How To Maintain Insect-Free Cole Crops

Insect-Free Cole Crops

Managing insect pests in cole crops presents unique challenges because of the variety of pests involved and the diversity of the crops themselves. Complicating things further, various pests show their presence at different times during the growing season (see “Insect Pests Of Cole Crops” chart). Overall, a key to effective pest management is regular scouting of the crop to determine pest presence and abundance.

At least five different areas of the field should be chosen, and 10 to 20 plants inspected for pests and/or damage. In addition, yellow sticky traps placed in and around cole crop fields early in the growing season can alert growers to the presence of cabbage maggot flies and flea beetles.

Traps should be changed at least weekly. Another valuable scouting tool is pheromone trapping. Pheromones are scents produced by female moths that attract males for mating. Synthetically produced pheromones can be purchased and used in traps to assess the presence and abundance of diamondback moths and cabbage looper. Yellow sticky traps and pheromone traps and lures may be purchased through several sources, including Great Lakes IPM, Gemplers, and others.

Stay On A Schedule

Regular scouting helps growers determine when pests are at threshold. The treatment threshold is the pest population level at which control measures must be initiated to prevent economic damage. Treatment threshold usually varies with crop type and growth stage. Thresholds have not been determined for every pest. For example, there are no treatment thresholds for flea beetles or onion thrips. In these cases growers can use their judgment when evaluating crops.

An integrated approach to insect pest control makes use of all effective control strategies in a complementary way (see “Take Control Of The Pests In Your Cole Crops” chart). Cultural control methods (crop rotation, resistant varieties, trap cropping, etc.) can reduce pest numbers and reduce or eliminate the need for insecticide application. When necessary, insecticides should be chosen carefully, so as not to impact biological control agents.

 

Leave a Reply

2 comments on “How To Maintain Insect-Free Cole Crops

Featured Stories
CitrusFederal Judge Blocks Clean Water Rule
August 28, 2015
  According to RISE (Responsible Industry For A Sound Environment), a federal judge in North Dakota has blocked implementation of Read More
PotatoesUSDA Deregulates Late Blight-Resistant Genetically Engineered Potato
August 28, 2015
Agency cites no significant impact of special spud developed by J.R. Simplot. Read More
Food SafetyLawmakers Urge FDA To Help Small Farms With FSMA Compliance
August 28, 2015
Letter from members of Congress asks FDA to expedite assistance and training for small producers. Read More
FruitsSustainable Options For Brown Marmorated Stink Bug Control
August 28, 2015
The brown marmorated stink bug (BMSB), unfortunately, is here to stay. Found in the U.S. in the late 1990s, this Read More
FruitsA Breakthrough In Biotechnology And The Future Of The Fruit Industry
August 28, 2015
Researchers from California and Sweden have recently been honored for a discovery that could have big implications for the fruit Read More
FruitsWhat Makes A Flavorful Fruit?
August 28, 2015
These days, U.S. consumers are increasingly demanding good-tasting fruit and the industry is responding. However, there remains room for improvement Read More
FruitsMedfly Find Prompts Quarantine In Portion Of San Diego County
August 28, 2015
A portion of San Diego County has been placed under quarantine for the Mediterranean fruit fly (medfly) following the detection Read More
Golden Rice
CitrusAnti-GMO-Fueled Threats Force Reallocation Of Biotech Education Funds
August 27, 2015
University of Florida officials say plans are to re-allocate a donation intended to improve the public’s understanding of science after Read More
ProductionNew Vegetable Grafting Technique Reduces Labor
August 27, 2015
Researchers patent a process to eliminate rootstock with the goal of making grafting more affordable in the U.S. Read More
money
CitrusMonsanto Drops Current Bid For Syngenta Acquisition
August 27, 2015
Even with a revised proposal that sweetened the pot to $46.2 billion, financial expectations still fall flat. Read More
The Latest
CitrusFederal Judge Blocks Clean Water Rule
August 28, 2015
  According to RISE (Responsible Industry For A Sound Environment), a federal judge in North Dakota has blocked implementation of Read More
PotatoesUSDA Deregulates Late Blight-Resistant Genetically Engi…
August 28, 2015
Agency cites no significant impact of special spud developed by J.R. Simplot. Read More
Food SafetyLawmakers Urge FDA To Help Small Farms With FSMA Compli…
August 28, 2015
Letter from members of Congress asks FDA to expedite assistance and training for small producers. Read More
FruitsSustainable Options For Brown Marmorated Stink Bug Cont…
August 28, 2015
The brown marmorated stink bug (BMSB), unfortunately, is here to stay. Found in the U.S. in the late 1990s, this Read More
FruitsA Breakthrough In Biotechnology And The Future Of The F…
August 28, 2015
Researchers from California and Sweden have recently been honored for a discovery that could have big implications for the fruit Read More
FruitsWhat Makes A Flavorful Fruit?
August 28, 2015
These days, U.S. consumers are increasingly demanding good-tasting fruit and the industry is responding. However, there remains room for improvement Read More
FruitsMedfly Find Prompts Quarantine In Portion Of San Diego …
August 28, 2015
A portion of San Diego County has been placed under quarantine for the Mediterranean fruit fly (medfly) following the detection Read More
Golden Rice
CitrusAnti-GMO-Fueled Threats Force Reallocation Of Biotech E…
August 27, 2015
University of Florida officials say plans are to re-allocate a donation intended to improve the public’s understanding of science after Read More
ProductionNew Vegetable Grafting Technique Reduces Labor
August 27, 2015
Researchers patent a process to eliminate rootstock with the goal of making grafting more affordable in the U.S. Read More
money
CitrusMonsanto Drops Current Bid For Syngenta Acquisition
August 27, 2015
Even with a revised proposal that sweetened the pot to $46.2 billion, financial expectations still fall flat. Read More
Jim McFerson
Apples & PearsNew Director At Washington Fruit Research Center Has Fa…
August 27, 2015
Jim McFerson, former manager at the Washington Tree Fruit Research Commission, takes over at the Washington State University Tree Fruit Research and Extension Center. Read More
Apples & PearsIt’s Been A Tough Year For Pacific Northwest Grow…
August 27, 2015
So far, 2015 is not treating the Pacific Northwest tree fruit industry all that well. We knew the record apple Read More
Insect & Disease UpdateCalifornia’s Citrus Growers Face More Challenges Than H…
August 27, 2015
As a kid growing up we all remember the arrival of Barnum & Bailey’s circus. The ads, the posters, the Read More
Leafy VegetablesThe Latest Vegetable Varieties For Covered Production
August 27, 2015
Check out cucumber, pepper and tomato offerings available from DeRuiter, Johnny’s Selected Seeds, Rijk Zwaan, and Syngenta. The greenhouse varieties are Read More
Leafy VegetablesIceberg Lettuce Prices Up In California’s Abnormal Weat…
August 26, 2015
Price may be up but the heat and humidity are diminishing quality. Read More
Postharvest HandlingTechnology Helping To Bring That “Fresh-Picked…
August 26, 2015
Imagine what it’s like to pick a fresh peach off of a tree in an orchard. The smell, the texture Read More
FruitsDo You Have #FarmFans? If Not, You Should
August 26, 2015
Your guests are already live tweeting their experiences of visiting your farm. Why not turn this into a social experience to promote your business? Read More
NutsAlmonds Contribute Little To Carbon Emissions
August 25, 2015
Compared to other nutrient-dense foods, the carbon footprint of almonds is small. Read More