Organic nitrogen is important for plant growth, but too much of it can cause a range of problems. Over-fertilization, improper composting, or runoff from nearby agricultural areas can all contribute ...

Research into a nitrogen isotope-based testing system being pioneered in Britain could provide a vital new tool in ensuring valid organic certification for food and drink products. According to the ...

With bagged ammonium nitrate fertiliser prices rising above £600/t, soil mineral nitrogen testing has become essential for one Hampshire farm manager as he seeks to optimise nutrition across all his ...