ONTARIO GRAIN FARMER CROP SIDE 12 Livestock farmers have always recognized the value of manure in building soil fertility and supporting crop production. Historically, crop producers without access to this resource have looked on with envy. Today, though, a wide range of organic amendments—many sourced from outside agriculture—are available. These materials can improve soil fertility, boost organic matter, and support sustainable cropping systems. However, not all amendments are created equal. Each product has unique characteristics, and the best choice depends on the specific needs of the field, logistics of application, and, of course, cost. Exploring organic options for soil fertility and health Christine Brown Crop side with... Christine Brown, Field Crop Sustainability Specialist, Ontario Ministry of Agriculture, Food and Agribusiness GUARANTEED ANALYSIS Many products available in Ontario are registered under the Canadian Food Inspection Agency (CFIA) and carry a label guaranteeing minimum nutrient content. In practice, materials often contain more nutrients than listed, so sampling during application is essential for accurate nutrient credits and planning. Although CFIA-registered materials are classified as fertilizers, they are organic amendments and should be managed using the same 4R nutrient stewardship principles as manure. Application of any material containing crop nutrients should never occur on frozen or snow-covered soils. Poultry compost being applied in Middlesex County (photo courtesy Christine Brown).
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