, the increased rainfed yields are not sufficient to fully close the gap between rainfed and irrigated yields.},
doi = {10.1080/02508060.2018.1516093},
journal = {Water International},
number = 6,
volume = 43,
place = {United States},
year = {2018},
month = {10}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI:  10.1080/02508060.2018.1516093
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Figures / Tables:

Figure 1 Figure 1: 1982-2012 averaged harvested Hectares of rainfed and irrigated corn, soybean, and winter wheat in Nebraska at the county level (Source data: USDA NASS).
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