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ENY708 Summary of Peanut Insecticide Options for Florida1 H.E. Jowers and R.K. Sprenkel2 1. This document is ENY-708, one of a series of the Entomology and Nematology Department, Florida Cooperative Extension Services, Institute of Food and Agricultural Sciences, University of Florida. Publication date: 05/05/04. Please visit the EDIS website at http://edis.ifas.ufl.edu. 2. H.E. Jowers is County Extension Director of Jackson County Extenison Office, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Fl 32611. R.K. Sprenkel is Professor of Entomology Univeristy of Florida, North Florida Research and Education Center Quincy, FL 32351. The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A. & M. University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Larry Arrington, Dean Introduction Management of insect pests of peanut in Florida occasionally requires the use of insecticides. This publication was prepared to provide the user with a summary of available insecticide options for the major insects pests which may be encountered. For more information on peanut insect pests, see ENY403, Insect Management in Peanuts (http://EDIS.IFAS.UFL.EDU/IG062) and ENY668, Identification and Monitoring of Insect Pests in Peanut (http://EDIS.IFAS.UFL.EDU/IN176). Treatment Thresholds If the average number of foliage pests or the peg-pod-root feeding pests in a field exceeds the thresholds given below, then one of the chemical treatments listed on the following tables is usually justified. Foliage Feeders (Fall armyworms, corn earworms, beet armyworms and loopers) Early Season: 3-4/foot of row (before the plants meet in the middle) Late Season: 5-6/foot of row (after plants have completely covered the middle) Peg-Pod Feeders (Lesser cornstalk borer, southern corn rootworm and wireworms) Before Pegging: 10% of the plants with larvae After Pegging: 15% of the plants with larvae Treatment for cutworms is usually justified if their feeding has resulted in 20% or more foliage loss. Restrictions Many of the pesticides listed on the following tables have additional restrictions on the maximum number of applications per season, the frequency of application or the maximum amount of the pesticide that may be applied on the crop per season. Before using any of the pesticides listed in the following tables, be sure to read and follow all instructions and precautions listed on the pesticide labels.
Summary of Peanut Insecticide Options for Florida 2 Table 1. Suggested insecticides for control of major foliage-feeding caterpillar pests of peanut. Refer to the label for special information and precautions. Insecticide Restricted Use Beet Armyworm Corn Earworm Cutworms Fall Armyworms Loopers Rednecked Peanutworm Velvetbean Caterpillar REI (Hrs) Days to Harvest t--Amount of Formulation per Acre --Asana XL (esfenvalerate) YES 5.8-9.6 oz1 2.9-5.8 oz 5.8-9.6 oz 9.6 oz1 -2.9-5.8 oz 2.9-5.8 oz 12 21 Bacillus thuringiensis NO ----See label -See label See label Danitol 204 EC (fenpropathrin) YES -10.6-16 oz -10.6-16 oz ---24 14 Karate 2.08 Z (cyhalothrin) YES 1.92 oz2 1.28-1.92 oz 0.96-1.6 oz 1.28-1.92 oz2 1.92 oz1 0.96-1.6 oz 0.96-1.6 oz 24 14 Lannate LV (methomyl) YES 1.25-3 pt 0.75-3 pt 1.8-3 pt 0.75-1.5 pt 1.5-3 pt2 -1.5-3 pt 48 21 Lorsban 15G (chlorpyrifos) NO --6.8-13.9 lb3 ----24 21 Orthene 75S (acephate) NO -1-1.33 lb -1-1.33 lb 1-1.33 lb -1-1.3 lb 24 14 Sevin 4F4 (carbaryl) NO -1-1.5 qt 2 qt 1-1.5 qt -1 qt 1 qt 12 14 Tracer (spinosad) NO 2-3 oz 1.5-3 oz -2-3 oz -1.5-3 oz 1.5-3 oz 4 3 1Suppression only. 2For small larvae. 3Apply at plant in 6-12 inch band over the row for preventative treatment; late preventative treatment may be applied at early flowering to pegging in 6-8 inch band over the row. Do not apply more than 13.3 lbs. formulation/acre/application or 26.6 lbs. per season. Refer to the label for ounces/1000 ft of row based on row spacing and band-width. 4Application to wet foliage during periods of high humidity may cause injury to tender foliage. 5Adults only. 6Maximum of 1 application/year. At temperatures greater than 90oF with high humidity, some leaf phytotoxicity may occur. 7May also be used as a dry powder "planter box" treatment at a rate of 4 oz/100 lb of seed. See label directions for mixing procedure to insure adequate seed coverage.
Summary of Peanut Insecticide Options for Florida 3 Table 2. Suggested insecticides for miscellaneous foliage pests of peanut. Refer to the label for special information and precautions. (Footnotes may be found at the end of Table 1.) Insecticide Restricted Use Grasshoppers Thrips Potato Leafhopper Threecornered Alfalfa Hopper Twospotted Spider Mite Whiteflies Whitefringed Beetle REI Days to Harvest t---Amount of Formulation per Acre--(Hrs) Asana XL (esfenvalerate) YES 5.8-9.6 oz -2.9-5.8 oz ----12 21 Comite II 6.5EC (propargite)6 YES ----2.25 pt --7 days 14 Danitol 2.4 EC (fenpropathrin) YES --6-10.67 oz -10.67-16 oz 10.67-16 oz -24 14 Di-Syston 15G (disulfoton) YES -6.7 lb 6.7 lb 6.7 lb ---48 Karate 2.08 Z (cyhalothrin) YES 1.28-1.92 oz 1.281.92 oz 0.96-1.6 oz 1.28-1.92 oz 1.92 oz1 -0.96-1.6 oz5 24 14 Lannate LV (methomyl) YES -1.5-3 pt 1.75-3 pt 1.5-3 pt ---48 21 Nemacur 15G (fenamiphos) NO -10-17 lb -----24 21 Orthene 75S (acephate) NO 0.33-0.67 lb 0.5-1 lb7 1-1.33 lb 0.5-1 lb -11 oz -24 14 Sevin 4F (carbaryl)4 NO -1qt 1 qt 1 qt --2 qt5 12 14 Temik 15G (aldicarb) YES -7-14 lb -7-14 lb ---48 90 Thimet 20G (phorate)1 YES -5 lb 5 lb 5 lb ---48 90
Summary of Peanut Insecticide Options for Florida 4 Table 3. Suggested insecticides for miscellaneous peg and pod feeding pests of peanut. Refer to the label for special information and precautions. (Footnotes may be found at the end of Table 1.) Insecticide Restricted Use? Lesser Cornstalk Borer Southern Corn Rootworm Wireworms REI (Hrs) Days to Harvest ---Amount of Formulation per Acre--Asana XL (esfenvalerate) YES 5.8-9.6 oz1 --12 21 Karate 2.08 Z (cyhalothrin) YES 1.92 oz1 1.28-1.92 oz5 -24 14 Lorsban 15G (chlorpyrifos) NO 6.8-13.9 lb 6.8-13.9 lb 6.8-13.9 lb 24 21 Mocap 10G (ethoprop) 30 lb 25 lb -48 na Sevin 4 F (carbaryl) NO -1.0 qt -12 14 Thimet 20G (phorate) NO -10 lb 10 lb 48 90