The chemical composition, growth, and certain deficiency symptoms of carpet grass, Axonopus affinis, as affected by lime and fertilizer mixtures
1942
Blaser, R.E. | Stokes, W.E.
The calcium, phosphorus, and potassium content and the growth of carpet grass grown on a Coastal Plain soil (Bladen fine sand) was significantly better with a top dressing of lime and complete fertilizer than with no fertilizer. The omission of lime, phosphorus, or potash from the fertilizer treatment produced carpet grass which was significantly lower in calcium, phosphorus, or potassium, respectively. The omission of any one of these three fertilizer elements also resulted in significant grass yield reductions. When phosphorus was omitted from the lime and fertilizer mixture, the carpet grass was dull green to purplish green in color, and it is believed that this is characteristic of phosphorus deficiency. Phosphorus-deficiency symptoms also occurred without fertilizer, but the presence of calcium, potassium, and nitrogen altered the phosphorus-deficieny symptoms when compared with unfertilized grass. Potassium-deficiency symptoms (burning of blade tips) were present when potassium fertilizer was omitted from the lime and fertilizer treatment. Bladen fine sand is deficient in phosphorus, nitrogen, potassium, and calcium. The relative importance of the elements is approximated by the order in which they are given.
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