Pasture grass

H. V. A. Bushby, I. Vallis. and R. J. K. Myers, Dynamics of C in a pasture grass (Panicum maximum var. Trichoglume)-soil. sy.stem. Soil Biol. Biochem. 24 381 (1992). 

Air, water, soil, and plant (pasture grass hay, forage, cucurbits, citrus, pome fruit, tree nuts, fruiting vegetables, and cotton) and animal materials (tissues, milk, blood,... 

Operating parameters for pasture grass hay, forage, cucumbers, squash, and cantalope... 

Hoffman, F.O. et al. (1989) Pasture grass interception and retention of1311, 7Be and insoluble microspheres deposited in rain. Oak Ridge National Laboratory Report ORNL 6542, Springfield, Va. N.T.I.S. 

Calculations of TF values generally take into account the specific radionuclide activity in the surface 10 to 20 cm of the soil profile. This appears to be the case primarily because the bulk of root density is found in these surface layers, particularly in agricultural species such as wheat and pasture grasses, but also because, historically, radionuclide inputs from atmospheric fallout have contaminated soil surface layers with minimal downwards movement through the profile taking place even over protracted periods. 

Pasture grasses and small grains are symptom-free even at leaf concentrations of several hundred parts per million of fluoride. Thus, the absence of injury symptoms on a plant does not necessarily mean that this plant has not been exposed to a pollutant in the environment in which it is growing, and such a symptomless plant may actually contain high concentrations of a pollutant like F. The accumulated fluoride is not evenly distributed, but tends to accumulate in the leaf tips and margins (18, 23, 24). Tips of oat leaves may contain 10-100 times as much F as the basal portion (15). 

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