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Published online 29 October 2007
Published in Soil Sci Soc Am J 71:1893-1901 (2007)
DOI: 10.2136/sssaj2007.0063
© 2007 Soil Science Society of America
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Root Zone Leachate from High Chemical Oxygen Demand Cannery Water Irrigation

Mitchell M. Johnsa,* and James W. Bauderb

a College of Agriculture, California State Univ., Chico, CA 95929-0310
b Dep. of Land Resources and Environmental Sciences Montana State Univ., Bozeman, MT 59717-3120


Figure 1
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  		Fig. 1. Column percolate chemical oxygen demand (COD) treatment means at 4 and 8 wk after dosing and subsequently after 20 cm of rainfall. SAR = sodium adsorption ratio. Error bars represent standard deviations. Means within each sampling period with a different letter are significantly different at the P <0.05 level, based on post hoc multiple comparisons.

 

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  		Fig. 2. Post-study soil organic matter, pH, saturated paste extract electrical conductivity (ECe), and NO3––N concentration treatment means. SAR = sodium adsorption ratio; COD = chemical oxygen demand. Only pH and ECe (treatment x depth) were significant (P < 0.05). Error bars represent 95% confidence intervals.

 

Figure 3
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  		Fig. 3. Post-study soil exchangeable Ca2+, Mg2+, Na+, and K+ concentration treatment means. SAR = sodium adsorption ratio; COD = chemical oxygen demand. Only exchangeable Na+ (treatment x depth) was significant (P < 0.05). Error bars represent 95% confidence intervals.

 




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