James L. Wright
Agricultural Research Service
40Publications
17H-index
2,204Citations
Publications 40
Newest
Richard G. Allen46
Estimated H-index: 46
,
Masahiro Tasumi14
Estimated H-index: 14
+ 6 AuthorsClarence W. Robison5
Estimated H-index: 5
(University of Idaho)
Recent satellite image processing developments have provided the means to calculate evapotranspiration (ET) as a residual of the surface energy balance to produce ET “maps.” These ET maps (i.e., images) provide the means to quantify ET on a field by field basis in terms of both the rate and spatial distribution. The ET images show a progression of ET during the year or growing season as well as its spatial distribution. The mapping evapotranspiration at high resolution with internalized calibrat...
341 Citations Source Cite
Published on Apr 18, 2007in Euphytica 1.55
Carlos Germán Muñoz-Perea4
Estimated H-index: 4
(University of Idaho),
Richard G. Allen46
Estimated H-index: 46
(University of Idaho)
+ 2 AuthorsShree P. Singh36
Estimated H-index: 36
(University of Idaho)
The agricultural use of water is higher than 85% in the western USA, resulting in an increasing water deficit in the region; this situation is commonly encountered throughout the world where irrigated and irrigation-assisted production systems are operational. The objective of this study was to examine differences among dry bean (Phaseolus vulgaris L.) landraces and cultivars in terms of water use efficiency (WUE), subsequently identifying those with a high water use efficiency. Six medium-seede...
45 Citations Source Cite
Published on Mar 1, 2007in Agricultural Water Management 3.18
Harikishan Jayanthi5
Estimated H-index: 5
(Utah State University),
Christopher M. U. Neale28
Estimated H-index: 28
(Utah State University),
James L. Wright17
Estimated H-index: 17
(United States Department of Agriculture)
The present paper describes the development and validation of canopy reflectance-based crop coefficients for potato using canopy reflectance (measured using hand-held radiometers and high resolution multispectral digital imagery), and extensive crop biophysical sampling in selected potato growing fields in and around Kimberly, Idaho, during 1998 and 1999 seasons. Daily crop evapotranspiration was estimated using basal and canopy reflectance-based crop coefficients, and a hydrologic water balance...
39 Citations Source Cite
Published on Jan 20, 2006in International Journal of Remote Sensing 1.78
José O. Payero20
Estimated H-index: 20
,
Christopher M. U. Neale28
Estimated H-index: 28
(Utah State University),
James L. Wright17
Estimated H-index: 17
(Agricultural Research Service)
Sensible heat flux (H) can be an important component of the energy balance of earth surfaces, especially under dry soil conditions and incomplete canopy cover. Estimating H from remote sensing often requires correcting for atmospheric stability to account for the effect of buoyancy, and several simplified methods have been used to make this correction. In this study, data collected from alfalfa and tall fescue grass fields at Kimberly, Idaho, were used to: (1) determine how near‐noon values of s...
1 Citations Source Cite
Published on Jan 1, 2006in Crop Science 1.64
Carlos Germán Muñoz-Perea4
Estimated H-index: 4
(University of Idaho),
Henry Terán19
Estimated H-index: 19
(University of Idaho)
+ 3 AuthorsShree P. Singh36
Estimated H-index: 36
(University of Idaho)
Drought is a worldwide constraint to dry bean (Phaseolus vulgaris L.) production. The objective of this research was to determine the response of three dry bean landraces and 13 cultivars evaluated under non-stressed (NS) and intermittent drought-stressed (DS) environments at Kimberly, Idaho in 2003 and 2004. The NS received seven irrigations in 2003 and five in 2004, and DS only four in 2003 and two in 2004. Most water use occurred within the top 0.5 m soil in both the NS and DS. Drought reduce...
89 Citations Source Cite
Published on Feb 10, 2006in International Journal of Remote Sensing 1.78
José O. Payero20
Estimated H-index: 20
,
Christopher M. U. Neale28
Estimated H-index: 28
(Utah State University),
James L. Wright17
Estimated H-index: 17
(Agricultural Research Service)
A remote sensing approach was applied to estimate near‐noon values of shortwave albedo (α), the fraction of solar radiation reflected by a surface, for alfalfa and tall fescue grass at Kimberly, Idaho. The approach was based on the (P/T) ratio, which is the ratio of the partial radiation (P) sensed by a multi‐band radiometer and the total incident radiation (T) in a given wavelength range. It was found that instead of being constant, as previously suggested, the upward component of the (P/T) rat...
4 Citations Source Cite
Published on Mar 1, 2006in Agricultural Water Management 3.18
Richard G. Allen46
Estimated H-index: 46
(University of Idaho),
William O. Pruitt6
Estimated H-index: 6
(University of California, Davis)
+ 14 AuthorsJavier Baselga Yrisarry1
Estimated H-index: 1
Abstract Continued development of networks of electronic weather stations worldwide has increased the availability of weather data for calculating ET o on an hourly basis. There has been question and debate as well as studies on the appropriate expression and parameterization for the surface resistance ( r s ) parameter of the Penman-Monteith (PM) equation and the associated coefficient for the reduced form FAO-PM equation when applied hourly. This paper reviews the performance of the FAO-PM met...
264 Citations Source Cite
Published on Nov 1, 2005in Irrigation and Drainage Systems
Masahiro Tasumi14
Estimated H-index: 14
(University of Idaho),
Ricardo Trezza13
Estimated H-index: 13
(University of the Andes)
+ 1 AuthorsJames L. Wright17
Estimated H-index: 17
(Agricultural Research Service)
SEBAL and METRIC remote sensing energy-balance based evapotranspiration (ET) models have been applied in the western United States. ET predicted by the models was compared to lysimeter-measured ET in agricultural settings. The ET comparison studies showed that the ET estimated by the remote sensing models corresponded well with lysimeter-measured ET for agricultural crops in the semi-arid climates. Sensitivity analyses on impacts of atmospheric correction for surface temperature and albedo showe...
117 Citations Source Cite
Richard G. Allen46
Estimated H-index: 46
(University of Idaho),
Luis S. Pereira50
Estimated H-index: 50
(Technical University of Lisbon)
+ 2 AuthorsJames L. Wright17
Estimated H-index: 17
(United States Department of Agriculture)
Crop coefficient curves provide simple, reproducible means to estimate crop evapotranspiration (ET) from weather-based reference ET values. The dual crop coefficient sKcd method of the Food and Agricultural Organization of the United States (FAO) Irrigation and Drainage Paper No. 56 (FAO-56) is intended to improve daily simulation of crop ET by considering separately the contribution of evaporation from soil. The dual method utilizes "basal" crop coefficients representing ET from crops having a ...
238 Citations Source Cite
Published on Jan 1, 2005in Transactions of the ASABE 1.12
José O. Payero20
Estimated H-index: 20
,
Christopher M. U. Neale28
Estimated H-index: 28
,
James L. Wright17
Estimated H-index: 17
The lack of transferability of the Crop Water Stress Index (CWSI) baselines, together with the restriction of having to make required measurements close to noon and under clear-sky conditions, are major drawbacks that restrict the use of the empirical CWSI method for irrigation scheduling. The objectives of this study were to: (1) evaluate the effect of solar radiation (Rs) on the non-water-stressed baselines (NWSBs) of alfalfa (Medicago sativa L.) and tall fescue grass (Festuca arundinacea), an...
13 Citations Source Cite
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