Soil remains ‘black box’ in nitrogen advice
What amount of nitrogen is advised based on the vegetation index acquired through satellite, drone, aircraft or sensors and how much is down to the grower’s intuition?
US contractor makes more efficient use of nitrogen
One Minnesota-based contractor has improved his customers’ yields and upped nitrogen efficiency by switching to a side-dressing system.
Variable fertiliser approach raises dry-land maize yields
Variable-rate nitrogen fertiliser applications are building up poorer land and improving production in the better areas on farms across Africa.