November 2024 - 20

PLUMS
This is a genetic wealth which is uncommon for North
America. This is a substantial opportunity for future plum
breeders to develop new, useful varieties.
Processing plums
Stanley
The most common varietal plum name in the
Northeast is Stanley or, perhaps, Italian. Many people
mistakenly believe Stanley is a fresh variety. It was
named about 100 years ago by Cornell's Geneva Station
as a processing type for canners. Up until a few decades
ago, Stanley was grown by many New York farms
for Beechnut for baby food. When Beechnut moved
production to Michigan, many New York growers simply
dumped Stanley varieties into the fresh market despite
a mediocre quality for this use. This action tended to
degrade the whole category of fresh plums for many
New York consumers.
Damson
Damson is the most well-known European plum used
for jam in North America. It comes off the trees in mid- to
late September in Geneva. Because of its high sugar and
tannin, it lately has been increasingly used in alcohol. The
Damson name relates to Damascus, Syria, brought to
Western Europe by returning Crusaders.
European Brandy plums
Lately there has been increased interest in using
the high-sugar brandy plums for various processing
purposes. The three best known for this use are
Pozegaca, Lohr and Wangenheim.
Disease susceptibility, cold hardiness
The fungal disease called black knot is native to
North America. Most diploids with American ancestry
are unaffected by it, while the Europeans are typically
susceptible. If black knot is not controlled, it can quickly
kill trees.
Because the diploid plums typically bloom a week to 10
days earlier than the Europeans, affected trees are more at
risk of losing part of a crop to late spring frosts, particularly
on sites with poor air drainage. In a similar fashion to
peaches, some tender diploid plums may lose flower
buds in the winter if the air temperature drops to -15° F.
Many plums are not self-fertile and a diploid will not set
fruit on a European, nor will the reverse pattern set fruit.
Diligent nurserymen should offer pollination charts for
both the Europeans and the diploids.
Jay Freer is a stone fruit and pear technician at the
Cornell University Agricultural Experiment Station in
Geneva, New York.
There is a Berkeley Pump to fit your growing needs:
irrigation, packing shed or green house.
Call us for a FREE product catalog
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11291 Lakewood Blvd., Holland, MI 49424
20 | NOVEMBER 2024

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November 2024

Table of Contents for the Digital Edition of November 2024

Editor's Letter
Pome Fruit: Industry initiative
Irrigation & Water Management: Maintaining grove water
Tree Fruit: Grove insights
Plums: Plum factors
Great Lakes EXPO News: Juice processing and berry fertilization
Great Lakes EXPO Schedule
40 Under Forty Class of 2024
Soil Health: Cutting chemical fumigation
Labor: Tree fruit worker decision sparks reaction
Tree Fruit Variety Showcase
2025 Fruit & Nut Growers Buyers' Guide
Organic Grower Fall 2024
Fresh Views: A team approach to plant disease management
Farm Market & Agritourism: Choosing the right market channel
Ag Labor Review: Candid discussions regarding ag labor dilemmas
Classifieds
Advertiser Index
November 2024 - 1
November 2024 - 2
November 2024 - 3
November 2024 - Editor's Letter
November 2024 - 5
November 2024 - Pome Fruit: Industry initiative
November 2024 - 7
November 2024 - 8
November 2024 - 9
November 2024 - Irrigation & Water Management: Maintaining grove water
November 2024 - 11
November 2024 - 12
November 2024 - 13
November 2024 - Tree Fruit: Grove insights
November 2024 - 15
November 2024 - 16
November 2024 - 17
November 2024 - Plums: Plum factors
November 2024 - 19
November 2024 - 20
November 2024 - 21
November 2024 - Great Lakes EXPO News: Juice processing and berry fertilization
November 2024 - Great Lakes EXPO Schedule
November 2024 - 24
November 2024 - 40 Under Forty Class of 2024
November 2024 - 26
November 2024 - 27
November 2024 - 28
November 2024 - 29
November 2024 - 30
November 2024 - 31
November 2024 - 32
November 2024 - Soil Health: Cutting chemical fumigation
November 2024 - 34
November 2024 - 35
November 2024 - Labor: Tree fruit worker decision sparks reaction
November 2024 - 37
November 2024 - Tree Fruit Variety Showcase
November 2024 - 39
November 2024 - 40
November 2024 - 41
November 2024 - 42
November 2024 - 2025 Fruit & Nut Growers Buyers' Guide
November 2024 - 44
November 2024 - 45
November 2024 - 46
November 2024 - 47
November 2024 - 48
November 2024 - 49
November 2024 - 50
November 2024 - 51
November 2024 - 52
November 2024 - 53
November 2024 - 54
November 2024 - 55
November 2024 - 56
November 2024 - 57
November 2024 - 58
November 2024 - 59
November 2024 - 60
November 2024 - 61
November 2024 - 62
November 2024 - Organic Grower Fall 2024
November 2024 - 64
November 2024 - 65
November 2024 - 66
November 2024 - 67
November 2024 - Fresh Views: A team approach to plant disease management
November 2024 - 69
November 2024 - 70
November 2024 - 71
November 2024 - Farm Market & Agritourism: Choosing the right market channel
November 2024 - 73
November 2024 - Ag Labor Review: Candid discussions regarding ag labor dilemmas
November 2024 - 75
November 2024 - Classifieds
November 2024 - 77
November 2024 - Advertiser Index
November 2024 - 79
November 2024 - 80
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https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyersguide-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2021
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https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2021
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https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2021
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https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyersguide-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2020
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https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2020
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https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2019
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https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2019
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https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2019
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