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OGM : de quoi s’agit-il? Peuvent-ils être consommés en toute sécurité? Qu’est-ce que l’agriculture biologique? Comment les animaux comme les poulets ou les bovins sont-ils élevés?

snapAG offre aux élèves et aux étudiants des ressources sur des sujets d’actualité liés à l’industrie agricole, comme les produits biologiques, les biotechnologies, les OGM, l’élevage, et plus encore. 

Explorez les tendances de l’agriculture au Canada en parcourant les rubriques ci-dessous.

Fertilizer

Fertilizer

Plants require nutrients to grow. As plants grow, they use nutrients from the soil. When they are harvested, they take those nutrients with them and so they need to be replenished for the next crop.

Fertilizer comes from nature

  • Nitrogen fertilizer is made using natural gas and nitrogen from the air.
  • Potassium fertilizer comes from salts from evaporated oceans.
  • Phosphorus fertilizer comes from fossilized sea remains found in ore deposits.
  • Sulfur fertilizer comes from fossil hydrocarbons (often found in areas with high volcanic activity)

These naturally occurring minerals are manufactured into a form that plants can readily use –referred to as “synthetic” or “conventional” fertilizers or nutrients.

Compost and manure are example of “organic” nutrients. Many farmers recycle manure from animal barns or pens to improve their soil.

The “4 R’s”

Farmers are committed to the “4R Nutrient Stewardship” – applying the Right rate at the Right nutrient source at the Right time in the Right place. 4R Nutrient Stewardship is a science-based approach that focuses on increased production, environmental protection and improved sustainability.

Sites Web pour approfondir

Notes de bas de page

  1. Fertilizer Canada. (2017). “What Is Fertilizer?”
  2. Agriculture in the Classroom – SK. (2015). “Food Production – Ways to Farm” from the classroom resource Feeding a Growing World: Exploring Saskatchewan’s Role in Global Food Security.
  3. Fertilizer Canada. (2017). “What Is 4R Nutrient Stewardship?”
  4. Alberta Agriculture and Forestry. (January 1, 1993). “Legume Green Manuring.”
  5. Fertilizer Canada. (2017). “FAQS – Fertilizer Fundamentals.”

Les références

Crédit photo

"Corn stunted from nitrogen deficiency", Page 1 – Shanna Shroeder 

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