Efficiency with which yellow serradella and subterranean clover use superphosphate on a deep sandy soil near Esperance, Western Australia
1986
Bolland, M.D.A. (Western Australian Dept. of Agriculture, Perth. Div. of Plant Research)
Phosphorus applications ranged from 0 to 90 kg per ha. For each legume there was an approximately linear relationship between the amount of P applied and either the yield of dry herbage and seed, or the P content of dry herbage. The late-flowering serradella strain DP4 utilised P more efficiently to produce dry herbage, and subterranean clover cv. Seaton Park to produce seed. Early serradella cv. Pitman was the least efficient at ulilising P for dry herbage production in Sept., and Seaton Park in early Oct. For dry herbage production in Sept. and early Oct., the relationship between yield and P content was similar for all 3 legumes, and yield depended on the amount of P present in the herbage. For each legume, the rate of P applied had no effect on seedling emergence, the period between sowing and commencement of flowering, senescence or the weight per seed.
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