Greenhouse Update - April 24, 2006
Leanne Pundt, Extension Educator, University of Connecticut
OOPS! The pictures on
this message were accidentally switched at the time of its original
posting on the website.
The corrections were made on April 27, 2006. Sorry for the error.
|Aphids on vegetable bedding plants, including peppers, eggplant and cole crops often occur. Look on the underside of the leaves and along the main stem for the aphids. Shed white skins, shiny honeydew, and the presence of ants are other indicators of aphid activity. (See photo).|
Foxglove aphids may cause more leaf distortion than other types of aphids on peppers as well as ornamental crops. Closely monitor your crops before extensive cosmetic damage occurs. (See photo).
Many of the pesticides labeled for ornamental crops are not labeled for edible crops. Insect growth regulators containing azadirachtin (Aza-Direct, Azatin, Ornazin, or Neemix) may be used. Contact insecticides such as Botanigard, Ultra-Fine oil, insecticidal soap, are also labeled. Repeat applications are often needed. Carefully read labels for safety precautions and use instructions. If the vegetable bedding plants are intended for resale, Marathon II is also labeled for foliar applications only.
If you are growing your vegetable transplants in more open greenhouses with rollup sides, parasitic wasps may enter your greenhouse to help manage the aphids.
Here you see aphid mummies on a pepper transplant. Very small parasitic wasps (not harmful to humans) lay their eggs inside the aphid. The aphid is killed as the developing larvae first feed upon it and then spin their cocoons. The brown, swollen exoskeleton of the aphid remains.
|In this case, natural enemies that the
grower did not have to pay for killed the aphids! No
additional sprays were needed. If you see evidence of
natural enemies, try to delay treatments or only use
pesticides that are more compatible with them. For more
information on pesticide compatibility, see either
www.koppert.nl and click upon side effects. See
Also, avoid using yellow sticky cards
near plants with these beneficial wasps, as the parasitic
wasps will be trapped and killed on the cards. Different
species of parasitic wasps are commercially available too.
Thrips and mites continue to occur. See previous updates for more information.
If you would like to receive an email notice when new greenhouse updates are posted on the website, please email me at: email@example.com . This will be an undisclosed list, and your email address will remain private.
Previous 2006 UConn IPM Greenhouse Updates
|April 15, 2006|
|April 10, 2006|
|April 3, 2006|
|March 27, 2006|
|March 20, 2006|
|March 3, 2006|
|February 25, 2006|
|February 17, 2006|
|January 31, 2006|
|New England Greenhouse Update now online. University Extension Specialists in New England, in conjunction with USDA's Northeast Sustainable Agriculture Research and Education, contribute information to this new website. Timely updates are provided for commercial growers of greenhouse crops and flowers in Massachusetts, Connecticut and Rhode Island. You can use this additional resource for more information about current observations and recommendations on environmentally safe production practices.|
GREENHOUSE IPM COORDINATOR
(commercial interests and growers)
phone toll free
Information on our site was developed for conditions in the Northeast. Use in other geographical areas may be inappropriate.The information in this material is for educational purposes. The recommendations contained are based on the best available knowledge at the time of printing. Any reference to commercial products, trade or brand names is for information only, and no endorsement or approval is intended. The Cooperative Extension system does not guarantee or warrant the standard of any product referenced or imply approval of the product to the exclusion of others which also may be available.All agrochemicals/pesticides listed are registered for suggested uses in accordance with federal and Connecticut state laws and regulations as of the date of printing. If the information does not agree with current labeling, follow the label instructions. The label is the law.Warning! Agrochemicals/pesticides are dangerous. Read and follow all instructions and safety precautions on labels. Carefully handle and store agrochemicals/pesticides in originally labeled containers immediately in a safe manner and place. Contact the Connecticut Department of Environmental Protection for current regulations.The user of this information assumes all risks for personal injury or property damage.Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Kirklyn M. Kerr, Director, Cooperative Extension System, The University of Connecticut, Storrs. The Connecticut Cooperative Extension System offers its programs to persons regardless of race, color, national origin, sex, age or disability and is an equal opportunity employer.