Nematodes in plant quarantine: Detection of plant parasitic nematode infestations difficult because of complexity of possible causes of visible symptoms
AuthorW. H. Hart
Author AffiliationsW. H. Hart is Extension Specialist in Plant Nematology, University of California, Davis.
Hilgardia 13(9):4-5. DOI:10.3733/ca.v013n09p4. September 1959.
Nearly all the major crop pests in California–including plant parasitic nematodes–have been introduced on or in host plants or as contaminants on articles of commerce. There are, however, a number of nematode species of serious economic importance in other parts of the world which are not known to occur in California. The golden nematode is a serious pest of potato in Europe and on Long Island, New York; the sting nematode injures many crops in the southeastern states; the soybean cyst nematode, in the Mississippi Valley and other southeastern states, attacks soybean, snapbean, and other plants of the bean family; and the burrowing nematode, reported to be the cause of spreading decline of citrus in Florida, are some of the nematode species not yet established in California.
Also in this issue:Plant nematology in California: State's: Crop losses led to first department for research in plant nematology to be established by experiment stations
Nematode structure and life: Wide range of life habits requires combination of characters for identification of parasites classified among nematodes
Field and vegetable crops: Wide ranges of crops and climatic conditions in California necessitate development of several diverse control programs
Nematodes in grape production: Distribution records show multiple infestations of two or more species of nematodes to be in most of California's vineyards
Citrus and avocado nematodes: Spread by nursery stock, by contaminated implements, and by water from irrigation canals that may drain infested land
Deciduous fruit and nut trees: Root-knot nematode on peach and root-lesion nematode on walnut cause serious problems for California orchardists
Nematodes on ornamentals: Root-knot, root-lesion, and more specialized or exotic forms may cause acute injuries in nursery, greenhouse, and garden
Biochemical relationships: Nematodes, plants, and linking soil components of complex problem of widespread, important pest of state's agriculture
Natural enemies of nematodes: Studies of complex soil environment aimed at favoring fungi and other organisms that limit plant nematode populations
Chemical control of nematodes: Effective nematocides relatively few in number but available in several forms for field use on perennial and annual crops
Factors influencing the results of fumigation of the California red scale
Inheritance of resistance to hydrocyanic acid fumigation in the California red scale