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Browsing by Author "Stevens, Robert G."

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Browsing by Author "Stevens, Robert G."

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  • Acidifying soil for crop production: Inland Pacific Northwest 
    Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Horneck, Donald Arthur; Wysocki, Donald John, 1952-; Hopkins, Bryan G.; Hart, John M. (John Mervyn), 1947-; Stevens, Robert G.; Pacific Northwest Cooperative Extension ([Covallis, Or.] : Oregon State University Extension Service, 2007-09)
    This publication is a technical and practical guide for soil acidification in commercial fields. It explains the soil chemistry involved, how to determine whether pH adjustment is feasible, and methods for acidifying soi ...
  • Agricultural phosphorus management using the Oregon/Washington phosphorus indexes 
    Oregon State University. Extension Service; Sullivan, Dan M. (Dan Matthew), 1954-; Stevens, Robert G. (Corvallis, Or. : Extension Service, Oregon State University, 2003-12)
    Phosphorus is an essential element for growth and reproduction of plants and animals. Agricultural enterprises often provide supplemental P to enhance plant and animal performance. Supplemental P inputs are provided in t ...
  • Managing irrigation water quality for crop production in the Pacific Northwest 
    Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Hopkins, Bryan G.; Horneck, Donald Arthur; Stevens, Robert G.; Ellsworth, Jason W.; Sullivan, Dan M. (Dan Matthew), 1954-; Pacific Northwest Cooperative Extension ([Covallis, Or.] : Oregon State University Extension Service, 2007-08)
    This publication focuses on using water analyses to choose appropriate water treatment and water management practices for irrigated agriculture. It will help determine: • What tests are needed to characterize water qua ...
  • Managing salt-affected soils for crop production 
    Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Horneck, Donald Arthur; Ellsworth, Jaon W.; Hopkins, Bryan G.; Sullivan, Dan M. (Dan Matthew), 1954-; Stevens, Robert G.; Pacific Northwest Cooperative Extension ([Covallis, Or.] : Oregon State University Extension Service, 2007-11)
    Accumulation of excessive salt in irrigated soils can reduce crop yields, reduce the effectiveness of irrigation, ruin soil structure, and affect other soil properties. This publication is designed to help you evaluate t ...
  • Monitoring soil nutrients using a management unit approach 
    Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Staben, Mary L.; Ellsworth, Jason W.; Sullivan, Dan M. (Dan Matthew), 1954-; Horneck, Donald Arthur; Brown, Bradford D.; Stevens, Robert G.; Pacific Northwest Cooperative Extension ([Covallis, Or.] : Oregon State University Extension Service, 2003-10)
    This publication focuses on how to design a soil nutrient monitoring strategy that fits today’s requirements for record keeping and increased accuracy in managing nitrogen (N), phosphorus (P), and other nutrients. We adv ...
  • Soil test interpretation guide 
    Oregon State University. Extension Service; Marx, E. S.; Hart, John M. (John Mervyn), 1947-; Stevens, Robert G. ([Corvallis, Or.] : Oregon State University, Extension Service, 1996-08)
    Regular soil testing is an important element in nutrient management. You can use soil tests as a diagnostic tool or to identify trends through time.

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