Posts Tagged ‘Highmoor Farm’

Strawberry IPM Newsletter No. 2 – May 30, 2014

Friday, May 30th, 2014

StrawberriesStrawberry IPM Newsletter No. 2 – May 30, 2014

Click on photos to enlarge.

STRAWBERRY PESTS NOW ACTIVE DESPITE COOL, WET WEATHER

Clippers, Tarnished Plant Bugs, Spider Mites Found in Fields this Week

Strawberry Frost Injury

Frost Injury to Flowers and Leaves, Photo By David Handley

Vegetable and Berry Growers Twilight Meeting
Wednesday, June 11, 2014 at 5:30 p.m.
Fairwinds Farm, Bowdoinham, Maine

Situation: Continued cool wet weather has kept strawberry development at a relatively slow pace.  Fields in southern to mid-state Maine are coming into full bloom for early varieties, while late varieties are just starting to show a few primary blossoms.  The time from bloom to harvest is approximately three weeks, but may take a little longer under extended cool conditions.  Most fields we visited this week showed some moderate winter injury.  Weak plants, especially in areas where the mulch was thin, show browning within the crown tissue, indicative of freeze damage.

Twilight Meeting
The University of Maine Cooperative Extension and the Maine Vegetable and Small Fruit Growers Association will hold a twilight meeting at Fairwinds Farm in Bowdoinham on Wednesday, June 11 at 5:30 p.m.  Pete and Cathy Karonis grow 10 acres of strawberries and approximately 40 acres of mixed vegetables in fields along the Kennebec River and have a farm stand and greenhouses in Topsham.  They will host a tour of their strawberry, raspberry and vegetable plantings, and describe their growing and marketing practices.  In addition, we’ll discuss the upcoming season and pest management issues facing vegetable and berry growers this year.  One pesticide applicator recertification credit will be awarded for the meeting. Hold the date! We’ll give driving directions soon.

Strawberry bud weevil or “clipper” is now active in most of the fields we’ve scouted. Damage so far is very light, suggesting that the adults are feeding on pollen and mating, but they will very soon start laying eggs and clipping buds. If you haven’t yet been looking for clipped buds, now is the time. Insecticide options for clipper include Lorsban®, Brigade®, Bifenture®, Danitol®,  Sevin® and PyGanic®.

Clipper Injury

Clipper Injury, Photo by David Handley

Tarnished Plant Bug Nymph on Strawberry Blossom

Tarnished Plant Bug Nymph on Strawberry Blossom, photo by David Handley

Tarnished plant bug nymphs were found in most of the fields we scouted this week.  The nymphs can be hard to find, especially if the plants are wet. Young nymphs are very small (2 mm), active, yellow-green insects.  It is important to scout for them regularly, as they can appear very quickly. Only one field was over the threshold (4 or more flower clusters infested per 30 sampled). Start scouting any field with open flowers now.  Insecticide options for tarnished plant bug include malathion, Assail®, Brigade®, Bifenture®, Danitol®, and PyGanic®.

Two-spotted Spider Mites

Two-spotted Spider Mites, photo by David Handley

Two-spotted spider mites were over the threshold (25% of leaves infested) in one location this week.  This is surprising given how cold and wet it has been.  Mites typically proliferate under hot, dry conditions, and we often first find them in plantings under row covers.  But plantings that harbored a high mite population last fall are also likely to see a problem with mites in the spring.  Spider mites will reproduce rapidly under warmer temperatures, so it is important to scout for them regularly. Chemical control options for two-spotted spider mites include Acramite®, Savey®, Zeal®, Vendex®, Oberon®, Brigade®, Danitol®, Thionex® and JMS Stylet oil® (oils will cause plant injury if used in combination with captan or within 14 days of an application of sulfur).

Cyclamen mites:  One two-year old field showed symptoms of cyclamen mite injury this week.  Infested plants show weak growth and yellow, crinkled leaves. These mites are very small and reside in the crown of the strawberry plant, feeding on the developing leaves and flower buds. They are very hard to see, even with magnification. Portal®, Kelthane® or Thionex® can be effective, but must be applied in lots of water to be sure that the material is carried down into the crowns where these mites reside.

Root weevil management
Plants damaged by root weevils should become more obvious in the coming days as the fields dry out and the grubs become more active.  We have not found any additional fields infested since our reports of two fields last week. Infested plants appear weak and stunted, and may wilt during hot days. Digging under the plants will reveal small (1/4”-1/2”) crescent-shaped legless grubs. Typically, the grubs begin to pupate when the plants are in bloom.  Once the adults become active in July, bifenthrin (Brigade®) will provide some control if used at the highest labeled rates.

Diseases: As the fields come into bloom it is time to protect the flowers against infection by spores of the gray mold fungus, Botrytis cinerea. Two to three sprays of fungicide during bloom are typically required to provide good protection against this disease. Remember that fruit infections take place through the flowers, so gray mold control efforts must be focused on the bloom period.

Leather rot (Phytopthora cactorum) may become a problem in fields where standing water is common during bloom and fruit development, especially if the fields were not mulched last fall. Incidence of leather rot can be reduced by applying straw mulch between the rows to prevent berries from touching the soil and reducing soil splashing onto the berries.  Foliar sprays of Aliette®, Agri-Phos® or Phostrol® may be applied during bloom and fruit development to prevent leather rot when there has been excess moisture in a field, especially those with a history of this problem.

Anthracnose fruit rot is a potential problem when fruit ripens in fields that are wet from irrigation or rain.  This fungus disease is favored by warm, humid conditions and can spread rapidly during rains or when fields are irrigated with overhead sprinklers.  In cool seasons, it may appear close to harvest or may not show up at all.  Anthracnose fruit rot is identified by black sunken lesions with wet, orange (and sometimes gray) spore masses in them.  The fungus can survive and multiply on leaves without visible symptoms, appearing suddenly as a fruit rot when the conditions are right.   Fungicides such as Cabrio® and Abound® can provide good control of anthracnose.

Powdery mildew:  We have not yet seen symptoms of this fungus disease in fields.  It tends to be more prevalent under warm, humid conditions. It may first appear as purple or red blotches on the leaf and flower stems. Later, upward curling leaves and white, powdery growth on the undersides of the leaves becomes evident. Check your fields for pinkish purple leaf and flower stem lesions as new leaves emerge. Pristine®, Cabrio®, Topsin-M®, captan, Procure®, Torino® and JMS Stylet oil® are registered to control powdery mildew.

Angular Leaf Spot

Bacterial Angular Leaf Spot, Photo by David Handley

Angular leaf spot was found in one field this week.  This is a bacterial disease characterized by small water-soaked spots on the leaves, which may turn yellow or black. The symptoms start on the lower leaves but spread throughout the foliage when spores are splashed up by rain or irrigation water. Infections can cause blackening of the berry stems and caps. This disease is favored by extended cool, wet weather with night temperatures close to freezing. Irrigating fields for frost protection encourages development and spread of the disease. Hydrogen dioxide (OxiDate®) may also have some activity against angular leaf spot when used on strawberries as part of a gray mold management program.

Sincerely,

David T. Handley
Vegetable & Small Fruit Specialist

Highmoor Farm                       Pest Management
P.O. Box 179                             491 College Ave
Monmouth, ME  04259         Orono, ME  04473
207.933.2100                           1.800.287.0279

Maine Cooperative Extension, the Land Grant University of the state of Maine and the U.S. Department of Agriculture Cooperating.  Cooperative Extension and other agencies of the U.S.D.A. provide equal opportunities in programs and employment.  A Member of the University of Maine System.

Where brand names or company names are used it is for the reader’s information. No endorsement is implied nor is any discrimination intended against other products with similar ingredients Always consult product labels for rates, application instructions and safety precautions. Users of these products assume all associated risks.

Highbush Blueberry, Asparagus and Strawberry Plant Sale

Monday, May 5th, 2014

The University of Maine Cooperative Extension and its Master Gardener Volunteers are offering a “Grow it Right!” plant sale to raise funds for its Master Gardener Volunteers program.

Blueberry Plants: pack of 3 young plants, two varieties per pack (Blueray, Patriot, Northland or Jersey) $35.95 per pack.

Asparagus Crowns: 10 crowns (Jersey Supreme) $15.00 per pack.

Strawberry Plants: pack of 25 young dormant plants (Brunswick, Sparkle, or Wendy) $15.00 per pack.

Plants will be available for pickup at the locations listed below on Saturday, May 17, 2014.

  •  Cumberland County at the Barron Center in Portland
  •  Hancock County in Ellsworth
  •  Highmoor Farm in Monmouth
  •  Knox-Lincoln Counties in Waldoboro
  •  Oxford County in South Paris
  •  Penobscot County in Bangor
  •  Piscataquis County in Dover-Foxcroft
  •  Somerset County in Skowhegan
  •  Washington County in Machias
  •  York County in Springvale

Order online at:  http://umaine.edu/gardening/master-gardeners/benefit/.

To request special accommodations or for more information contact Richard Brzozowski, 207.781.6099, toll-free in Maine at 800.287.1471 or email richard.brzozowski@maine.edu; or Marjorie Peronto, 207.667.8212 or toll-free in Maine at 800.287.1479 or email marjorie.peronto@maine.edu.

Deadline to order May 1, 2014.

Fruit Tree Class at Highmoor Farm – April 12, 2014

Monday, February 10th, 2014

THIS CLASS IS FILLED.

What:
This class on growing fruit trees in Maine will focus on pruning, and dealing with diseases and insect pests. The workshop is free of charge, but please preregister by calling Renae Moran at 207.933.2100 or email rmoran@maine.edu.

Who:
This class is for those from the general public who would like to learn more about the cultural requirements of fruit trees, in particular pruning, insect pests and diseases. The class will be taught by Renae Moran, Tree Fruit Specialist for the University of Maine.

When: Saturday, April 12, 2014 from 10:00 AM to 12:00 PM
Please dress for an outdoor class. If the day turns out to be rainy, the class will be held indoors.

Apple tree at Highmoor Farm; photo by Edwin Remsberg

Where:
Highmoor Farm, UMaine Agricultural Experiment Station
52 US Route
202, Monmouth, Maine 04259
Tel. 207.933.2100

The class will begin in the meeting room behind the barn. If weather permits, we will have a pruning demonstration in the orchard and a tour of our fruit tree research orchards.

Directions

Traveling North on I-95:  Take Exit 75 off the Maine Turnpike in Auburn (left turn off the exit ramp).  Go through Lewiston and travel east 17.9 miles on Route 202.  Highmoor Farm is on your right.

Traveling South on I-95:  Take Exit 109B off I-95 in Augusta and travel west on Route 202 for 15.7 miles.  Highmoor Farm is on your left.

For more information, contact Renae Moran at 207.933.2100 or email rmoran@maine.edu.

If you are a person with a disability and will need any accommodations to participate in this class, please call Pam St. Peter at 207.933.2100 to discuss your needs, TDD 1-800-287-8957 (in Maine).   Please contact us at least one week prior to this event to assure fullest possible attention to your needs.

Pruning Fruit Trees Class – April 5, 2014

Friday, January 17th, 2014

Pruning Fruit Trees Class

pruning a fruit tree

Saturday, April 5, 2014
10:00 AM to 12:00 PM
Highmoor Farm, UMaine Agricultural Experiment Station
52 US Route 202, Monmouth, Maine 04259
Registration Fee:  $9.00
Preregistration is required through MSAD #11 Adult Education.
Course ID:  6200.01.0.314.51.106501

Register online or contact Diann Bailey at dbailey@msad11.org or 207.582.3774 to preregister.

The Pruning Fruit Trees class will cover basic pruning techniques for apple, pear, peach and cherry trees and will include a demonstration as well as an opportunity for hands-on learning. The class will be taught by Renae Moran, Tree Fruit Specialist for the University of Maine. It will be held outdoors at the University of Maine Highmoor Farm in Monmouth. Students should meet in the parking lot behind the barn.

Please contact Renae Moran for more information about the class at 207.933.2100 or rmoran@maine.edu.

Directions

Traveling North on I-95:  Take Exit 75 off the Maine Turnpike in Auburn (left turn off the exit ramp).  Go through Lewiston and travel east 17.9 miles on Route 202.  Highmoor Farm will be on your right.

Traveling South on I-95:  Take Exit 109B off I-95 in Augusta and travel west 15.7 miles on Route 202.  Highmoor Farm will be on your left.

Fruit Tree Class at Highmoor Farm – February 15, 2014

Thursday, January 16th, 2014

Please note:  This class is filled.

What:
This half-day workshop on the basics of growing fruit trees will focus on growing apples for commercial sale.  This class will cover pruning, fertilizers, fruit thinning, insect pests, diseases and spraying.  If weather permits, we will have a pruning demonstration in the orchard. The class is free of charge, but please preregister by contacting Renae Moran at 207.933.2100 X105 or rmoran@maine.edu.

AGENDA

10:00 AM Welcome and Introductions
10:10 AM What to Expect When Growing Apple and Other Tree Fruits
10:30 AM Fruit Thinning
11:00 AM Break
11:15 AM Nutrition and Fertilizing
11:45 AM Harvest Management with Stop Drops
12:00 PM Lunch
1:00 PM Insect Pests and Diseases
2:00 PM Spraying
2:30 PM Pruning

Who:
This class is for people who would like to learn more about the cultural requirements of fruit trees, in particular pruning, insect pests and diseases.  The class will be taught by Renae Moran, Tree Fruit Specialist for the University of Maine.

When: Saturday, February 15, 2014 from 10:00 AM to 2:00 PM
There will be a one-hour break at noon, so bring a lunch.  Snacks and drinks will be provided.

Highmoor Farm Sign

Where:
Highmoor Farm, UMaine Agricultural Experiment Station
52 US Route
202, Monmouth, Maine 04259
Tel. 207.933.2100

The class will begin in the meeting room behind the barn.

Directions

Traveling North on I-95:  Take Exit 75 off the Maine Turnpike in Auburn (left turn off the exit ramp).  Go through Lewiston and travel east 17.9 miles on Route 202.  Highmoor Farm will be on your right.

Traveling South on I-95:  Take Exit 109B off I-95 in Augusta and travel west 15.7 miles on Route 202.  Highmoor Farm will be on your left.

For more information, contact Renae Moran at 207.933.2100 or email rmoran@maine.edu.

If you are a person with a disability and will need any accommodations to participate in this class, please call Pam St. Peter at 207.933.2100 to discuss your needs, TDD 1-800-287-8957 (in Maine).   Please contact us at least one week prior to this event to assure fullest possible attention to your needs.

 

Maine Vegetable and Fruit School 2014

Wednesday, January 15th, 2014

University of Maine Cooperative Extension Highmoor FarmThe day-long school is offered on two dates at two locations: March 10 in Portland or March 11 in Bangor.  Preregistration is required.  Registration cost is $35 and includes lunch. Please register by February 21, 2014.

Print a registration form (PDF)

Maine Vegetable and Fruit School is hosted by

  • University of Maine Cooperative Extension
  • Maine Vegetable & Small Fruit Growers Association

Monday, March 10, 2014
SEASONS CONFERENCE CENTER

155 Riverside Street, Portland, Maine 04103
Tel. 207.775.6336

Tuesday, March 11, 2014
BANGOR MOTOR INN CONFERENCE CENTER

701 Hogan Road, Bangor, Maine 04401
Tel. 207.947.0355 or 1.800.244.0355

 

AGENDA – March 10 and March 11, 2014

8:30 AM REGISTRATION
9:00 AM Legislative Update: Pesticide Application, Certification and More…
      — Maine Board of Pesticides Control
9:30 AM Think Before You Spread – Fertilizer Applications for Long Term Impacts
      — Dr. Eric Sideman and Mark Hutchinson
10:00 AM Soil Fertility Planning at Laughingstock Farm
      — Lisa Turner
10:30 AM BREAK
10:45 AM Compost for High Tunnel Tomatoes
      — Kate Marshall
11:30 AM Soil Conditioning with Wood Chips
      — Dr. Suzanne Morse
12:00 PM LUNCH
1:00 PM Food Safety Modernization Act: Potential Impacts on Your Farm
     — Heather Bryant
1:30 PM Farm Food Safety Discussion: Do I Really Have To?
      — Dr. Jason Bolton, Linda Titus and Heather Bryant
2:00 PM BREAK
2:15 PM What’s New and What’s Best for Potatoes?
      — Dr. John Jemison
2:45 PM A Pumpkin Disease Spray Program – Putting the Pieces Together
      — Dr. Mark Hutton
3:15 PM Innovative Strawberry Growing Practices
      — Dr. David Handley
3:45 PM WRAP-UP & EVALUATION

Speakers

Jason Bolton – Food Safety Specialist, University of Maine Cooperative Extension
Heather Bryant – Field Specialist, University of New Hampshire Cooperative Extension
Dr. David Handley – Vegetable and Small Fruit Specialist, UMaine Cooperative Extension
Mark Hutchinson – Extension Professor, University of Maine Cooperative Extension
Dr. Mark Hutton – Vegetable Specialist, University of Maine Cooperative Extension
Dr. John Jemison – Water Quality and Soil Specialist, UMaine Cooperative Extension
Kate Marshall – Graduate Student, University of Maine
Dr. Suzanne Morse – Professor of Applied Botany, College of the Atlantic, Bar Harbor, Maine
Dr. Eric Sideman – Organic Crop Specialist, Maine Organic Farmers and Gardeners Association
Linda Titus – Coordinator, GAP/GHP Advisory Program, AgMatters
Ralph Turner – Laughingstock Farm, Durham, Maine

Thank you to Northeast Agricultural Sales, Inc. for sponsoring our morning break.


Participants may receive 2.0 Pesticide Applicator recertification credits for attending.  Certified Crop Advisors may earn 5.0 recertification credits for participation.


For more information about this or other workshops, please contact:

Mark Hutchinson, Extension Educator
University of Maine Cooperative Extension
Knox – Lincoln Counties
377 Manktown Road
Waldoboro, ME 04572-5815
Tel. 207.832.0343 or 1.800.244.2104 (in Maine).
mhutch@maine.edu  


Any person with a disability who needs accommodations to participate in this program should contact Mark Hutchinson at 1.800.244.2104, or 1.800.287.8957 (TDD) to discuss any needed arrangements at least seven days in advance.

 

 

Pesticide Applicator Training – November 14, 2013

Monday, September 30th, 2013

Pesticide Applicator License Exam Training

Thursday, November 14, 2013
8:00 AM to 3:30 PM
Highmoor Farm, 52 US Route 202, Monmouth, Maine 04259
Registration fee is $10.00. Lunch cost is additional $15.00 (optional).  PREREGISTRATION IS REQUIRED.

Contact Pam St. Peter at pamela.stpeter@maine.edu or 207.933.2100 to preregister.

Cost for registration is $10.00 per person for the training session, plus an optional $15.00 if you would like to sign up for the catered lunch. Checks are to be made payable to University of Maine Cooperative Extension.

The Core pesticide training and exam will be offered in the morning, followed by lunch. There will be Orchard Fruit Commodity AND Vegetable Commodity trainings and exams offered concurrently in the afternoon.

Please go to the Pesticide Safety Education Program webpage for information on acquiring study materials, or call Meghan Dill at 207.581.3878. The Core Manual cost is $15.00, which also includes a pesticide application logbook. The Orchard Fruit Private Manual costs $8.00 and a digital version of this manual is available for free. The Vegetable Private Manual cost is $8.00.

Attending a training session or purchase of manuals is not required to take an applicator license exam. The training and manuals provide useful information at subsidized cost to enhance safety and minimize risk.

Do You Need a Pesticide Applicator License?
An Agricultural Basic pesticide applicator license is required for fruit, vegetable and grain growers who use only general use (over-the-counter) pesticides and annually sell more than $1,000 of plants or plant products intended for human consumption. To obtain an Agricultural Basic pesticide applicator license, the candidate must pass a written, closed book examination. The test is called the Core Exam and covers general pesticide information.

A Private pesticide applicator license is necessary for anyone who wishes to purchase, apply or supervise application of general use or restricted or limited use pesticides with the intent of producing a commodity. These pesticides may be used only on property owned, leased or rented by the licensee or licensee’s employer. Typical Private license holders include farmers, greenhouse operators, florists, orchardists, Christmas tree growers and foresters. To obtain a Private license, the candidate must pass the Core Exam, and a second Commodity Exam that measures knowledge of pest management practices for a given crop or crop family.

How Do You Get a License?
Once the required exam(s) are passed, the candidate is certified for three years and is eligible for a license. Licenses are obtained by submitting an application and $15.00 to the Maine Board of Pesticides Control.

AGENDA

8:00 AM Core Pesticide Safety Training, Part I
9:30 AM Break
9:45 AM Core Training, Part II

11:15 AM Core Exam
A passing grade on the Core Exam makes a person eligible for an Agricultural Basic pesticide applicator license.
12:30 PM Lunch – catered or bring your own
1:15 PM Orchard Fruit Commodity Training and Vegetable Commodity Training
Held concurrently
2:15 PM Break
2:30 PM Orchard Fruit Commodity Exam and Vegetable Commodity Exam
Held concurrently
A passing grade on the Core Exam AND Commodity Exam makes a person eligible for a Private pesticide applicator license.


Directions to Highmoor Farm, 52 US Route 202, Monmouth, Maine 04259 (207.933.2100)

Traveling North on I-95:  Drive north on the Maine Turnpike (I-95) and take Exit 86 in Sabattus. Turn left onto Route 9/Middle Road. Travel about 2 miles on Route 9 East, then turn left onto Route 132. After 4.5 miles, turn left onto Leeds Junction Road. Travel about 2.8 miles, then turn right onto U.S. Route 202 and travel about 1.3 miles up the road until you see Highmoor Farm on the right.

Traveling South on I-95:  Take Exit 109B in Augusta. Continue west on U.S. Route 202 and travel about 15 miles. Highmoor Farm will be on the left.

If you are a person with a disability and will need any accommodations to participate in this program, please call Pam St. Peter at the Highmoor Farm at 207.933.2100 or TDD 1.800.287.8957 to discuss your needs at least 7 days prior to this event.

Highmoor Farm Fall Harvest Sale – October 10, 2013

Monday, September 16th, 2013

2013 Highmoor Fall Harvest Sale at UMaine

Staff from UMaine’s Highmoor Farm in Monmouth will be on the Orono campus again this fall to sell high quality apples and pumpkins.  We hope to see you there!

Highmoor Fall Harvest Sale
Thursday, October 10, 2013 –
weather permitting
10:00 AM to 4:00 PM
Located by the Cyrus Pavilion Theatre, between Winslow Hall and Fogler Library

Apples

The following apple varieties will be on sale:
Cortland                            Empire
Gala                                    Golden Delicious
Macoun                             McIntosh
Snow Sweet

Apple prices:  $1.00/lb

$2.00/lb for HoneyCrisp and organically grown HoneyCrisp

Variety of pumpkins

There will be several varieties of pumpkins on sale.

Pumpkin prices:

$3:00/small
$5.00/medium
$8.00/large

 

For more information, please contact Greg Koller, Highmoor Farm Superintendent, at 933.2100 or gkoller@maine.edu.

Sweet Corn IPM Newsletter No. 11 – September 6, 2013

Friday, September 6th, 2013

Sweet Corn

Sweet Corn IPM Newsletter No. 11 – September 6, 2013

For full page print version, please see link at the bottom. Click on photos to enlarge.

Last Regular Issue for 2013

LATE SILKING CORN STILL NEEDS PROTECTION

Higher Earworm Counts in Southern and Coastal Locations

This will be the final issue of the Sweet Corn IPM Newsletter for the 2013 season. I would like to thank all of the growers who participated in the program this year, and our team of IPM scouts including Kara Rowley, Hayden Koller, Tammy Cushman, Griffin Dill and Sean McAuley, with help from John Hutton. Thanks to Pam St. Peter for getting us to print and keeping up the web page.  Input from our readers is welcome. Please call or e-mail us with your questions, comments and suggestions.

SITUATION
The storm last week appears to have brought some corn earworm moths into the state, as well as several inches of rain. Post Labor Day corn has matured quickly, but the market seems to be holding well, even with a plentiful supply. Insect pressure is relatively low for this late in the summer, especially in more northern and inland sites; although any weather coming up from the tropics over the next few weeks could change that status very quickly.

European corn borer:  Moth catches were fairly low and sporadic this week. A weak second generation appears to be showing up in a few locations, but most sites are well under threshold. Fields in Dayton, North Berwick, Wayne and Wells exceeded the threshold of 5 moths per week in silking corn, but only the Wayne field is not presently under a spray interval for corn earworm.

Corn earworm:  Moth counts were higher in some southern and coastal locations this week, suggesting that the recent storm may have brought in some moths. A 4-day spray interval for fresh silking corn was recommended at one site in Cape Elizabeth. A 5-day spray interval was recommended in Monmouth and the other Cape Elizabeth site. A 6-day spray interval was recommended for silking fields in Biddeford, a Dayton site, New Gloucester, North Berwick, Poland Spring, Sabattus, Warren and one Wells site. Remember that any storm fronts moving up from the south can bring lots of corn earworm with them and change the situation rapidly for any silking corn remaining.

Corn Earworm Larvae

Corn Earworm Larvae, photo by David Handley

Fall Armyworm Injury on Corn Leaves

Fall Armyworm Injury on Corn Leaves, photo by David Handley

Fall armyworm:  Moth counts were higher in some sites this week, but most remain under threshold for silking corn. Fall armyworm exceeded the threshold of three moths for silking corn in Cape Elizabeth, Dayton, Monmouth, New Gloucester, Nobleboro, Oxford, Warren and Wells.

Remember to plow down your corn stalks.
Plowing down corn stalks destroys overwintering sites for European corn borer. Winter rye can be planted after plow down to prevent soil erosion and conserve nutrients.

Male and Female Spotted Wing Drosophila Flies

Male (left) and Female (right) Spotted Wing Drosophila, photo by Griffin Dill. Actual size: 2-3 mm.

Spotted Wing Drosophila Alert:  Fruit fly counts are increasing significantly this week and we’re getting more reports of larvae in ripening fruit, including fall raspberries, blueberries, blackberries and grapes. All ripening fruit should be protected with regular and repeated treatments of an approved insecticide. In most fields a 4 to 5 day spray interval is needed to prevent infestation.  Visit our website for details:  http://umaine.edu/highmoor/spotted-wing-drosophila/.

The New England Vegetable & Fruit Conference will be held in Manchester, New Hampshire on December 17, 18, and 19, 2013. Program and registration information will be coming soon.  Visit the website: http://www.newenglandvfc.org/.

Sincerely,

David T. Handley
Vegetable & Small Fruit Specialist

Highmoor Farm                       Pest Management Office
P.O. Box 179                             491 College Avenue
Monmouth, ME  04259        Orono, ME  04473
207.933.2100                          1.800.287.0279

Sweet Corn IPM Weekly Scouting Summary

Location CEW
Moths
ECB
Moths
FAW
Moths
Recommendations / Comments
Auburn 0 0 0 No spray recommended
Biddeford 3 2 1 6-day spray interval recommended on all silking corn
Cape Elizabeth I 4 3 0 5-day spray interval recommended on all silking corn
Cape Elizabeth II 12 0 5 4-day spray interval recommended on all silking corn
Dayton I 1 3 3 One spray recommended for FAW on all silking corn
Dayton II 3 11 1 6-day spray interval recommended on all silking corn
Farmington 0 1 1 No spray recommended
Lewiston 0 3 0 No spray recommended
Monmouth 4 3 3 5-day spray interval recommended on all silking corn
New Gloucester 2 0 3 6-day spray interval recommended on all silking corn
Nobleboro 0 0 6 One spray recommended for FAW on all silking corn
No. Berwick 3 8 0 6-day spray interval recommended on all silking corn
Oxford 0 0 3 One spray recommended for FAW on all silking corn
Poland Spring 2 0 0 6-day spray interval recommended on all silking corn
Sabattus 2 1 1 6-day spray interval recommended on all silking corn
Wales 0 0 2 No spray recommended
Warren 3 2 9 6-day spray interval recommended on all silking corn
Wayne 0 6 0 One spray recommended for ECB on all silking corn
Wells I 0 0 0 No spray recommended
Wells II 2 5 5 6-day spray interval recommended on all silking corn

 

CEW: Corn earworm (Only fresh silking corn should be sprayed for this insect.)
ECB: European corn borer
FAW: Fall armyworm

Corn Earworm Spray Thresholds for Pheromone Traps

Moths caught per week Moths caught per night Spray interval
0.0 to 1.4 0.0 to 0.2 No spray
1.5 to 3.5 0.3 to 0.5 Spray every 6 days
3.6 to 7.0 0.6 to 1.0 Spray every 5 days
7.1 to 91 1.1 to 13.0 Spray every 4 days
More than 91 More than 13 Spray every 3 days

Thresholds apply only to corn with exposed fresh silk. Lengthen spray intervals by one day if maximum daily temperature is less than 80°F.

European Corn Borer Thresholds
Whorl stage:  30% or more of plants scouted show injury.
Pre-tassel-silk:  15% or more of plants scouted show injury.
Silk:  5 or more moths caught in pheromone traps in one week.

IPM Web Pages:
http://extension.umaine.edu/ipm/
http://www.pestwatch.psu.edu/sweet_corn.htm
http://www.umass.edu/umext/ipm/

Where brand names or company names are used it is for the reader’s information. No endorsement is implied nor is any discrimination intended against other products with similar ingredients. Always consult product labels for rates, application instructions and safety precautions. Users of these products assume all associated risks.

Published and distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914, by the University of Maine Cooperative Extension, the Land Grant University of the State of Maine and the U.S. Department of Agriculture cooperating.  Cooperative Extension and other agencies of the U.S.D.A. provide equal opportunities in programs and employment.

Sweet Corn IPM Newsletter No. 10 – August 30, 2013

Tuesday, September 3rd, 2013

Sweet CornSweet Corn IPM Newsletter No. 10 – August 30, 2013

For full page print version, please see link at the bottom. Click on photos to enlarge.

LOW CORN PEST PRESSURE FOR LATE SEASON CORN

Higher Fall Armyworm Moth Counts in some Southern and Coastal Locations

SITUATION
Late corn has been maturing quickly in much of the state, under good weather conditions. It looks as though there will be a good supply of high quality corn for the holiday weekend. Insect pests remain fairly quiet this week.  Vertebrate pest problems have been increasing. Many fields have been visited by hungry birds, skunks, raccoons and deer recently. Next week will be the last regular issue of the Sweet Corn IPM Newsletter for the 2013 season.

Corn Harvester

Corn Harvester, photo by David Handley

European Corn Borer Moth

European Corn Borer Moth, photo by David Handley

European corn borer:  Moth catches were up in some locations this week suggesting that a weak second generation of European corn borer may be getting started in southern Maine. These moths could threaten silking corn in fields that are not under a regular spray schedule for corn earworm. Fields in New Gloucester, Nobleboro, North Berwick and Sabattus exceeded the threshold of 5 moths per week in silking corn; but the North Berwick field is under a spray interval for corn earworm, so no additional sprays should be required. Nearly all fields are in silk, so we did not scout for feeding damage this week, but based our recommendations on pheromone trap catches.

Corn earworm:  Moth counts were lower in most locations this week. Most traps caught no moths and therefore no spray intervals were recommended this week for silking corn at those sites. A 5-day spray interval was recommended for fields in one of the Dayton sites and Charleston this week. A 6-day spray interval was recommended for silking fields in Auburn, a Dayton site and North Berwick. While the relatively light pressure has meant a relaxed spray schedule for many growers this season, remember that any storm fronts that move up the coast from the south in the coming days and weeks could bring lots of corn earworm with them and change the situation rapidly for any silking corn.

Fall armyworm:  Moth counts were higher in some southern and coastal sites, but most caught few or no moths this week. Fall armyworm exceeded the weekly threshold of three moths for silking corn in Biddeford, Cape Elizabeth, Dayton, Monmouth, Nobleboro, Warren and Wells.

Male Fall Armyworm Moth

Male Fall Armyworm Moth, photo by David Handley

Spotted Wing Drosophila on Raspberry

SWD on Raspberry, photo by David Handley.

Spotted Wing Drosophila Alert:  Fruit fly counts are increasing at many sites this week, and more sites are now catching flies. We have more grower reports of larvae in fruit, indicating that even low trap captures signal a significant threat. We recommend that all ripening fruit be protected with an approved insecticide. Regular and repeated treatments are needed to keep fruit from becoming infested. In some locations a 7-day spray interval has not been adequate to prevent infestation, so we have tightened the spray schedule to 4 to 5 days. Chilling fruit to as close to 32ºF immediately after harvest can significantly reduce the activity and emergence of any larvae. Visit our Spotted Wing Drosophila blog for more details.

Understanding and Managing Soils for Healthy Productive Crops: This series will offer farmers strategies to successfully manage soils for long-term productivity. It will take place on Tuesdays, 6:00 PM to 8:00 PM on October 1, 8, 15, 22 and 29, at the Knox and Lincoln Counties Cooperative Extension Office, 377 Manktown Road, Waldoboro, Maine. Cost is $40 per person for the series, or $10 per session. Contact Mark Hutchinson at 207.832.0343 or mhutch@maine.edu for more information, or visit the UMaine Cooperative Extension Agriculture Programs website.

Sincerely,

David T. Handley
Vegetable & Small Fruit Specialist

Highmoor Farm                       Pest Management Office
P.O. Box 179                             491 College Avenue
Monmouth, ME  04259        Orono, ME  04473
207.933.2100                          1.800.287.0279

 

Sweet Corn IPM Weekly Scouting Summary

 

Location CEW
Moths
ECB
Moths
FAW
Moths
Recommendations / Comments
Auburn 2 0 0 6-day spray interval recommended on all silking corn
Biddeford 0 0 10 One spray recommended for FAW on all silking corn
Cape Elizabeth I 1 0 10 One spray recommended for FAW on all silking corn
Cape Elizabeth II 1 3 7 One spray recommended for FAW on all silking corn
Charleston 4 1 1 5-day spray interval recommended on all silking corn
Dayton I 2 3 3 6-day spray interval recommended on all silking corn
Dayton II 4 2 0 5-day spray interval recommended on all silking corn
Farmington 0 4 0 No spray recommended
Garland 0 3 1 No spray recommended
Levant 0 2 0 No spray recommended
Lewiston 0 0 No spray recommended
Monmouth 1 1 3 One spray recommended for FAW on all silking corn
New Gloucester 1 7 One spray recommended for ECB on all silking corn
Nobleboro 0 6 4 One spray recommended for FAW+ECB on all silking corn
No. Berwick 3 6 6-day spray interval recommended on all silking corn
Oxford 0 1 0 No spray recommended
Palmyra 0 1 0 No spray recommended
Sabattus 0 6 2 One spray recommended for ECB on all silking corn
Wales 0 1 1 No spray recommended
Warren 0 1 11 One spray recommended for FAW on all silking corn
Wayne 0 2 0 No spray recommended
Wells I 0 0 0 No spray recommended
Wells II 1 3 7 One spray recommended for FAW on all silking corn

 

CEW: Corn earworm (Only fresh silking corn should be sprayed for this insect.)
ECB: European corn borer
FAW: Fall armyworm

Corn Earworm Spray Thresholds for Pheromone Traps

Moths caught per week Moths caught per night Spray interval
0.0 to 1.4 0.0 to 0.2 No spray
1.5 to 3.5 0.3 to 0.5 Spray every 6 days
3.6 to 7.0 0.6 to 1.0 Spray every 5 days
7.1 to 91 1.1 to 13.0 Spray every 4 days
More than 91 More than 13 Spray every 3 days

Thresholds apply only to corn with exposed fresh silk. Lengthen spray intervals by one day if maximum daily temperature is less than 80°F.

European Corn Borer Thresholds
Whorl stage:  30% or more of plants scouted show injury.
Pre-tassel-silk:  15% or more of plants scouted show injury.
Silk:  5 or more moths caught in pheromone traps in one week.

IPM Web Pages:
http://extension.umaine.edu/ipm/
http://www.pestwatch.psu.edu/sweet_corn.htm
http://www.umass.edu/umext/ipm/

Where brand names or company names are used it is for the reader’s information. No endorsement is implied nor is any discrimination intended against other products with similar ingredients. Always consult product labels for rates, application instructions and safety precautions. Users of these products assume all associated risks.

Published and distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914, by the University of Maine Cooperative Extension, the Land Grant University of the State of Maine and the U.S. Department of Agriculture cooperating.  Cooperative Extension and other agencies of the U.S.D.A. provide equal opportunities in programs and employment.