Should farmers apply fertilizer according to when their daffodils are in flower? Utilizing a "farmer-science" approach to understanding the impact of soil temperature on spring N fertilizer application in Wales
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Perennial ryegrass starts growing when soil temperatures reach 5.5°C for five consecutive days; applying N fertilizer before this risks environmental losses. To test whether daffodil flowering signified when to apply N fertilizer, farmers volunteered to take ... ...
