sols
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6
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cropping systems
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4
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land use
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4
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soil conservation
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4
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soil management
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4
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soils
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4
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agriculture
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3
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conservation
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3
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aménagement
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2
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engrais et amendements
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2
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fertilizers
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2
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sol, utilisation du
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2
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systèmes de culture
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2
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agricultural conservation
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1
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agricultural development projects
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1
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aliments
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1
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amã©nagement
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1
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approvisionnement
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1
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canada
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1
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canada. agriculture canada
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1
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développement agricole
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1
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environmental protection
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1
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land capability for agriculture
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land use, rural
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1
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soil degradation
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1
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1
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