Soil and Alfalfa Plant Characteristics as Affected by a Decade of Fertilization1
- Roger G. Hanson and
- John M. MacGregor2
The 10-year field study indicates annual top-dressings of K are needed to maintain a dense stand for high yields of quality alfalfa on sloping Port Byron silt loam. Total yield increases were related to total quantities of P or PK applied, with largest increases obtained from annual K with P top-dressings.
Contents of P and K in 10-year-old alfalfa were related to quantities of these elements applied. The P and K concentrations generally were highest in the third cutting and lowest in the second.
There appeared to be little movement of P below the surface 3 inches and little movement of K below 6 inches in Port Byron silt loam during the ten years of the experiment.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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