Root-lesion nematode injury: Trials under way to determine resistant or tolerant rootstocks for fruit and nut trees
AuthorsE. F. Serr
L. H. Day
Authors AffiliationsE. F. Serr is Lecturer in Pomology and Associate Pomologist in the Experiment Station, Davis; L. H. Day is Associate Pomologist in the Experiment Station, Davis.
Hilgardia 3(8):3-4. DOI:10.3733/ca.v003n08p3. August 1949.
The root-lesion—or meadow—nematode has been found widely scattered in California by United States Department of Agriculture and Experiment Station workers. In 1941 it was found associated with die-back of bearing sweet cherry trees in Riverside County. About the same time it was found on walnut trees showing poor vigor in Ventury County. Since then it has been identified on walnuts in several southern California counties and also in the San Joaquin, Sacramento, and Santa Clara valleys and Sierra Nevada foothills. Fig and olive roots have been reported frequently infested with this nematode. Apple, almond, peach, pear, plum, and quince roots have been reported infested.
Also in this issue:California apples: Acreage and production declining due to unfavorable grower earnings
Drift of sprays, dusts, spores: Radioactive tracers used in determining distribution pattern of small airborne particles
Egg production: Application of principles of genetics may hasten improvement of poultry
Timber growth studies: Tree growth in Whitaker's Forest, Tulare County, during 33-year period; 1915 to 1948
Successful dehydration of clingstone peaches: Clingstone peaches can be dried successfully when proper procedure is followed carefully
Citrus fruit size studies: Experimental test of 2,4-D sprays to increase orange and grapefruit fruit size
Soil test for phosphate: New method of chemical analysis of soil for available phosphate is rapid and accurate
Downy mildew in spinach: Eventual control of damaging disease may be indicated by studies of Iranian spinach
Vitamins in walnut meats: Studies made to determine content of vitamins thiamine, riboflavin, niacin
Fumigation with calcium cyanide dust