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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 Forage 1
Author(s) -
Adams William E.,
Stelly Matthias,
Morris H. D.,
Elkins Charles B.
Publication year - 1967
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1967.00021962005900030023x
Subject(s) - cynodon dactylon , forage , human fertilization , agronomy , phosphorus , nutrient , biology , potassium , zoology , chemistry , ecology , organic chemistry
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 the 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 with Coastal bermudagrass at most fertility levels.