Spinach XXIX-3
Spinach Leafminer
Whitney S. Cranshaw
Leafminer
Identification (and life cycle/seasonal history)
The larval stages feed within leaves. The effects of feeding on plant health seem negligible, but the blotchy mines make greens less marketable.
Chemical Control
Egg laying occurs during early spring, with most damage occurring two or three weeks later. Insecticides should be applied before eggs are laid.
Product List for Defoliating Caterpillars: |
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Insecticide |
Product per Acre |
Preharvest Interval, remarks |
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Pounce 25WR1, Ambush 25WR1 Pounce 3.2R1 Ambush 2ER1 |
6.4-12.8 oz 4-8 fl oz 6.4-12.8 0 oz |
(1 day) All permethrin (Ambush, Pounce) formulations are Restricted Use. |
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Diazinon AG500 Diazinon 50W |
0.5-1.0 Pt 1-1.5 lb |
(10 days) Organophosphate insecticide. 24 hour reentry proposed. Not labelled for chemigation. |
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Cygon 400, Dimethoate 400 Dimethoate 267 |
0.5 Pt 0.67 pt |
(14 days). Four day reentry interval. Systemic insecticide. Organophosphate insecticide (dimethoate). Do not store below 45 degrees. |
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RRestricted Use Product. 1Labeled for chemigation |
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The information herein is supplied with the understanding that no discrimination is intended and that listing of commercial products, necessary to this guide, implies no endorsement by the authors or the Extension Services of Nebraska, Colorado, Wyoming or Montana. Criticism of products or equipment not listed is neither implied nor intended. Due to constantly changing labels, laws and regulations, the Extension Services can assume no liability for the suggested use of chemicals contained herein. Pesticides must be applied legally complying with all label directions and precautions on the pesticide container and any supplemental labeling and rules of state and federal pesticide regulatory agencies. State rules and regulations and special pesticide use allowances may vary from state to state: contact your State Department of Agriculture for the rules, regulations and allowances applicable in your state and locality. |
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Categories: Leafminers, Insects, Spinach
Date: 05/05/2002