Results 261 to 270 of about 78,085 (310)

Crop Coefficients: A Literature Review

Journal of Irrigation and Drainage Engineering, 2016
AbstractRecently presented climate change scenarios include increasing demand for water, due to both increase in temperature and variations in precipitation pattern.
GUERRA, ELISA, VENTURA, FRANCESCA, Snyder, R. L.   +2 more
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Use of Crop Canopy Size to Estimate Crop Coefficient for Vegetable Crops

World Environmental and Water Resource Congress 2006, 2006
Planting time, plant density, variety, and cultural practices vary widely for horticultural crops. It is difficult to estimate a basal crop coefficient that can incorporate these variations. Canopy cover, as an indicator of intercepted sunlight, is related to crop water use.
Thomas Trout, Jim Gartung
openaire   +1 more source

Can crop coefficients improve the economics of irrigated crops?

Acta Horticulturae, 2017
Climate and market conditions together with water policies have a large impact on agricultural water use. Evapotranspiration (ET) accounts for most of the water loss from a well-managed, irrigated crop, and the crop coefficient (Kc) method is widely used to estimate ET.
GUERRA, ELISA, VENTURA, FRANCESCA, VIAGGI, DAVIDE, Snyder, R. L.   +3 more
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Crop Coefficients of Some Selected Crops of Andhra Pradesh

Journal of The Institution of Engineers (India): Series A, 2015
Precise information on crop coefficients for estimating crop evapotranspiration (ETc) for regional scale irrigation planning is a major impediment in many regions. Crop coefficients suggested based on lysimeter data by earlier investigators have to be locally calibrated to account for the differences in the crop canopy under given climatic conditions ...
K. Chandrasekhar Reddy, S. Arunajyothy, P. Mallikarjuna   +2 more
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Crop Coefficients for Drip-irrigated Processing Tomatoes

2004, Ottawa, Canada August 1 - 4, 2004, 2004
Efficient management of drip irrigation systems requires reasonable estimates of crop evapotranspiration (ET), normally calculated as the product of a crop coefficient and a reference crop ET. However, a review of literature revealed mid-season crop coefficients of processing tomatoes to range from 1.10 to 1.25.
Blaine R. Hanson, Donald M. May
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Weighing Lysimeters for the Determination of Crop Water Requirements and Crop Coefficients

Applied Engineering in Agriculture, 2006
Weighing lysimeters are accurate instruments to measure crop evapotranspiration. Three weighing lysimeters, consisting of undisturbed 1.5- ×2.0-m surface area by 2.5-m depth cores of soil, were constructed and installed at the Texas Agricultural Experiment Station in Uvalde, Texas. Two lysimeters, each weighing approximately 14 Mg, were located beneath
null T. Marek, null G. Piccinni, null A. Schneider, null T. Howell, null M. Jett, null D. Dusek   +5 more
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A Crop Planning Problem with Fuzzy Random Profit Coefficients

Fuzzy Optimization and Decision Making, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tasuku Toyonaga, Takeshi Itoh, Hiroaki Ishii   +2 more
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Revising Crop Coefficient for Washington Sate

2013 Kansas City, Missouri, July 21 - July 24, 2013, 2013
Abstract. Water shortages are expected to increase in the future due to the need to grow crops to feed a growing population, the increasing production of bio fuel crops, the desire to protect and restore waterways for fish, the competition for water among different sectors, and water shortages due to climate change effects.
null Tina Karimi, null Troy Peters, null Claudio O. Stockle   +2 more
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Forage Sorghum Evapotranspiration and Crop Coefficients

5th National Decennial Irrigation Conference Proceedings, 5-8 December 2010, Phoenix Convention Center, Phoenix, Arizona USA, 2010
Forage sorghum, especially brown mid rib (BMR) hybrids, offers attractive silage options in place of corn and has excellent ethanol conversions compared with other forage sorghums. The purpose of the study was to measure the evapotranspiration (ET), yield, forage quality, and water use efficiency of a fully irrigated BMR forage sorghum hybrid grown for
null Terry Howell, null Steven R Evett, null Karen S Copeland, null Judy A Tolk   +3 more
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Evapotranspiration Crop Coefficients for Cattail and Bulrush

Journal of Hydrologic Engineering, 2004
Accurate estimates of evapotranspiration from constructed wetlands are required to establish design flow estimates and to assess the effectiveness of wetland water quality amelioration. Water consumption by two wetland plant species, Typha latifoilia (broadleaf cattail) and Scoenoplectus acutus (hardstem bulrush), was measured in a greenhouse for eight
Brett W. Towler, Joel E. Cahoon, Otto R. Stein   +2 more
openaire   +1 more source