The nutrient fluxes, pools, and balances for N, S, P, and Ca were estimated for two sheep#x2010;grazed mixed species studies on a Pukaki/Tekapo high#x2010;country soil from measurements during the 10#x2013;15 th years following initial development. One compared 30 combinations of 5 superphosphate rates (0#x2013;500 kg ha#x2010;1yr#x2010;1) #xD7; 3 stocking rates #xD7; 2 stocking methods #xD7; 2 spatial replications; the other compared 27 combinations of P and S fertiliser (0#x2013;100 kg element ha#x2010;1yr#x2010;1). The stock off#x2010;take under zero fertiliser was 1.1,0.1,0.2, and 0.4 kg ha#x2010;1yr#x2010;1for N, S, P, and Ca, respectively. Fertiliser inputs exceeded stock off#x2010;takes by 4#x2013;100#x2010;fold in fertiliser treatments. The 10#x2010;year stock off#x2010;take was similar to the 1#x2010;year spring shoot pool. C and N were principally in the soil fraction. Estimated N fixation was 150#x2013;223 kg N ha#x2010;1yr#x2010;1in the fertilised treatments. Increases in the components of the S pools in the shoots and soil to 40 cm accounted for 46#x2013;56 of the applied S in the dryland fertilised treatments and 21 in the irrigated high fertiliser treatment. Residual elemental S accounted for 11#x2013;21 of applied S. Much of the P and Ca were in the coarse organic matter pools. P and Ca pools did not increase in proportion to fertiliser rates. There was an apparent loss of total P to levels similar to double the applied fertiliser rates, possibly from change in datum sampling depth due to measured soil expansion. There was less than 2 movement of nutrients into sheep camps.
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