N has solid value
THE value of applying solid nitrogen to milling wheats was reconfirmed in trials in North Yorks this season, says ICI Fertilizers.
Nitram was applied to Cadenza at flag leaf emergence (GS37) at 40kg/ha (32 units/acre). That boosted grain protein from 10.7% to 11.8%, despite dry conditions and sandy loam soils, not usually associated with high protein levels, says ICIs Richard Martin.
Yield was unaffected, control and treated plots giving 8.65t/ha (3.5t/acre). The extra fertiliser gave a twofold return on cost. *