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How Soil pH affects the Activity and Persistence of Herbicides (Soil Acidification Series)

Alan J. Raeder , Drew Lyon , Jim Harsh , Ian Burke ,
FREE
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This publication discusses how decreasing soil pH contributes to increased instances of herbicide persistence and categorizes commonly used herbicides as either a weak acid, weak base, cationic, nonionic polar, or nonpolar. It also briefly explains how the soil/herbicide interactions within each category can be affected by pH.

The Soil Acidification series begins with An Introduction, covering the fundamentals of soil pH and acidification, and continues with other fact sheets on more specific topics such as the influence of pH on pathogens and microbes, recommended varieties of specific crops, crop nutrition, and liming.

Department(s): Agriculture
Pages / Length: 8
Publication Date: 10-1-2015



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Decreasing soil pH, also called soil acidification, is a growing concern in eastern Washington and northern Idaho. Researchers and farmers have measured soil pH values below 5.0 throughout the Palous ...


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