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| Web URL(s): | https://scisoc.confex.com/scisoc/2015am/webprogram/Paper93939.html
Last checked: 01/09/2017 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Hansen, Neil C.;
Hopkins, Bryan G.;
Altenhofen, Jon |
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| Author Affiliation: | Hansen and Hopkins: Brigham Young University, Provo, UT; Altenhofen: Northern Colorado Water Conservancy District, Berthoud, CO |
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| Title: | Interaction of irrigation, nitrogen management, and crop genetics on water productivity of maize and Kentucky bluegrass |
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| Section: | ASA section: Climatology & modeling
Other records with the "ASA section: Climatology & modeling" Section
Symposium - Quantitiative assessment of management impacts on soil-plant-water relations
Other records with the "Symposium - Quantitiative assessment of management impacts on soil-plant-water relations" Section
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| Meeting Info.: | Minneapolis, Minnesota: November 15-18, 2015 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2015, p. 93939. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Crops; Deficit irrigation; Drought management; Drought resistance; Nitrogen level; Poa pratensis; Urban habitat; Water shortage; Yield response; Zea mays
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| Abstract/Contents: | "Water scarcity is a major threat to the sustainability of irrigated agriculture and urban landscapes and management practices that maximize the use of a limited water supply are critical. Controlled deficit irrigation is becoming more common and better understanding the genetic x management x environment interactions of these systems is needed. This presentation will summarize research on crop water productivity of controlled deficit irrigation of maize and Kentucky bluegrass and interactions with nitrogen and/or crop genetics. In a five year study in Colorado, fully irrigated maize yield averaged 12.3 Mg ha-1, with a crop water productivity of 2.0 kg m-3. Under controlled deficit irrigation, maize yield was lower, 9.9 Mg ha-1, but crop water productivity was greater, 2.4 kg m-3. In both maize and Kentucky bluegrass, high N supply reduces root growth, which in turn limits access to soil water. Similarly, in both crops N supply can be managed to influence growth and water consumption. For maize, drought tolerant hybrids were evaluated with and without water limitations. With adequate water, the drought tolerant hybrids have lower yield than conventional hybrids, but they do have higher water productivity when water is limited." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"196-2" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hansen, N. C., B. G. Hopkins, and J. Altenhofen. 2015. Interaction of irrigation, nitrogen management, and crop genetics on water productivity of maize and Kentucky bluegrass. Agron. Abr. p. 93939. |
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Last checked: 01/09/2017 |
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