. Effect of burning on South Florida range. Forest influences; Forest fires Florida; Forests and forestry Florida. Chemical analyses of herbage from adjacent grazed range indicated that grazing may delay a rapid drop in protein. The level of protein in grazed herbage collected on May 30, 1957, was about the same as in ungrazed herbage collected six weeks earlier (table 2). Phosphorus--borderline for proper animal nutrition 3 weeks after burning--was deficient in all subsequent samplings. In no case did calcium meet minimum requirements for cattle maintenance. Most ranchers feed mineral supplem
. Effect of burning on South Florida range. Forest influences; Forest fires Florida; Forests and forestry Florida. Chemical analyses of herbage from adjacent grazed range indicated that grazing may delay a rapid drop in protein. The level of protein in grazed herbage collected on May 30, 1957, was about the same as in ungrazed herbage collected six weeks earlier (table 2). Phosphorus--borderline for proper animal nutrition 3 weeks after burning--was deficient in all subsequent samplings. In no case did calcium meet minimum requirements for cattle maintenance. Most ranchers feed mineral supplements high in phosphorus and calcium year-round to cattle on native range. Shrubs, especially saw-palmetto, are more abundant on many south Florida ranges than data from this study would indicate. Leaves of saw- palmetto emerging on recently burned ranges are grazed by cattle, and mature fronds are occasionally cropped heavily when a sufficient variety or volume of forage is not available. Unfolding leaves were higher in crude protein and phosphorus, but lower in lignin, than mature fronds. Although shrubs generally contained more crude protein, calcium, and phosphorus than understory vegetation, their lignin content was also higher. Consequently, the nutrients in saw-palmetto and other woody growth were probably less available. On some sites where marl is near the soil surface, cattle may heavily graze palmettoes because of the higher-than-average calcium content. Heavy grazing (foreground) delays the rapid drop in protein in recently burned Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hilmon, J. B; Lewis, Claire E; Southeastern Forest Experiment Station (Asheville, N. C. ). Asheville, N. C. : U. S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station
Size: 1897px × 1317px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiod, booksubjectforestinfluences
