SEARCH Clain's websites

The following list provides some specific on-line resources and as well as agencies, organizations, and universities that provide a host of information. Use your browser's "find on this page" function to locate specific items on this page, or use the list to guide you to websites that likely have regionally appropriate information. If you find a resource that is particularly useful and not listed here, please let us know by email to Clain Jones or Kathrin Olson-Rutz.


Alberta Agriculture and Rural Development

  • Crop decision making tools (link)
  • Fertilizer recommendation manager, rate calculator (link)
  • Nutrient use calculator (link)
  • Variety selection tool (link)

  • Manure nutrient management educational and informational resources (link)
  • Organic soil fertility (link)

Manitoba Agriculture, Food and Rural Development

  • Manure Management Application Rate Calculator (link)
  • Seed-placed safe rates (link)
  • Soil Fertility (link)

Montana Agricultural Statistics Service  (link)

Montana Department of Agriculture (link)

Montana Department of Environmental Quality(link)

Montana Department of Natural Resources (link)

Montana Natural Resources Conservation Service (link)



  • Crop planning and production guides (link)
  • Seed-placed safe rates (link)
  • Soil Conservation Association Smartphone Apps for Ag, e.g. fertilizer blend calculator (link)

USDA/ARS with N. Dakota State University

  • Crop Sequence Calculator, information on crop production, economics, plant diseases, weeds, water use, and surface soil properties to evaluate management risks associated with different crop sequences (link).



American Society of Agronomy (ASA), Crop Science Society of America (CSSA), Soil Science Society of America (SSSA) on-line webinars, courses, etc.  

ATTRA  National Sustainable Agriculture Information Service (link)

  • Sustainable soil management soil system guide (link)

Canadian Society of Agronomy (link)

Canadian Society of Soil Science (link)

Canola Council of Canada Canola Encyclopedia (link)

Canola Watch (link)

  • Canola field diagnostics tool (link)

IPNI International Plant Nutrition Institute (link)

  • 4R Nutrient Stewardship (rate, timing, placement, source) (link)
  • Crop Nutrient Deficiency Photo Library App (link)
  • Nitrogen Notes (link)
  • Nutrient Source Specific Series (link)
  • Nutrient Removal Calculator (link)
  • Safe Seed-placed Fertilizer Rate Calculator (link)
  • Site-Specific Management Guidelines(link)
  • Stewardship Specifics (link)

Manitoba-North Dakota Zero Tillage Farmers Association (link)

Nutrient Stewardship – focus on the 4Rs (rate, timing, placement, source) (link)

Rocky Mountain Certified Crop Adviser Program (link)  

SARE Sustainable Agriculture Research & Education (link)

Saskatchewan Pulse Growers (link)

  • Nodulation and N-fixation Field Assessment Guide (link)


Colorado State University

Iowa State University

  • Non-traditional materials for crop production (link)

Montana State University

  • Ag Econ blog (link)
  • Agricultural Marketing Policy Center, fertilizer terminology and production facts (link)
  • Agricultural Research Centers (link)
  • Deficiency images on-line (link)
  • Economic N rate calculator for yield and protein goals (link)
  • Extension Field Office Directory (link)
  • FARMS (Farm And Research center Matching System; link)
  • Master gardener (link)
  • MFAC (Montana Fertilizer Advisory Committee; link)
  • PLACES (Precision Land And Climate Evaluation System; link)
  • Soil fertility recommendations (link)
  • Small Grain Variety selection tool (link); NARC canola variety trials (link)
  • Wheat basis tool (link), forecasted wheat prices, basis, and protein premium/discount

North Dakota State University

South Dakota State University (all these links are being moved - will update when available)

  • Fertilizer Seed Decision Aid, seed-placed safe rates (link)
  • Manure rate calculator (link)
  • Manure nutrient management tool (link)
  • Soil Fertility Extension (link)

Washington State University

  • Center for Sustaining Agriculture and Natural Resources (link)
  • Organic Farming Systems and Nutrient Management (link)
  • Soil Fertility and Management (link)

University of Idaho

  • Cover Crop Calculator - estimate plant available N over growing season (link)

University of Maryland

  • Organic Nutrient Value Calculator - value of the nutrients in organic sources (link)
  • RUSLE2 – calculate soil loss (link) (less intimidating than the NRCS page)

University of Wyoming

  • Soil Resource Program (link)
  • Reclamation and Restoration Center (link)


Soil Organic Amendments: How Much is Enough? (link)

Yara CheckIT mobile app with photo library of crops for i.d. of possible nutrient deficiencies (link)