GROWING DEGREE DAY ACCUMULATIONS through Aug. 28th at the NWMHRS

Year        2000      1999      1998      1997
GDD42    2919      3188      3266      2593
GDD50    1831      2110      2166      1653

WEATHER
By Jim Nugent

Some much needed rain fell this past week in NW MI, though some areas received very little. Recent rainfall and evaporation at the NWMHRS are as follows:
 

	Evaporation	Rainfall	Evaporation less Rainfall	75% of Evaporation	75% Evaporation less Rainfall
Past 2 weeks	2.29	1.29	1.0	1.72	0.43
Past 4 weeks	4.82	2.55	2.27	3.62	1.07
Since May 1	23.13	10.58	15.15	17.35	6.77

PESTS AND DISEASES
By Jim Nugent

Apples: Apple maggot adult trap catches have declined rapidly in abandoned orchards since hitting their peak in late July and early August. This year many of the abandoned orchards and/or abandoned trees have no fruit, following last year's heavy crop on these trees. As a result, all of the apple maggots that emerge from these sites leave these hosts in search of fruit for egg laying, and thus, more pressure from migration into commercial orchards. The good news is that next year the population of apple maggots and codling moths in these sites will be down, so in-migration should be significantly lower. Second generation codling moth adults are still flying, so continue to monitor traps and spray as necessary. There will be no third generation of codling moth in NW MI this year.

Cherry: Cherry leafspot symptoms and defoliation have become much more prevalent during the past week. Expect this to worsen as a result of recent infection periods in the weeks to come. 

MISCELLANEOUS

NW Research Station Annual Open House

The annual Open House at the NW Michigan Horticultural Research Station will be held this week, on Thursday, August 31^st, beginning at 2:00 p.m.. The afternoon's educational program, from 2:00 to 5:00 p.m. is outlined on the following page.

Following the educational sessions, from 5:00 to 6:00 p.m. there will be a social hour. From 6:00 to 7:00 p.m. the Leelanau County Horticultural Society will hold a barbecue, followed by a short annual meeting and award presentations. Also following the barbecue, Parallel 45 Vines and Wines will hold their August meeting in the Station Conference Room. Tickets for the barbecue will be available at the door for $15. 

Sponsors for the Open House are the Michigan Agricultural Experiment Station, MSU Extension, the Northwest Michigan Horticultural Research Foundation and the Leelanau Horticultural Society. 

All are welcome, Please Come and Join Us!

See the following Educational Program Schedule for details.
 

NWMHRS Open House Educational Program -- Aug. 31, 2000
RESEARCHER	PROJECT	2:15-2:45	3:00-3:30	3:45-4:15	4:30-5:00	LOCATION
Dr. Gary VanEe, Dick Ledebuhr	Improved Spray Application in Grapes	X				Stop 1 Grapes
Dr. Annameik Schilder	Grape Disease Management Update	X	X			Stop 1 Grapes
Dr. Rufus Isaacs	Insecticide Trials in Strawberry and Grapes		X	X		Stop 1 Grapes
Dave Stocking, Dr. Stan Howell	Evaluation of Wine Cultivars			X	X	Stop 1 Grapes
Dr. Annameik Schilder, Dr. Rufus Isaacs, Dr. Charles Edson	Grape Integrated Crop Management Trial				X	Stop 1 Grapes
Dr. Oscar Liburd	Advances in Cherry Fruit Fly & Apple Maggot Management			X	X	Stop 1 Entomology
Dr. Ron Perry	Q&A on Apple Rootstocks & Training Systems	X	X			Stop 2 Apples
Jim Nugent, Dr. Greg Lang	Growing & Training Dwarf Sweet Cherries for Processing		X			Stop 2 Cherry Systems Trial
Dr. Gary VanEe, Dick Ledebuhr, Jim Laubach	Pesticide Application--An Integral Part of IPM			X		Stop 2 Apples
Dr. Amy Iezzoni	Growing Balaton Cherries--The Latest Information			X		Stop 2 Plant/Balaton Blk
Dave Epstein, Dr. Dan Waldstein	Michigan Apple Implementation Project--Pheromone Placement & Plum Curculio Trapping			X	X	Stop 2 Apples
Dr. Ron Perry	Cherry Rootstocks				X	Stop 3 Cherry Rootstocks
Dr. Mira Danilovich	Promising Plum Varieties				X	Stop 3 Plums
Dr. Jeff Andresen, Joe Merillat	Weather Data Collection and Information Dissemination	X	X			Stop 4 Lobby
Dr. Charles Edson	Ground Cover/ICM Alternatives in Bearing Cherries--Results After 5 Yrs.	X				Stop 5 Gregory's
Dr. Charles Edson	ICM Alternatives in Young Cherries		X			Stop 5 East 20
Dr. Mark Whalon	Plum Curculio Research	Poster in Pole Building
Dr. Ron Perry	Results of Various Rootstock & Apple Training System Trials	Posters in Pole Building

Please send any comments or suggestions regarding this site to: 
Bill Klein, kleinw@pilot.msu.edu

Last Revised:8-29-00