Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

Root-lesion nematode on walnut: Replants of California black walnut and unselected Paradox hybrid responded to preplanting soil fumigation in trials

Authors

B. F. Lownsbery
S. A. Sher

Authors Affiliations

B. F. Lownsbery is Assistant Nematologist, University of California, Davis; S. A. Sher is Assistant Nematologist, University of California, Riverside.

Publication Information

Hilgardia 12(5):7-12. DOI:10.3733/ca.v012n05p7. May 1958.

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Abstract

Infestations of root-lesion nematodes—Pratylenchus vulnus—occur in all important walnut growing areas in California and high population densities cause a disease of economic importance. The disease is characterized by stunting, die-back, and chlorosis in the tops of the trees; by yield reduction; and by root symptoms consisting of black lesions, longitudinal cracking, and even death of entire roots. The disease has been induced experimentally by adding a suspension of the root-lesion nematodes to California black walnut seedlings.

Lownsbery B, Sher S. 1958. Root-lesion nematode on walnut: Replants of California black walnut and unselected Paradox hybrid responded to preplanting soil fumigation in trials. Hilgardia 12(5):7-12. DOI:10.3733/ca.v012n05p7
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