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Ion Partitioning among Soil and Plant Components under Drip, Furrow, and Sprinkler Irrigation Regimes

Field and Modeling Assessments

^a Dep. of Soil, Water, and Climate, University of Minnesota, 1991 Upper Buford Circle, St. Paul, MN 55108
^b USDA-ARS, Pacific West Area, 800 Buchanan St., Albany, CA 94710
^c USDA-ARS, George E. Brown, Jr., Salinity Laboratory, 450 W. Big Springs Rd., Riverside, CA 92507

View larger version (45K): [in a new window]   Fig. 1. Temporal variations of soil water content measured with time domain reflectometry (TDR) at 10 cm below the center of field rows under drip, furrow, and sprinkler irrigation.

View larger version (35K): [in a new window]   Fig. 2. Soil salinity measured as apparent electrical conductivity (ECa) at 10 cm below the center of field rows under drip, furrow, and sprinkler irrigation.

View larger version (28K): [in a new window]   Fig. 3. Seasonal accumulation of calcium (Ca) in plant tissues under drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Salinity). Error bars = standard deviations (n = 9).

View larger version (26K): [in a new window]   Fig. 4. Seasonal accumulation of sodium (Na) in plant tissues under drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Salinity). Error bars = standard deviations (n = 9).

View larger version (27K): [in a new window]   Fig. 5. Seasonal accumulation of chloride (Cl) in plant tissues under drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Salinity). Error bars = standard deviations (n = 9).

View larger version (36K): [in a new window]   Fig. 6. Calcium (Ca) content under the row and furrow locations of the soil profile at the end of the growing season subjected to drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Measured ± SD and Model).

View larger version (35K): [in a new window]   Fig. 7. Sodium (Na) content under the row and furrow locations of the soil profile at the end of the growing season subjected to drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Measured ± SD and Model).

View larger version (37K): [in a new window]   Fig. 8. Chloride (Cl) content under the row and furrow locations of the soil profile at the end of the growing season subjected to drip, furrow, and sprinkler irrigation with good quality (Control) and saline water (Measured ± SD and Model).