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Little River County, Arkansas

Information provided for informational purposes only

Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated.

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Pesticide Table for the Ouachita Rock-Pocketbook | About the Ouachita Rock-Pocketbook
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Ouchita Rock-Pocketbook

Table of Pesticide Active Ingredients

Active Ingredient CODE
CHLORPYRIFOS
Peanuts
43
IPRODIONE
63
PROPICONAZOLE
Rice
63
All Other Uses
1
Code Limitations
1 Do not apply this pesticide within 20 yards from the edge of water within the shaded area shown on the map for ground applications, nor within 100 yards for aerial applications.
43 Do not apply this pesticide within 100 yards from the edge of water within the shaded area shown on the map for ground applications, nor within 1/4 mile for aerial applications.
63 Do not apply this pesticide within the shaded area shown on the map, within 1000 feet of the shaded area for ground applications, nor within 1 mile for aerial applications. When using in a rice field which drains into the shaded area, do not flood the field for 3 days after the application. Once flooded, allow 7 days to pass until the field is drained.

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Ouachita rock-pocketbook[Arkansas wheeleri]

The Ouachita rock-pocketbook is a medium-sized freshwater mussel, whose shell reaches up to 3.9 inches in length. The exterior is chestnut brown to black and has a silky texture. This mussel is also known by the name Wheeler's pearly mussel. It is usually found in muddy or rocky bottoms in side channels or backwaters with little or no current. The Ouachita rock-pocketbook, like other freshwater mussels, feeds by filtering food particles from the water.

Historically, the Ouachita rock-pocketbook was once found in healthy numbers in the Kiamanchi River in southeastern Oklahoma, the Little River near the Oklahoma-Arkansas border, and the Ouachita River. Currently, this mussel remains in the Kiamichi River and the Little River, however distribution and population estimates have been drastically reduced to small isolated populations over an estimated range of 85 river miles.

The decline of the Ouachita rock-pocketbook is attributed to widespread water pollution and the construction of numerous reservoirs. In some areas, water quality is too poor to allow any mussel species to survive. The Ouachita rock-pocketbook is also threatened by an introduced species, the Asiatic clam, currently found in the Hugo Reservoir but known to be moving upstream.

Mosely, C.J. (ed.), The Official World Wildlife Fund Guide to Endangered Species, Beacham Publishing Inc, Washington, DC. pp. 1441-1442.

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