California Agriculture
California Agriculture
California Agriculture
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California Agriculture

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New pear roots for old … inarching decline-immune seedlings into susceptible peas trees

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Authors

R. L. Rackham
B. E. Bearden
R. S. Bethell
R. H. Gripp
G. W. Morehead
J. W. Osgood, Agricultural Extension Service, University of California

Publication Information

California Agriculture 18(6):12-14.

Published June 01, 1964

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Abstract

An agricultural extension project was initiated in the spring of 1962 to determine whether pear trees susceptible to decline could be saved by adding a new nonsusceptible root system around the base of the trees. Although the cause of pear decline was not yet known, it was an established fact that pear trees on Oriental pear and Old French (churn bottom) rootstocks were most susceptible to the disease. Rootstocks produced from Old Home cuttings or Domestic French seedlings grown from a seed source known to be free of Oriental pear pollination were for the most part immune to decline.

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New pear roots for old … inarching decline-immune seedlings into susceptible peas trees

R. L. Rackham, B. E. Bearden, R. S. Bethell, R. H. Gripp, G. W. Morehead, J. W. Osgood
Webmaster Email: wsuckow@ucanr.edu

New pear roots for old … inarching decline-immune seedlings into susceptible peas trees

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

R. L. Rackham
B. E. Bearden
R. S. Bethell
R. H. Gripp
G. W. Morehead
J. W. Osgood, Agricultural Extension Service, University of California

Publication Information

California Agriculture 18(6):12-14.

Published June 01, 1964

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

An agricultural extension project was initiated in the spring of 1962 to determine whether pear trees susceptible to decline could be saved by adding a new nonsusceptible root system around the base of the trees. Although the cause of pear decline was not yet known, it was an established fact that pear trees on Oriental pear and Old French (churn bottom) rootstocks were most susceptible to the disease. Rootstocks produced from Old Home cuttings or Domestic French seedlings grown from a seed source known to be free of Oriental pear pollination were for the most part immune to decline.

Full text

Full text is available in PDF.

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