Browsing Rangeland Ecology & Management / Journal of Range Management by Authors
Organic Matter, N, and Base Accumulation Under Pensacola BahiagrassBeaty, E. R.; Tan, K. H. (Society for Range Management, 1972-01-01)A deep and unfertile sandy soil in the Georgia Coastal Plain from which the top soil had been removed was seeded to Pensacola bahiagrass in 1967 and allowed to grow until 1970. No harvests were made, and no fertilizer was applied. When sampled in 1970, the plots under grass contained 23.1% more N than did fallow plots. The soil organic matter content to 12 inches deep in the soil profile had more than doubled under the sod, and bases had been accumulated in the soil surface under sod but were concentrated lower in the soil profile under fallow.
Relationship Between Carbohydrate, Nitrogen Contents, and Regrowth of Tall Fescue TillersBahrani, J.; Beaty, E. R.; Tan, K. H. (Society for Range Management, 1983-03-01)Nitrogen and water-soluble carbohydrate contents of Kentucky 31 tall fescue (Festuca arundinaceae Schreb) tillers were determined on a regrowth following clipping to a 2.5-cm stubble. There was a sharp decline in water-soluble carbohydrates of tillers as a result of clipping and N fertilization. Dry matter N content increased during the same time. The reduced carbohydrate content for clipped tillers lasted for some 10 days following clipping. After the initial decrease, water-soluble carbohydrate content in tillers increased for the next 80 days. The negative correlation between tiller N and carbonydrate content suggested that initial tiller regrowth was obtained partially from carbohydrate reserves in addition to current photosynthate production. N application immediately following clipping is at a time of low carbohydrate content and could well cause stand reduction.
Root-Herbage Production and Nutrient Uptake and Retention by Bermudagrass and BahiagrassBeaty, E. R.; Tan, K. H.; McCreery, R. A.; Jones, J. B. (Society for Range Management, 1975-09-01)Studies were conducted to determine the effect of clipping and N fertilization practices on dry matter yield and macro-element uptake and retention of Bermudagrass and Bahiagrass grown on Inceptisols. Field experiments were conducted from 1963 to 1971 using a Montevallo soil sprigged with three varieties of Bermudagrasses and seeded with two varieties of Bahiagrasses. The results indicated that Bahiagrass outyielded Bermudagrass in root and herbage production. The root-herbage ratio of Bermudagrass increased with increasing N fertilization, whereas this ratio decreased for Bahiagrass. Bermudagrass differed from Bahiagrass in N, P, K, Ca and Mg content. The Ca and Mg content in both roots and herbage of Bermudagrass decreased with N fertilization, but similar N fertilization increased these nutrient elements in Bahiagrass. There was a positive correlation between N content and K/Ca molar ratio in Bermudagrass herbage.