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N-fixation capacity of white clover in permanent pasture

, : N-fixation capacity of white clover in permanent pasture. The efficiency of N utilization by grass and legume and on grass/clover swards: 41-42

In white clover given 60, 120, 180 or 240 kg N/ha, N fixation decreased as the rate of N increased and was high at the beginning of the growing period, but decreased after the 1st cut. Pastures established with clover but with low levels of N had a higher yield than those without clover but with 240 kg N there was no difference. Yields at different cuts showed less variation if clover was present. The effect of clover on yield decreased over the 3-yr period.

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