Carbaryl, Carbofuran, and Methomyl - National Marine Fisheries ...

methomyl are 32.4 lb a.i./acre/year (alfalfa) and 21.6 lb a.i./acre/year (broccoli raab,
cabbage, and Chinese cabbage) for agricultural crops; 5.4 lb a.i./acre/year (peaches) for
orchards; and 0.22 lb a.i./acre/application for nonagricultural uses (no maximum
application/acre/year is provided on the nonagricultural use labels). All orchard and most
agricultural uses involve foliar application. The only granular agricultural/orchard use is
for corn which also has a foliar use (EPA 2007).
All non-agricultural outside uses for methomyl in California, Idaho, Oregon, and
Washington are limited to scatter baits and bait stations around agricultural (e.g., animal
premises) and commercial structures and commercial dumpsters, where children or
animals are not likely to contact the pesticide. The scatter bait can also be mixed with
water to form a paste which can be brushed onto walls, window sills, and support beams.
The maximum application rate for the scatter bait use is 0.22 lb a.i./acre (0.0025 lb
a.i./500 ft 2
). However, it is unlikely that applications would involve a full acre as the
outside use of the scatter bait is limited to areas around structures and dumpsters. No
minimum application interval or maximum application rate per year is provided on the
scatter bait labels (EPA 2007).
Table 3. Examples of registered uses and application rates for methomyl in California,
Idaho, Oregon, and Washington (EPA 2007).
Application
Use Site
Commercial dumpsters; poultry houses;
unspecified commercial sites; outside
commercial uses: feedlots, dairies, stables,
broiler houses, hog houses, livestock barns,
meat processing establishments, poultry
processing establishments, beverage plants,
canneries, food processing establishments,
kennels, dumpsters, restaurants, supermarkets,
commissaries, and bakeries.
Maximum Single
Application Rate
(lb a.i./acre)
35
Maximum
Number of
Applications
Minimum
Application
Interval
(days)
Maximum per
year
(lb a.i./acre)
0.22 Not specified 1-3 Not specified
Alfalfa 0.9 10 x 9 crops 5 32.4
Asparagus 0.9 5 7 4.5
Avocado 0.9 2 5 0.9
Barley 0.45 4 5 1.8
Beans 0.9 10 5 4.5
Broccoli 0.9 10 x 3 crops 5 21.6
Cabbage 0.9 15 x 3 crops 2 21.6
Corn 0.45 28 x 3 crops 1 18.9
Lettuce 0.9 8 x 2 crops 2 14.4