Noninfectious bud failure of almonds in California the nature and origin
AuthorD. E. Kester
Hilgardia 23(12):12-14. DOI:10.3733/ca.v023n12p12. December 1969.
Noninfectious bud failure (BF) is a disorder caused by a peculiar genetic abnormality characteristic of certain almond varieties. It is a serious economic problem in that many thousands of trees have had to be replaced and at least one variety, Jordanolo, is being eliminated because of its susceptibility to BF. The disorder is expressed by the failure of vegetative buds to grow in the spring. This, along with other roughbark characteristics, results in a distinctive growth pattern sometimes also described as “crazy-top.” Trees do not die but production in individual trees is reduced in proportion to the severity of the symptoms. Experimental work on the disorder can be divided into two basic problems discussed here in two separate articles. One concerns the nature of the disorder and the origin of the BF condition, and is studied in the first article. The other (studied in the second article) involves the sporadic appearance of BF in such important varieties as Nonpareil, and deals with practical methods to identify and control it.
Also in this issue:Do we still need agricultural research?
Decomposition of organic wastes and amendments studied at Riverside
Pesticides increase seed yields of late safflower
Excised honeybee abdomens and the biosonic analyzer system aid pharmacological and toxicological investigation
Mechanized potting in gallon containers speeds nursery marketing of ornamentals
Tansy ragwort control aided by the establishment of seedfly from Paris
Noninfectious bud failure of almonds in California (2) identification and control of bud failure in almond varieties
Brussels sprout ring spot control with fungicides
Sweet orange germination and growth aided by water and gibberellin seed soak
Lettuce emergence as affected by depth of seeding
Mites of the family Caligonellidae (Acarina)