Proceedings of the Sixty-first Annual Meeting of the Northeastern ...

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THE IR-4 PROJECT: UPDATE ON HERBICIDE REGISTRATION. M. Arsenovic, F.P.
Salzman, D.L. Kunkel, and J.J. Baron, IR-4 Project, Rutgers, The State Univ. of New
Jersey. Princeton.
ABSTRACT
The IR-4 Project is a publicly funded effort to support the registration of pest
control products on specialty crops. The IR-4 Project continues to meet grower's needs
for weed control options, primarily with mature-market herbicides since the adequate
selectivity of specialty crops to many of the recently introduced herbicides remains a
challenge. The Pesticide Registration Improvement Act (PRIA) continues to effect IR-4
submissions and EPA review of packages. IR-4 submitted herbicide petitions to the
EPA from October 2005 to September 2006 for: desmedipham on garden beet and
spinach; foramsulfuron + isoxadifen-ethyl on sweet corn and popcorn; mesotrione on
cranberry; pronamide on chicory, Belgian endive, dandelion, and berry group; and s-
metolachlor on winter squash and pumpkin. From October 2005 through September
2006, EPA has published Notices of Filing in the Federal Register for: bentazon on
peach and nectarine; clethodim on leafy greens subgroup, cilantro, legume vegetable
group, herb subgroup, asparagus, flax, hops, safflower, and sesame; desmedipham on
garden beet and spinach; dimethenamid on leek, green onion, Welsh onion, shallot
(fresh leaves), grass (forage, fodder, and hay) group; diuron on prickly pear cactus and
mint; ethofumesate on carrot (use in Washington and Oregon), garden beet, dry bulb
onion, garlic, shallot (bulb and fresh leaves); fluroxypyr on dry bulb onion, shallot (bulb),
and garlic; fomesafen on dry bean and snap bean; glyphosate on safflower, sunflower,
Indian mulberry, and legume vegetable (except soybean) group; lactofen on fruiting
vegetable group and okra (Southeast only); mesotrione on cranberry; pendimethalin on
green onion, leek, Welsh onion, shallot (fresh leaves), fruiting vegetable group, pome
fruit group, stone fruit group, juneberry, pomegranate, and strawberry (perennial);
phenmedipham on spinach; sethoxydim on root vegetable (except sugar beet)
subgroup, radish tops, turnip tops, buckwheat, borage, dill, and okra; and s-metolachlor
on pumpkin and winter squash. EPA established tolerances from October 2005 though
September 2006 for: dimethenamid on green onion, leek, Welsh onion, and shallot
(fresh leaves); ethofumesate on carrot (use in Washington and Oregon), garden beet,
dry bulb onion, garlic, shallot (bulb and fresh leaves); fomesafen on dry bean and snap
bean; flumioxazin on strawberry; paraquat on cucurbit vegetable, dry bulb onion, ginger,
and okra; pendimethalin on carrot, citrus fruit group, tree nut group, pistachio, mint,
green onion, leek, Welsh onion, shallot (fresh leaves), fruiting vegetable group, pome
fruit group, juneberry, pomegranate, and strawberry (perennial); s-metolachlor on
pumpkin and winter squash; and terbacil on watermelon.
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