Results 311 to 320 of about 117,966 (357)

Evapotranspiration of Deficit Irrigated Sorghum

World Environmental and Water Resources Congress 2007, 2007
Deficit irrigation commonly is used in regions with reduced or limit ed irrigation capacity to increase water use efficiency (WUE). This research measured sorghum ( Sorghum bicolor L. Moench ) water use (ET) and yield so WUE could be determined. Two precision weighing lysimeters were used to accurately measure sorghum ET fr om a fully irrigated field ...
T. A. Howell, J. A. Tolk, S. R. Evett, K. S. Copeland, D. A. Dusek   +4 more
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Economic Considerations of Deficit Irrigation

Journal of Irrigation and Drainage Engineering, 1984
The factors related to potential yields of crops are briefly described. The most important are water, fertility, and available energy as measured by the evaporative potential. Mathematical yield models are presented relating crop evapotranspiration and total water available to relative yields.
George H. Hargreaves, Zohrab A. Samani
openaire   +1 more source

Advances in Deficit Irrigation Management

5th National Decennial Irrigation Conference Proceedings, 5-8 December 2010, Phoenix Convention Center, Phoenix, Arizona USA, 2010
Scarcity of irrigation water supplies is leading to the need to consider deficit irrigation which is the intentional under-irrigation of crops resulting in evapotranspiration and yield reduction. We present analytical tools that can be used to assist irrigators and water managers in assessing the water balance and economic consequences of various ...
null Derrel L Martin, null Raymond J Supalla, null Christopher L Thompson, null Brian P McMullen, null Gary W Hergert, null Paul A Burgener   +5 more
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Deficit Irrigation and Water Conservation

2020
In this chapter, we tackled some of the concepts and definitions used in application of deficit irrigation instead of full irrigation as a technology aims at conserving irrigation water. Both water use efficiency and water productivity are important estimators in the assessment of the effect of deficit irrigation.
Samiha Ouda, Tahany Noreldin
openaire   +1 more source

Wheat Insufficiency and Deficit Irrigation

2020
In this chapter, we tested whether implementing different production alternatives will contribute in increasing wheat national production and increase its self-sufficiency ratio. Data on the cultivated area and productivity of wheat were collected for both old and new lands on governorate level, as well as weather data in 2017 and water requirements ...
Abd El-Hafeez Zohry, Samiha Ouda
openaire   +1 more source

Macromanagement of deficit-irrigated peanut with sprinkler irrigation

Agricultural Water Management, 2009
Precision irrigation management and scheduling, as well as developing site- and cultivar-specific crop coefficient (Kc), and yield response factor to water deficit (ky) are very important parameters for efficient use of limited water resources. This study investigated the effect of deficit irrigation, applied at different growth stages of peanut with ...
openaire   +1 more source

Water Deficits—Irrigation Design and Programming

Journal of the Irrigation and Drainage Division, 1972
Irrigation system design and economic analysis of proposed irrigation schemes require quantitative prediction of relationships between crop production and water use. In keeping with recent irrigation design practice, a comprehensive table is presented to update and add to earlier information defining the limits of allowable soil water depletion prior ...
Robert M. Hagan, Ian J. Stewart
openaire   +1 more source

Deficit Irrigation. I: Analytical Framework

Journal of Irrigation and Drainage Engineering, 1990
The economics of deficit irrigation are examined. The concepts developed in the heuristic discussion are developed into a set of rigorous mathematical expressions for determination of optimum water use under deficit irrigation. These expressions also can be used to estimate the range of water use within which deficit irrigation would be more profitable
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Sorghum Yield Response to Deficit Irrigation

Transactions of the ASABE, 2012
Because dwindling water supplies are limiting crop production, a field study was conducted during 2005-2009 in southwest Kansas to determine the yield response of grain sorghum to irrigation and evapotranspiration (ETc) and to measure plant growth parameters and soil water use.
null N. L. Klocke, null R. S. Currie, null D. J. Tomsicek, null J. W. Koehn   +3 more
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Corn Yield Response to Deficit Irrigation

World Environmental and Water Resources Congress 2011, 2011
Because dwindling water supplies are limiting crop production, a 5-year field study was conducted to determine the yield response of corn to irrigation and evapotranspiration (ETc). ETc and productivity (yield/ETc) significantly decreased as irrigation decreased. The deficit irrigation treatments were able to store more non-growing season precipitation
N. L. Klocke, R. S. Currie
openaire   +1 more source