California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Archive

A quick method of estimating chill hours

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

Laurence R. Costello , University of California

Publication Information

California Agriculture 38(3):22-24.

Published March 01, 1984

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Not available – first paragraph follows: Most deciduous fruit and nut trees require a period of cold temperature below 45°F during the winter to induce dormancy and promote satisfactory fruit and shoot development in the spring. The length of cold period required, or chill requirement, has been established for most commercial fruit and nut varieties; values vary considerably among species. For example, most apple varieties require more than 1,000 chill hours; almonds generally need only 200 to 500.

Full text

Full text is available in PDF.

Author notes

The author thanks Ellen Gates, Statistician, and Richard Snyder, Bioclimatologist, both with UC Cooperative Extension, for their assistance.

A quick method of estimating chill hours

Laurence R. Costello
Webmaster Email: wsuckow@ucanr.edu

A quick method of estimating chill hours

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

Laurence R. Costello , University of California

Publication Information

California Agriculture 38(3):22-24.

Published March 01, 1984

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Not available – first paragraph follows: Most deciduous fruit and nut trees require a period of cold temperature below 45°F during the winter to induce dormancy and promote satisfactory fruit and shoot development in the spring. The length of cold period required, or chill requirement, has been established for most commercial fruit and nut varieties; values vary considerably among species. For example, most apple varieties require more than 1,000 chill hours; almonds generally need only 200 to 500.

Full text

Full text is available in PDF.

Author notes

The author thanks Ellen Gates, Statistician, and Richard Snyder, Bioclimatologist, both with UC Cooperative Extension, for their assistance.


University of California, 2801 Second Street, Room 184, Davis, CA, 95618
Email: calag@ucanr.edu | Phone: (530) 750-1223 | Fax: (510) 665-3427
Website: http://calag.ucanr.edu