Root-lesion nematode on walnut: Replants of California black walnut and unselected Paradox hybrid responded to preplanting soil fumigation in trials
AuthorsB. F. Lownsbery
S. A. Sher
Authors AffiliationsB. F. Lownsbery is Assistant Nematologist, University of California, Davis; S. A. Sher is Assistant Nematologist, University of California, Riverside.
Hilgardia 12(5):7-12. DOI:10.3733/ca.v012n05p7. May 1958.
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.
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Hybrid grain sorghum trials: Yields of 23 hybrids tested in growing areas of state under varying conditions showed increases over old line varieties
Feeding value of oat hay: Stage of plant maturity at harvest affected total digestible nutrients in Kanota oat hay in evaluation trials with sheep
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Fresh fruits and vegetables: Deliveries per week and refrigeration available for fresh fruits and vegetables affected by types of retail stores
The use of chemical data in the prognosis of phosphate deficiency in soils
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