Pecan Nut Casebearer Forecast

 

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Suggested insecticides to control pecan nut casebearer.

 

Concentrate per

 

Insecticides

100 gal

acre

Remarks

Bacillus thuringiensis*
See below product names

 

See product label

Livestock grazing permitted.

Carbaryl**
Sevin® 80S
Sevin® 50W
Sevin® 4F
Sevin® XLR


1.25-3 lb
2-5 lb
1-2.5 qt
1-2.5 qt

 

Livestock grazing permitted.

Chlorpyrifos
Lorsban® 4E

 


1.5-4 pt


Do not graze livestock.

Malathion
Malathion® 57% EC


1-2 pt

 


Livestock grazing permitted.

Methoxyfenozide
Intrepid® 2F

 


4-8 oz


Livestock grazing permitted.

Phosmet
Imidan® 70 W


2-3 1/8 lbs

 


Do not graze livestock.

Spinosad
Entrust***


0.3-0.75 oz


1.25-3 oz


Livestock grazing permitted.

SpinTor® 2SC

 

4-10 oz

 

Tebufenizide
Confirm® 2F

 


8-16 oz


Do not graze livestock in treated orchard.

*Several insecticides including Javelin® WG, Dipel® ES and others contain the active ingredient Bacillus thuringiensis and are labeled to control pecan nut casebearer in pecan. The active ingredient in these insecticides is the toxin of the bacteria Bacillus thuringiensis, or Bt, which kills only caterpillars of moths and butterflies. Javelin® WG and Dipel® ES have low toxicity to humans, wildlife and beneficial insects; treated orchards can be grazed. Sunlight degrades these microbial insecticides, so their period of residual control is shorter than that of most other insecticides. Also unlike some insecticides, B.t.'s do not kill casebearer moths. Accurate treatment timing to target hatching larvae and thorough spray coverage are especially critical for control with B.t. insecticides.

**Survey orchard for increases in aphid or mite infestations after using carbaryl.
***The spinosad formulation in Entrust® is classified as an organic substance by the USDA National Organic Standards Board.