Effect of different lime levels on the growth and composition of some legumes
1940
Vanderford, H.B.
Some Grenada silt loam which was low in exchangeable bases was treated with calcium carbonate so that 25, 50, 75, and 100% of the titratible hydrogen was neutralized. Soybeans, Korean lespedeza, and sweet clover were grown on the soil which was treated with calcium carbonate in order to obtain five base levels, including a check series for each crop. The yields of soybeans, lespedeza, and sweet clover increased with increasing additions of calcium carbonate, but the increase was not of a uniform magnitude for each of the three legumes. The calcium content and the total amount removed by the plants increased with each increasing increment of calcium in all the crops grown. The percentage of nitrogen did not fluctuate greatly in any case, but the variations were greater below pH 6 than above pH 6. The total nitrogen removed by the lespedeza and soybeans increased with each addition of calcium carbonate. The phosphorus content and the total amounts removed by the soybeans and sweet clover decreased with increasing increments of calcium carbonate. The total amount removed by the lespedeza increased with each addition of calcium carbonate. Korean lespedeza gave greater responses to application of calcium and seemed to be more efficient in the absorption of nutrients than soybeans and sweet clover.
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