A Comparison of Coastal and Common Bermudagrasses (Cynodon dactylon (L.) Pers.) in the Piedmont Region. II. Effect of Fertilization and Crimson Clover (Trifolium incarnatum) on Nitrogen, Phosphorus, and Potassium Contents of the Forage1
- William E. Adams,
- Matthias Stelly,
- H. D. Morris and
- Charles B. Elkins2
Common bermudagrass forage grown with and without crimson clover contained significantly higher percentages of N, P, and K than Coastal bermudagrass forage similarly fertilized. The N content of the grass forage was increased by each increment of N applied, ranging from approximately 1.6% N with no N fertilization to 2.7% N at the 448-kg/ha N rate. The P and K contents of both grasses were also increased by increasing levels of fertilization.
Harvest date had a pronounced effect on the N. P, and K contents of the grass forage, which peaked at the July harvest.
Coastal bermudagras recovered more nutrients from the soil than common bermudagrass—up to 86% of the applied N, up to 46% of the applied P, and as much as 191% of die applied K. This greater nutrient uptake by Coastal was a result of the higher yields obtained with this grass.
The P and K contents of crimson clover grown in association with the grasses were significantly increased by fertilization. The K content of crimson clover grown with common bermudagrass was significantly higher than that of crimson clover grown widi Coastal bermudagrass at most fertility levels.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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