25
than in 195). Another possible explanation would be the reduced effect of
plowing on lowering the average Sr90 level at root depth in successive years,
The data in Figure 5 indicate that the sampling was surprisingly good,
since the only considerable scatter occurs during the sharp spring rise,
The
monitoring of milk from large dairies appears to provide a good record of plant
and dairy product activity levels over the growing season for a given area and
also provides a basis for comparison of the activity of plants and dairy products
t
from widely scattered areas.