Superphosphate maintains soil fertility and beef production on grazed white clover pastures in the subtropics. 2. Liveweight responses of beef cattle
Growth of cattle was measured between Annual liveweight gain of steers at the low stocking 1974-75 and 1980-81 on a white clover (Trifolium rate (1.67lha) without superphosphate declined from repens) and carpet grass (Axonopus affinis) pasture 165 kglsteer in year 1 to 38 kglsteer in year 7, receiving superphosphate applied at 0, 12, 24, and while 24 kg P/ha maintained liveweight gain at 48 kg P/ha annually. Hereford weaner steers grazed the 120-220 kglsteer. Annual liveweight gain was negatively pastures at 1.67, 2.5, and 3.3 steersha. Linear responses related to stocking rate, averaging -31.3 kglsteer for each to superphosphate and stocking rate were significant increment in stocking rate. Calculated stocking rates (P
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