Slurry is an important source of N, P and K, and its effective use is essential to balancing soil fertility levels. To maximise the nutrient value of either cattle or pig slurry over the coming weeks/months a number of decisions must be made. Firstly, where on the farm should slurry be applied to maximise slurry P and K? Secondly, when is the most efficient time to apply slurry to maximise N recovery?Targeted application of slurry based on soil test results will ensure efficient use of early-season P and K in satisfying grass requirements. The typical value of 1,000gal of cattle or pig slurry applied by splashplate in springtime has an available N-P-K content equivalent to a 50kg bag of 6-5-32 and 13-7-20, respectively. For example an application of 1,000-2,000gal/ac of either slurry will supply sufficient N, P and K for early grass production.