-9-

 23. Do not spray more than 40 50 acres per day in any one unit unless
the operation is isolated (1 mile) from cropped land.

 24. Do not apply if rain is expected within 4 6 hours.

 25. Research has established that actual physical drift of sprays is
the major cause of 2,4-D damage to adjacent crops; volatilization appears
to play a relatively minor role, especially when salt formulations are
used.

 additional references:

 Florida Agricultural Experiment Station Bulletin 532.
 2,4-D for Post Emergence Weed Control in the Everglades, by Charles
C. Seale, John W. Randolph and V. L. Guzman, 1953.