. An assessment of the forest and range land situation in the United States. Forests and forestry United States; Forest management United States; Rangelands United States. Deteriorated range can be restored. Research leading to biological controls of undesirable plants and improved varieties of grasses, forbs and shrubs could greatly facilitate restoration efforts. manipulate range ecosystems for the betterment of associated resources and uses seem to have fewer un- desirable side effects than do use of pesticides or herbi- cides. Further testing is required to determine their effectiveness an
. An assessment of the forest and range land situation in the United States. Forests and forestry United States; Forest management United States; Rangelands United States. Deteriorated range can be restored. Research leading to biological controls of undesirable plants and improved varieties of grasses, forbs and shrubs could greatly facilitate restoration efforts. manipulate range ecosystems for the betterment of associated resources and uses seem to have fewer un- desirable side effects than do use of pesticides or herbi- cides. Further testing is required to determine their effectiveness and application. New germ plasm and improved varieties of grasses, forbs, shrubs, and, in particular, nitrogen-fixing plants could greatly en- hance productivity and forage quality characteristics of many ranges. Many factors contribute to inefficient use of range forage. Prominent among these are climatic fluctua- tions and their effects on forage quality and quantity, and inefficient digestion by herbivores. When and to what extent forage can be used most efficiently while maintaining ecosystem stability, and what class or mix of herbivores can most effectively convert forage into a desirable commodity need additional testing. Knowledge gained through basic morphological and physiological studies of plant species is needed to determine how a species and the ecosystem will respond to management alternatives, and to provide guidelines for proper management and effective utiH- zation. Efficiency of animals in converting forage into animal protein needs to be increased. This can be done through additional knowledge of specific food habits and nutritive requirements of herbivores. Improved animal management to include such bene- fits as control of internal and external parasites, 193. 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
Size: 1687px × 1480px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, booksubjectforestsandforestryunitedstates
