|  |
Insect Management in Blackberries1
Russell F. Mizell, III2Several kinds of insects have been found on blackberries. If production expands, insect problems are likely to become more numerous and extensive.
Thrips are tiny insects that infest blooms and berries. Injury to fruit has been attributed to their feeding and their presence is objectionable on harvested berries. Spider mites sometimes become numerous on leaves, especially during dry weather. Caterpillars and beetles that feed on foliage have been occasional problems. Stinkbugs, plant bugs, and sap beetles may become a problem on berries.
It appears that a regular spray program may be desirable in some areas. The application of malathion at weekly intervals beginning just as the plants flush out in the spring and continued through harvest is a possibility. Apply malathion at the rate recommended for thrips. Use only the emulsifiable concentrate near harvest to avoid visible residues on harvested berries by wettable powder. See Table 1 .
Tables
Table 1. Control of Specific Pests on Blackberries.
Insecticide
Formulation
Rate/Acre
Days to Harvest
APHIDS
carbaryl (European raspberry aphid) 80 S 1 1/4-2 1/2 lb 7
malathion 5 EC 3 pt 1 pyrenone CS 2 - 12 oz 0 pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 rotenone (Rotacide) EC 1 gal 0 soap, insecticidal (M-Pede) See label for specific directions FLEA BEETLES
methoxychlor
2 EC 2 - 3 qt 14 pyrenone CS 2 - 12 oz 0 rotenone (Rotacide) EC 1 gal 0 LEAF SKELETONIZERS
methoxychlor
2 EC 75 - 100 fl oz 14 spintor 2 SC 4-6 fl oz 3 LEAFHOPPERS
carbaryl
80 S
1 1/4-2 1/2 lb
7
malathion 5 EC 3 pt 1 pyrenone CS 2 - 12 oz 0 pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 rotenone (Rotacide) EC 1 gal 0 soap, insecticidal (M-Pede) See label for specific directions
LEAFMINERS
rotenone (Rotacide)
EC
1 gal
0
LEAFROLLERS
carbaryl
80 S
1 1/4-2 1/2 lb
7
pyrenone CS 2 - 12 oz 0 spintor 2 SC 4-6 fl oz 3 MITES
diazinon (AG 500) (dry berry mites)
4 EC 1 - 2 qts 7 dicofol (Keltane) 35 WP 1.75-3.5 lbs 2 malathion 5 EC 3 pt 1 pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 OBSCURE ROOT WEEVILS
malathion
5 EC
3 pt
1
OMNIVOROUS LEAFROLLERS
Bacillus thuringiensis WP 1/2- 1 lb 0 carbaryl (Sevin) 80 S 2 1/2 lbs 7 pyrenone CS 2 - 12 oz 0 spintor 2 SC 4-6 fl oz 3 OMNIVOROUS LEAFTIERS
methoxychlor 2 EC 2 - 3 qt 14 spintor 2 SC 4-6 fl oz 3 RASPBERRY CROWN BORERS
carbaryl
80 S
3 pt
1
RASPBERRY FRUITWORMS
pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 spintor 2 SC 4-6 fl oz 3 RASPBERRY SAWFLIES
carbaryl (Sevin) 80 S 2 1/2 lbs 7 RED SPIDER MITES
soap, insecticidal (Safer) See label for specific directions
ROSE CHAFERS
carbaryl 80 S 1 1/4-2 1/2 lb 7 malathion (rose scale chafer) 5 EC 3 pt 1 methoxychlor 2 EC 2 - 3 qt 14 ROSE SCALES
pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 SPITTLEBUGS
methoxychlor 4 EC 1 - 1 1/2 qt 14 THRIPS
malathion 5 EC
3 pt 1 pyrenone CS 2 - 12 oz 0 pyrethrins + rotenone (Pyrellin) EC 1-2 pts 0 rotenone (Rotacide) EC 1 gal 0 spintor 2 SC 4-6 fl oz 3
Footnotes
1. This document is ENY-410 (IG069), one of a series of the Department of Entomology and Nematology, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Date first printed: October 1993. Revised: May 2006. Reviewed: October 2007. Please visit the EDIS Website at http://edis.ifas.ufl.edu.2. Russell F. Mizell, III, professor, Entomology and Nematology Department, North Florida Research and Education Center, University of Florida, Quincy, FL 32351
The use of trade names in this publication is solely for the purpose of providing specific information. UF/IFAS does not guarantee or warranty the products named, and references to them in this publication does not signify our approval to the exclusion of other products of suitable composition. Use pesticides safely. Read and follow directions on the manufacturer's label.
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. For more information on obtaining other extension publications, contact your county Cooperative Extension service.
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.
Copyright Information
This document is copyrighted by the University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) for the people of the State of Florida. UF/IFAS retains all rights under all conventions, but permits free reproduction by all agents and offices of the Cooperative Extension Service and the people of the State of Florida. Permission is granted to others to use these materials in part or in full for educational purposes, provided that full credit is given to the UF/IFAS, citing the publication, its source, and date of publication.