ONLA: Gay Williams, Ex. Sec. ������ľ����Э��

ONLA: 100 years old ������ľ����Э���ѳ�������

 

 

Basic Green: Dr. Mathers ��Basic Green�Ƕ�����Ψһ����ľ��Ϣ����

ENLT Team   ENLA������԰��԰�����ߣ��Ŷ�

 

A team of university professors in Horticulture, Plant Pathology, Entomology, regional and country extension agents
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OSU Nursery Short Course ����������ѧ����ѧ���ڿγ�

Dr. Hannah Mathers and
Pam Bennett co-chairman
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8,000 attendees    8ǧѧ��
120 presentations in three days 
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on topics related to:    �������⣺
Nursery Production    ��������
Landscape Design, Installation,
Maintenance    ������ơ�ʩ��������
Turf  ��Ƥ
Arboriculture  ��ľ��ֲ
Garden Center Management  ͥԺ��������

 

Ohio��s climate  ����������

 

USDA Plant Hardiness        Zones 5 to 6 (-29 to -15C)
150 to 180 frost free days
860 mm rain
Extremes:
 40 C ���
-29 C ���
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China��s Hardiness Zones ֲ��������й���ͼ

 

Traditional Tree Production  ��ľ�ij��深ֳ

Propagation��ֳ����:
Sexual (rare, mostly clonal)
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Asexual (most common method)
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grafting, rooted cutting and  tissue culture
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Traditional Tree Production ��ͳ��ľ������ģʽ

Whip Production  ����

Whip Production: Year One ������һ��

 

Year One: Rootstock Production һ����������

Seedling production ��������
    Fall Seedling Harvest  �＾�ջ���� Seedbed Digger �紲�ھ��
  Seedling Harvest �ջ����
  Seedling Grading and Pruning �����ķּ����޼�     Seedling Storage  �������