Subjects: *Nitrogen fertilizers; *Fertilizer application; *Agriculture
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Subjects: *Phosphorus; *Sustainability; *Crop yields
Subjects: *Crop yields; *Farms; *Agricultural productivityUkraine
Subjects: *Soil erosion; *Agriculture; *Crop yieldsSpain
Subjects: *Phosphorus in soils; *Soil dynamics; *Crop yieldsCanada; Québec (Province); Ontario
Subjects: *Heavy metal toxicology; *Agriculture; *Crop yields
Subjects: *Agriculture; *Crop yields; *Crop losses
Subjects: *Agriculture; *Native plants; *PrairiesMidwest (U.S.)
Subjects: *Climate change adaptation; *Crop yields; *AgricultureTanzania
Subjects: *Cropping systems; *Soil biology; *Crop yields