With ammonium nitrate at its highest price ever, and also difficult to source, farmers are thinking differently about buying in a bit of nitrogen ready for the spring.Grass will grow once soil temperature hits around 5°C,and clover starts growing at around 8°C. Artificial nitrogen (N) is used to help the grass grow until the clover starts growing and fixing/ releasing nitrogen.The nitrogen produced and fixed into the soil by clover during the previous year has been taken up by winter growth. This will be particularly relevant for this year, as the warmer autumn meant grass grew for longer.
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