If you are interested, just send me email to that effect. Newsletter=
=20
follows:
VEGETABLE AND SMALL FRUIT PEST MESSAGE
JULY 12, 1995
VOLUME 6, NO. 10
BIRD CONTROL DEMONSTRATIONS JULY 25 & 26
Many sweet corn growers have been struggling to=20
control blackbirds and crows. On July 25 and 26, Laura=20
Henze of the USDA/APHIS Animal Damage Control will conduct=20
workshops in eastern and western Mass. on blackbird control=20
methods in sweet corn, including shooting and trapping as=20
well as visual, auditory, and chemical frightening devices.=20
One of the control methods demonstrated will be a=20
chemical frightening agent called Avitroltm. Avitrol is a=20
Restricted Use pesticide and a current applicator's license=20
is required. Since Avitrol controls blackbirds, you also=20
need a permit from the Division of Wildlife. Attendance at=20
this workshop will qualify as instruction in bird control to=20
allow you to obtain a permit from the Mass. Div. of=20
Wildlife. Also, one contact hour will be granted toward=20
pesticide applicator recertification training.=20
If you plan to attend, please complete the attached=20
registration form and return it to Laura Henze on the=20
address listed. You may also call her office at 413-253-
2403 for more information. The locations and times are as=20
follows:
Tues. July 25, 1:00 p.m.- 3:00 p.m. SITE TO BE=20
ARRANGED, IN EASTERN MASSACHUSETTS. (Will be announced in=20
July 19 newsletter, or call the USDA office):
Wed. July 26 10:00 p.m. - noon. Al McKinstry's barn in=20
Hadley, MA. (From I-91, exit on Rte 9 East, over the river.=20
Take the first left turn just after the bridge on Crosspath. =20
Turn left on Cemetery Rd, first right on Honeypot, follow=20
road to the red shed.)
SWEET CORN: LOW FLIGHT ACTIVITY
We are in that =93window=94 of low flight activity this=20
week, when European corn borer is between generations, and=20
the migratory moths (corn earworm and fall armyworm) have=20
not hit New England -- yet. In most areas, silk does not=20
need any sprays at this time. Where captures are 2-3/week, 6=20
day spray interval on silk should control the low numbers of=20
CEW that are present (5 days if 4-5 moths).=20
In many locations, pretassel infestations are still=20
above threshold. Scouting now may save you some sprays,=20
because it will show you where corn is still over threshold=20
and where infestations are dropping. Young corn can be=20
expected to have low borer activity by next week.=20
If you do not have a corn earworm trap on your farm=20
yet, now is the time to get one! Nothing beats knowing that=20
earworm is here on the day they arrive. Order one or two=20
Scentrytm Heliothis traps for your farm, with Hercontm =20
luretape for corn earworm, from Great Lakes IPM (517-268-
5693) or Pest Management Supply (608-437-4883).
Sweet Corn Field Report, July 8-12
TOWN
CEW
ECB
PT/GT-
-
% ECB
DATE
WESTMINSTER
0
1
9
7/11
S. DEERFIELD
0
6
-- 7/10HATFIELD 0 0 18 7/10
HADLEY=20 0 0 2-10 7/10
SO. HADLEY 0 0 12-27 7/10
FEEDING HILLS 1 2 3-40 7/10
SOUTHWICK 0 2 36 7/11
SALISBURY 0 1 8-40 7/7
IPSWICH 2 0 12-21 7/8
N. ANDOVER 0 3 12-28 7/8
DANVERS 1 0 10-27 7/8
SPENCER 1 0 14-23 7/11
BERLIN 3 0
-- 7/12PAXTON 1 2 15-28 7/11
NORTHBRIDGE 0 2 37-42 7/11
MILLIS 3 5 19 7/10
HANSON 2 1 24 7/10
--REHOBOTH=20 1 1
-- 7/12SEEKONK 5 7 35 7/12
ROCHESTER 3 5 35 7/12
Special thanks to Michael Yates, Jim Mussoni, Ray Pestle,=20 Kathleen Leahy and Alden Miller for calling in trap=20 captures.
WPS: THE TIME TO COMPLY IS NOW. Worker Protection Standards requirements are now in=20 effect and apply to all farmers who use any EPA-labeled=20 pesticide and who have hired employees. All WPS=20 requirements must be followed, including those listed on the=20 label and those referenced. Label requirements include=20 personal protective equipment (PPE), the restricted entry=20 interval (REI), and the requirement for double notification,=20 if needed. Referenced requirements include safety training=20 for workers and handlers, decontamination sites on the farm,=20 worker notification, and central information displays.=20 Carefully review the labels of all pesticides you use=20 for WPS information. Educate yourself about the WPS and how=20 it applies to your farm. You can obtain more information from Natalia Clifton,=20 UMASS Extension, 413-545-1044 or Lillian Rivera, Mass. DFA,=20 617-727-3020. Pesticide and equipment dealers and catalogues=20 have many of the WPS training materials, posters, signs and=20 forms that are needed to comply.=20 Enclosed with this newsletter is a list of REI for=20 commonly used materials in vegetables and small fruits.=20
PARTNERS WITH NATURE GROWS IN 1995. Partners with Nature (PWN), Massachusetts' IPM=20 Certification program, continues to grow. This year, 28=20 farms certified their sweet corn and 18 farms certified=20 their strawberry crops through the program. Farmers who=20 enroll and complete the crop-specific standards receive a=20 certificate of recognition from the Mass. Department of Food=20 & Agriculture (MDFA), IPM posters, brochures, & leaflets, an=20 IPM education kit developed by MDFA to help growers improve=20 their marketing skills, and license to use the Partners with=20 Nature logo. Press releases are also provided to local news=20 media. Growers using IPM to produce potatoes, cole crops or=20 tomatoes can sign-up for IPM Certification until the end of=20 July. PWN is a collaboration of MDFA, UMass Extension, and=20 the USDA Consolidated Farm Services Agency (CFSA). For more=20 information, contact Craig Hollingsworth (UMASS Extension,=20 413-545-1055), Iliana Rivas (MDFA, 617-772-3020, ext 129) or=20 your local CFSA office. --Craig Hollingsworth TOMATO Leaf curling. Several growers have been concerned about leaf=20 curling. This condition is an upward curling or rolling=20 lengthwise along the leaflets, beginning low on the plant=20 and progressing upward. There are no other symptoms such as=20 spotting, yellowing or scorching, and the leaves have a=20 healthy green color. This curling is associated with=20 periods of high light intensity. High temperatures may also=20 be a factor. Although the appearance of these leaves may=20 seem alarming, this is a common occurrence and does not=20 appear to adversely affect the plant or tomato yield.=20 --John Howell Fungicide recommendations from TOM-CAST: Initial fungicide=20 applications should have been made to all crops, except=20 perhaps very late-planted blocks. DSV's have accumulated=20 steadily but slowly this week, totaling 6-7 from 7/2-7/9. =20 We do not have the update for 7/10-7/12. Using the=20 threshold of 15 DSV's for the second fungicide application,=20 we could expect a 10-14 day interval to be recommended for=20 fungicide sprays in the coming week.=20
TOM-CAST Accumulated DSV'S=20 ACTON SOUTH DEERFIELD DATE DAILY ACC.
DAILY ACC.
DSV DSV
DSV DSV
7/2 1 31
0 32
7/3 1 32
1 33
7/4 1 33
1 34
7/5 0 33
0 34
7/6 1 34
0 34
7/7 1 35
2 36
7/8 1 36
1 37
7/9 1 37
1 38
POTATO: INSECTS AND DISEASES Whether or not growers are putting out spray=20 applications for insect control, it is critical to remember=20 to maintain good fungicide coverage for control of late=20 blight and early blight. This is especially true because=20 of the risk that late blight will show up in Massachusetts=20 this season. Based upon disease forecasting models for=20 potato, using the weather data collected at the So.=20 Deerfield Research Farm, growers should be on a 7-day=20 fungicide schedule for late and early blight control. The Colorado potato beetle is between generations. =20 New summer adults have begun to emerge in the southern=20 Connecticut River Valley and widespread emergence can be=20 expected later this week. We can expect the first second- generation eggs to be laid by next week. In fields treated=20 with Admiretm , there is the potential for the material to=20 start loosing its effectiveness by late July. Therefore,=20 all potato growers should watch closely for eggs and new=20 hatch. If Admire was used, growers SHOULD NOT use Provadotm =20 as in the second generation. If you do, you are asking for=20 rapid development of resistance. Instead, use BT products. =20 Continue to watch for potato leafhopper and aphids.=20 Thus far, aphid numbers have been low, but frequently begin=20 to build up at this time of year. --Dave Ferro and Ruth Hazard ASPARAGUS At this time of year it is easy to forget about=20 asparagus. However, it is important to keep asparagus=20 beetle under control and prevent damage to asparagus=20 foliage. Consult the 1994-95 New England Vegetable=20 Management Guide for materials. Applications directed=20 toward the beetle will also control the asparagus leaf=20 minor, which vectors Fusarium moniliforme.=20 Where trade names or commercial products are used, no=20 company endorsement or product endorsement is implied or=20 intended. Always read the label before using any pesticide. =20 The label is the legal document for product use. Disregard=20 any information in this newsletter if it is in conflict with=20 the label. ************************************ Edited by Ruth Hazzard, with the Veg. ICM Summer Staff: Joe=20 Marcoccia, Dan Wasiuk, Jim Burak, & Renate Karle. ************************************
--=20 BERT SZALA=09=09 =20 UMASS EXTENSION/IPM DEPARTMENT OF ENTOMOLOGY=09=09PHONE: (413)545-1043 BOX 30210=09=09=09=09 545-2230 UNIVERSITY OF MASSACHUSETTS=09=09FAX: (413)545-5858 AMHERST MA 01003-0210=09=09=09email: berts@umext.umass.edu