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The utility of water production models as irrigation management tools is dependent upon their accuracy. Development of precise water production models requires a thorough understanding of how water and other factors interact to affect plant growth and yield. The objective of this experiment was to identify significant environmental variables which control(More)
In the Mesilla Valley of southern New Mexico, furrow irrigation is the primary source of water for growing onions. As the demand for water increases, there will be increasing competition for this limited resource. Water management will become an essential practice used by farmers. Irrigation ef®ciency (IE) is an important factor into improving water(More)
  • A. S. Abdul-Jabbar, T. W. Sammis, Assistant professor D. G. Lugg
  • 2004
There have been a few investigations on the effect of moisture on root development of alfalfa (Medicago sativa L.), but none have attempted to describe the relationships in a quantitative manner. Therefore, alfalfa root patterns along with yield and evapotranspiration (ET) were examined under different moisture levels, using a line-source sprinkler system.(More)
Onions are a major irrigated crop in New Mexico. An excessive amount of water is generally applied, because the crop is shallow-rooted and requires frequent irrigation to achieve good yields. Onions under de®cit irrigation have a decrease in evapotranspiration and yield. Consequently, farmers need to use the water production function (wpf) for onions to(More)
Net radiation is a key component of the energy balance, whose estimation accuracy has an impact on energy flux estimates from satellite data. In typical remote sensing evapotranspiration (ET) algorithms, the outgoing shortwave and longwave components of net radiation are obtained from remote sensing data, while the incoming shortwave (S) and longwave (L)(More)
Yield response of lettuce (Lactuca sativa L.) and Chinese cabbage (Brassica campestris L. Group pekinensis) to eight different drip irrigation rates was determined in 1980–1984 at Lalamilo, Hawaii. Treatments were arranged in a gradient irrigation design replicated three times and were irrigated daily with amounts ranging from 0.76 mm to 6.09 mm. Yield(More)
Sources of regional particulate matter (PM), particularly agricultural operations, must be understood in order to manage the air quality in irrigated dry climates. Direct monitoring measurements alone are useful, but not sufficient, to estimate regional PM source concentrations. This paper combines modeling with ground (point) and airplane (spatial)(More)
  • D. G. Lugg, A. S. Tubaileh, C. E. Kallsen, T. W. Sammis
  • 2004
The objective of this experiment was to quantitatively describe, on three dates throughout the growing season, the rooting patterns of spring barley (Hordeum vulgare L.) growing under an irrigation gradient on a clay loam soil (clayey over loamy, montmorillonitic (calcareous), thermic Vertic Torrifluvent) as Las Cruces, New Mexico. Evapotranspiration (Et)(More)
A Lagrangian particle model has been adapted to examine human exposures to particulate matter < or = 10 microm (PM10) in agricultural settings. This paper reports the performance of the model in comparison to extensive measurements by elastic LIDAR (light detection and ranging). For the first time, the LIDAR measurements allowed spatially distributed and(More)
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