Extension Resources - Soil Fertility

• NEW!! Nutrient Budget Basics for Organic Farming Systems (eXtension)
• NEW!! Organic Potting Mix Basics (eXtension)
• Are livestock and forages needed on organic farms? (OACC)
• A better nitrogen use to improve organic wheat production (ICROFS)
• Budgeting for phosphorous and nitrogen with manure applications (OACC)
• The Canadian Farm Business Management Council's Organic Agriwebinars
  Please note: Registration with Agriwebinars is needed to view these online video presentations
  • Stock Free Organic Farming with Iain Tolhurst, COABC Seminar Series 2009
• Co-Dependent Nutrients (COABC)
• Crop establishment and soil fertility on Maritime organic grain farms (OACC)

• Determination of nutrient availability of organic fertilizers for potential use on greenhouse crop
  • Part 1
  • Part 2
• Economics of Manure Application (OMAFRA)
• Fertility Management for Organic Cereal Production (OACC)
• Fertility Management in Organic Crop Systems (Manitoba)
• Fertility status of organically managed fields (OACC)
• Green manure options for organic farmers (OACC)
• Green manure options - On-farm demonstration (OACC)

• Growing Legume Crops for Nitrogen (Manitoba)
• The Importance of Organic Matter to Soil Fertility and Crop Health (MOSES)
• Increasing phosphorus availability through green manure, composted manure and rock phosphate (OACC)
• Managing Potassium for Organic Crop Production (International Plant Nutrition Institute)
• Management of sweet clover for nitrogen supply, soil conservation and weed control (OACC)
• Manures for Organic Crop Production (ATTRA)
• Meeting the Phosphorus Requirement on Organic Farms (International Plant Nutrition Institute)

• Nitrogen Deficiency and Carbon: Nitrogen Ratios of Organic (OMAFRA)
• Nitrogen Sources for Organic Crop Production (IPNI)
• Nutrient status in relation to productivity on organic dairy farms (OACC)
• Nutrient Value of Crop Residue (Manitoba)
• OACC studies aim for sustainability in organic production - One prevalent question is how to address the issue of phosphorus deficiency in dairy production
• Organic Agriculture Offers Helpful Options to Manage Nutrients (OACC)
• Organic Crop Management and Soil Phosphorus (International Plant Nutrition Institute)

• Organic Soil Fertility (eXtension)
• Phosphate rocks influence green manure growth and soil phosphorus dynamics (OACC)
• Phosphorus Availablilty of Organic Dairy Farms: A Closer Look at the Role of Soil Microorganisms (OACC)
• Preventing nutrient deficiencies on Prairie organic farms (OACC)
• Searching for ways to add phosphorus to increase soil fertility (OACC)
• Soil fertility and nutrient budgets on organic dairy farms (OACC)
• Soil fertility affects weed and crop competition

• Soil Nutrient Management for Organic Grain Farms in Montana (Montana State University Extension) (PDF, 4.6MB)
• Soil P Status and Nitrogen Fixation on Organic Dairy Farms in Ontario and Nova Scotia (OACC)
• Soil phosphorus dynamics as affected by a green manure crop grown with phosphate rocks (OACC)
• Sustainable Organic Vegetable Systems: Evaluating Green Manure and Biowaster Composts (OACC)
• Whole Farm NPK Balances on Maritime Dairy Farms (OACC)
• World Phosphorous Use Crosses Critical Threshold (ScienceDaily)

en français