Influence of an acid soil on the herbage yield and nodulation of five annual pasture legumes [clovers; medics].
1990
Evans J. | Dear B.S. | O'Connor G.E.
In glasshouse pot experiments, subterranean clover was the most acid tolerant legume, followed by murex medic and balansa clover (similar), persian clover and then barrel medic. All legumes except barrel medic produced at least 90 percent of maximum yield at pH 4.7; only subterranean clover produced more than 90 percent of maximum yield at pH 4.2. Establishment of nodules was more sensitive to acidity than indicated by relative yields of dry matter, especially in murex medic and persian clover. Average nodule weight usually increased at lower pH. The dry matter yields of murex medic and persian clover at lower pH were probably reliant on compensatory increases in nodule volume as nodule number declined with increasing acidity.
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