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existing nitrogen level

Catalogue: Ground Cover
A NEW web-based guide on soil nutrients, Fertiliser after the Drought , can give cash-strapped farmers practical advice on how to cut drought recovery times... "To underestimate existing nitrogen levels can lead to growers sowing an inappropriate crop - a potentially critical mistake for farms recovering from drought.".. For example, calculations of nitrogen need to include residual nitrogen from fertiliser applied in 2002, subsoil and topsoil nitrogen mineralisation - which can be accelerated after a drought - and nitrogen removed in 2002 crops," Dr Angus says...
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