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higher nitrogen loss

Catalogue: Ground Cover
Top-dressing nitrogen onto crops, fallows and pastures may not be as risky as is generally thought if rain does not fall soon after application... Nitrogen volatilisation losses were assessed in 15 paddocks covering four scenarios: top-dressing wheat; autumn fallow broadcasting ahead of winter cropping; spring fallow broadcasting ahead of summer cropping; and autumn and spring fertiliser application to a grass-based pasture... How much is lost depends on a range of factors including rainfall amount, soil moisture, temperature, pH, naturally occurring lime in the soil, ground cover, wind, soil-clay percentage and fertiliser type...
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