4. Improved fertilizer effect of nitrogen - trials in winter wheat 020406080100 Cattle slurry Pig slurry Digested slurry N-utilization, % (fertilizer equivalent)

6. Utilization of nitrogen in solid fraction 020406080 Spring barley, applied spring Winter wheat, applied autumn Winter wheat, applied spring 100 N-utilization, % (fertilizer equivalent)

7. Utilization of nitrogen in liquid fraction, spring application 020406080100 Spring barley, injected Spring barley, trailing hoses Winter wheat, injected Winter wheat, trailing hoses N-utilization, % (fertilizer equivalent)

9. Cattle slurry to spring barley, 9 trials, 2000-2001 Yield, hkg grain per ha No nitrogen Trailing hoses + harrowed Injected before plowing Injected after plowing 34,4 43,2 47,7 47,2

12. Pig slurry to winter wheat, 11 trials, 2002-05 50 N + 100 kg NH 4 -N per ha Yield, hkg grain per ha Damage, hkg per ha Excl. damage Incl. damage Trailing hoses72,169,22,9 Injection74,869,05,8

16. Cattle slurry to grass for silage, 6 trials, 2004-05 80 kg NH 4 -N per ha Yield, 2.+.3 cut, feeding units per ha Damage, hkg per ha Excl. damage Incl. damage Trailing hoses37,437,00,5 Injection38,238,10,1

17. Net economy for injection compared to trailing hoses

18. Danish recommendations on injection: Spring sown crops ………..…. Grass …………………………. Winter cereal ………….………