PRECAUTIONS


 (1) To avoid danger from drift, do not spray water hyacinths with
2,4-D when susceptible crops are growing at a distance of less than .
mile from the area to be treated or when the wind movement is greater
than 10 miles per hour, including the speed of the gusts. Due to the
volatility of esters, their use for spraying canals is not recommended.
The safest time for spraying will be after the harvest of sensitive crops.

 (2) Water from canals treated with 2,4-D should not be used for
spraying or irrigating sensitive crops until a test indicates that this
water is np longer contaminated with 2,4-D. Such a test can be run by
spraying the canal water onto young tomato plants and by observing the
results obtained. If, under normal temperature, bending of the stem of
the plant does not occur within 24 hours the water is safe.

 (3) For best results, 2,4-D in a water solution should not be
applied when rain is expected within 6 hours after spraying.

 (4) Water hyacinths should be treated with 2,4-D whenever possible
when temperatures are high.

 (5) Sprayers which have been used for 2,4-D should never be used
for spraying susceptible crops.

 (6) When feasible, operate spray machines with a coarse spray at
low pressure in order to reduce drift.

 (7) Maintain the spray boom at as low a level as possible to obtain
a good spray pattern and to avoid spray drift.

 (8) 2,4-D should not be stored in the same building with agricul-
tural chemicals, products, or equipment.






 For information on use of 2,4-D on crop land, consult Bulletin 532,
University of Florida Agricultural Experiment Stations; "2,4-D FOR POST-
EMERGENCE WEED CONTROL IN THE EVERGLADES," which may be obtained on
request from the Agricultural Experiment Station, Gainesville, Florida.