Results 11 to 20 of about 48,432 (298)

New Evapotranspiration Crop Coefficients [PDF]

open access: yesJournal of the Irrigation and Drainage Division, 1982
Improved crop coefficients for various Pacific Northwest irrigated crops were developed for estimating crop evapotranspiration (ET) from estimates or measurements of reference ET. Reference ET was based on that for well watered, actively growing alfalfa with sufficient growth for near maximum ET in arid, irrigated regions.
Wright, James L.
openaire   +2 more sources

Assessment of Deep Water-Saving Practice Effects on Crop Coefficients and Water Consumption Processes in Cultivated Land–Wasteland–Lake Systems of the Hetao Irrigation District [PDF]

open access: yesPlants
Water scarcity, soil salinization, and desertification threaten sustainable agricultural ecosystems of Hetao irrigation district, Yellow River Basin (YRB).
Jiamin Li   +7 more
doaj   +2 more sources

Crop water use and crop coefficients of sunflower in the U.S. Central Great Plains

open access: yesAgricultural Water Management
Sunflower is a drought-tolerant crop commonly grown as a rainfed crop in semi-arid areas, but irrigation is required to produce maximum yield. The purpose of this study was to determine sunflower water requirements and crop coefficients to facilitate ...
Thomas J. Trout   +2 more
doaj   +2 more sources

Deriving crop coefficients for evergreen and deciduous fruit orchards in South Africa using the fraction of vegetation cover and tree height data

open access: yesAgricultural Water Management, 2023
Inaccurate crop coefficients are major contributing sources of uncertainty that lead to inefficient use of limited available water resources. Understanding the need to improve water use efficiency in South Africa’s fruit industry, this study evaluated ...
Munashe Mashabatu   +5 more
doaj   +3 more sources

New crop coefficients estimate water use of vegetables, row crops

open access: yesCalifornia Agriculture, 1998
To estimate the water use of vegetable and row crops, crop coefficients were developed using portable Bowen ratio instruments that were constructed and tested against lysimeters.
S Grattan   +5 more
doaj   +3 more sources

Estimating Crop Coefficients Using Remote Sensing-Based Vegetation Index

open access: yesRemote Sensing, 2013
Crop coefficient (Kc)-based estimation of crop evapotranspiration is one of the most commonly used methods for irrigation water management. However, uncertainties of the generalized dual crop coefficient (Kc) method of the Food and Agricultural ...
Kenneth Hubbard   +2 more
doaj   +3 more sources

Estimation of corn coefficients with vegetation indices using multispectral camera and drone

open access: yesResearch in Agricultural Engineering, 2023
Optimum irrigation scheduling and new technologies are the key to the successful practice of modern agriculture and natural resources, such as water management. Α three-year research project was conducted at Velestino, Magnesia, Greece.
Christos Dimitrios Papanikolaou   +1 more
doaj   +2 more sources

Crop coefficients of major crops of middle Gujarat region

open access: yesJournal of Agrometeorology, 1999
G.B. CHAUDHARI   +3 more
doaj   +2 more sources

Water Use and Crop Coefficients in Sprinkler Irrigated Rice

open access: yesItalian Journal of Agronomy, 2009
Field experiments were carried out during the years 2002, 2004, 2005 and 2006 to analyze water-soil-atmosphere interactions in sprinkler irrigated rice. The research was carried out in Sardinia (39º 59’ N; 8º 40’ E, at altitude 15 m).
Antonino Spanu   +2 more
doaj   +2 more sources

Modelling Soil Water Redistribution in Irrigated Japanese Plum (Prunus salicina) Orchards in the Western Cape (South Africa)

open access: yesHorticulturae, 2023
Japanese plum (Prunus salicina) farming in the Western Cape (South Africa) is an important industry for the export market and job creation and is a large water user; however, adequate information on water requirements of this crop is not available in ...
Nebojša Jovanović   +3 more
doaj   +1 more source

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