UPCOMING
EVENTS REMINDER:
COFFEE
POT MEETINGS -
Wednesdays from 10 a.m. until 12 noon
| 6/13/07 |
Roberto
Fred vineyard |
Dunkirk,
NY |
| 6/20/07 |
Fred
Luke vineyard |
North
East, PA |
| 6/27/07 |
Rick
Walker vineyard |
Forestville, NY |
|
|
| Grape Integrated
Pest Management |
|
Tim
Weigle |
What is That?
I have been getting a number of reports of Ladybug larvae in vineyards.
Although they are typically around most years it appears that they are
out in larger numbers this year. Lady bug larvae are easily identified
by their body which is alligator shaped with three sets of legs toward
the front of the body and four orange spots located in their mid section
(Thanks to Mark Gray up in Niagara County for sending me this picture).
The ladybugs in the vineyards I visited yesterday were starting to change
over to adulthood and had already gotten to the yellowish-orange blob
with black spot stage (see picture on the right).
 |
 |
I have heard some concerns expressed that these were Multicolored Asian
Ladybeetle. I must admit that I cannot tell the difference between the
native ladybugs that everyone enjoys so much and MALB when they are in
the larval stage. However, this is not that important if you keep in mind
that in the larval and adult stages of all the ladybeetles are voracious
predators of other insects, especially soft bodied insects and even MALB
will be beneficial in your vineyard at this time of year. I think you
will see that in the near future the ladybeetles will be leaving the vineyard
for better feeding opportunities.
Diseases
The immediate prebloom period is a critical time for protecting your vines,
and particularly the clusters from the four major diseases - Phomopsis,
powdery
mildew, black
rot and downy
mildew. Even with the abundant sunshine forecast for the area
in the next week (if we can dodge tomorrow) everyone is aware at how quickly
forecasts change.
Do not get caught trying to get an application on during inclement weather (wind and rain). Applying sprays when conditions favor coverage and drying is a critical factor in the success, or failure, of a spray program.
Insects
While the cold weather seemed to decrease GBM {grape
berry moth} catches over the past two days we still found a good number
of them in the pheromone traps as well as grape
leafhopper and potato leafhoppers in the malaise traps. Check vineyards
now for the yellow pin-point stippling of sucker and lower canopy leaves
that is indicative of grape
leafhopper feeding to see if an insecticide is necessary during the
immediate postbloom spray {2007
New York and Pennsylvania Pest Management Guidelines for Grapes}.
| Grape
Farm Business Management |
|
Barry
Shaffer |
What is the Top Management Priority This Week? Prebloom Fungicide Spray!
Growers need to prioritize their efforts throughout the course of the year. The
top priority now is a prebloom fungicide spray. On average, this
is a critical time to protect your crop so get good coverage (spray every
row) and use products to protect against the four main diseases. The immediate
prebloom and first postbloom fungicide sprays rank 2nd and 3rd in my cost/benefit
list of production practices trailing only under-the-trellis weed management.
| Update
from North East, PA |
|
Bryan
Hed |
| Here
is a brief update from North East PA. |
Weather:
The rainy period earlier this week delivered 0.66” of rain to
our location. We have accumulated 338.4 growing degree days since
April 1. Interestingly, our gdd gain for the month of May was
289, exactly what we recorded in 1999. However, we are still about
90 gdds behind 1999 as of June 6. Above average temperatures will
dominate the next couple of days, dropping back into the low 70s
by Saturday, June 9. Wind speeds in the mid to upper teens will
confound efforts to apply the immediate pre bloom spray for Thursday
and Friday, but will fall back to the single digits by the wee
hours of Saturday morning. Wet, windy conditions are forecast
for late afternoon-early evening, Friday that could generate another
infection period for fungal diseases. |
|
Diseases:
The wetting period that occurred earlier this week generated
an infection period for all fungal diseases. The good news is
that we have only had 5 powdery
mildew primary infection periods at our location since bud
break, which is below average for this point in time. Symptoms
of earlier Phomopsis
leaf and shoot infection can be commonly observed on the first
3-4 internodes of shoots in our vineyard. Although I have not
yet observed any weather generated black
rot leaf and shoot infection yet, inoculations conducted
2-3 weeks ago have generated leaf, shoot, and cluster rachis
infections. This means that any black rot infection that may
have occurred around mid May, can now be observed on leaves,
shoots, and cluster rachises of the first four internodes. These
infections now contain fruiting bodies of the fungus that are
capable of releasing spores during wetting periods of the upcoming
fruit susceptibility period and may elevate the risk of fruit
rot, particularly in vineyards that were hard hit with black
rot last year and already have elevated inoculum loads.
|
| Weather
Facts |
|
Tim
Weigle and Edith Byrne |
| Fri.,
6/8 |
Increasing clouds, with a high near 81°.
Friday night: A 60% chance of showers/thunderstorms likely,
mainly before 11pm. Cloudy during the early evening, then
gradual clearing, with a low near 54°. |
| Sat.,
6/9 |
Sunny, with a high near 74°.
Saturday night: Mostly clear, with a low near 51°. |
| Sun.,
6/10 |
Mostly
sunny, with a high near 74°.
Sunday night: Mostly clear, with a low near 57°.
|
| Mon.,
6/11 |
Mostly sunny, with a high near 77°.
Monday night: Mostly clear, with a low near 59°. |
| Tues.,
6/12 |
Partly cloudy, with a high near 80°.
Tuesday night: Mostly clear, with a low near 62°. |
| Wed.,
6/13 |
Sunny, with a high near 79°. |
| Weather
Facts Information: through Wednesday 6/6/2007 |
|
Date
|
High
|
Low
|
Pct.
|
GDDs
accum.
|
Jan.
GDDs
|
Apr.
GDDs
|
|
6/6/07
|
61
|
43
|
0
|
2
|
541.5
|
492.5
|
|
6/6/06
|
76
|
54
|
0
|
15
|
510.5
|
491
|
|
6/6/05
|
85
|
72
|
T
|
28.5
|
398
|
372.5
|
|
| |
Jan.
accum. |
Apr.
accum. |
per/day
accum. |
| Average
GDDs: |
442.92 |
419.20 |
14.42 |
|
June Precipitation: |
0.11" |
|
| Average
Precipitation (June) |
3.35" |
|
| Year-to-Date
Precipitation |
12.66" |
|
| Average
Year-to-Date Precip. (Jan - May) |
13.61"
(down 1.06") |
| Average
High |
74.0° |
|
|
| Average
Low |
54.8° |
|
|
| 6.8
Days ahead Jan. 1 Average |
5.1
Days ahead Apr. 1 Average |
| 0.1
Days ahead 2006 (Apr. 1) |
8.3
Days ahead 2005 (Apr. 1) |
| Phenology
Information: |
| Bloom
AVERAGE = 6/16, 607.58 Jan GDDs, 584.19 April GDDs |
| Budbreak
5/9/2007 - Fredonia West Tier location (average = 5/6) |
| (thanks
to Kelly Link and the Fredonia Vineyard Staff for this
data) |
|
You
can follow the DAILY high and low (updated daily) by visiting
http://lergp.cce.cornell.edu/Dailys2007.htm.
Also, from
the main
weather page (http://lergp.cce.cornell.edu/weather.htm)
you can navigate to other weather information/pages that
we maintain for your information and use.
|
|
| The
weather proverb from the Farmer's Almanac this week is: |
|
Warm and nice, but the lake's still like ice .
. . |
Sustainable Viticulture Workbook
Project
We continue to hear from growers and are still asking for more
volunteers to go through the workbook, answering the questions
that pertain to them (and let us know what questions do not pertain
to their operation)! Please let us know if you are interested
by emailing Edith (emb35@cornell.edu
or grape@netsync.net)!
We would love to hear from you.
Update - We have met with growers from Chautauqua,
Niagara, Cattaraugus Counties in New York and several growers
from PA. for this project which is a cooperative effort of growers,
processors, the Finger Lakes Regional Grape Program, Long Island
Grape Program and the Lake Erie Regional Grape Program.
Going over the questions in the workbook typically takes
about 90 minutes. Depending on your operation and the type of
grapes you are growing doesn't make any difference either - we
are interested in everyone's input, no matter how many
acres you have. Once you have completed the first phase of going
through the workbook and answering the questions scaled from 1
(best practice) to 4 (should look at this practice to
see if it can be improved), a follow-up visit is scheduled
with a member of the SWCD from your county (they have the money
to help with cost sharing) to discuss how you might be able to
move the practices that received a rating of 4 to a rating closer
to 1 - this is the Action Plan meeting.
The workbook questions are painless, self-reflective and
the comments made by growers' are very positive - including how
going over the questions makes them think about their total operation,
or how they might be able to do or think about something differently,
etc.
We have appointments set up with more growers through the month
for both the workbook portion and Action Plan meetings... If you
are interested in working with us on this project please send
Edith an email or give
her a call at 716.672.6830 so she can schedule an appointment
with you.
Lake
Erie Regional Grape Program Extension Team Members:
| Andy
Muza |
Extension
Agent, Erie County, PA Cooperative Extension |
(814)
825-0900 |
| Barry
Shaffer |
Area
Extension Farm Business Management Educator |
(716)
679-3185 |
| Tim
Weigle |
Sr.
Area Extension Educator, Grape IPM |
(716)
672-6830 |
For
any questions or comments on the format of this update
please contact Tim Weigle at: timweigl@netsync.net
|
| 412
E. Main Street, Fredonia, N.Y. 14063 |
Telephone:
716-672-5296 |
E-mail:
Webmaster
|
|
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