Nematode resistance in plums: Various plum rootstocks found resistant to two widespread species of several recently classified root-knot nematodes
AuthorsC. J. Hansen
B. F. Lownsbery
C. O. Hesse
Authors AffiliationsC. J. Hansen is Professor of Pomology. University of California, Davis; B. F. Lownsbery is Assistant Nematologist, University of California, Davis; C. O. Hesse is Professor of Pomology, University of California, Davis.
Hilgardia 11(10):9-13. DOI:10.3733/ca.v011n10p9. October 1957.
Earlier field trials indicated that certain plum rootstocks—Marianna 2623, Marianna 2624, and Myrobalan 29—are resistant to the one species of root-knot nematode recognized at the time the work was done. However, since then several species of root-knot nematodes have been classified. Two of these species—Meloidogyne incognita var. acrita and M. javanica—are known to cause serious trouble in California orchards, so additional work was necessary to find out if the rootstocks are resistant to both species.
Also in this issue:Integrated management of water: Interrelation of internal and external interests for common benefit possible through the functioning of public districts
Spring flow affected by brush: Removal of nearby deep-rooted plants improved water flow of springs in studies in foothills of Madera and Lake counties
Nitrogen carryover on range: Test plots on sagebrush range indicate effectiveness of nitrogen fertilizer can carry over into third growing season
Sprinkler fertilizing system: Continual feeding of crop plants by applying fertilizers with irrigation by sprinkler systems demonstrated to be effective
Coniferous seedling survival: Jeffrey pine seedlings outlived white fir, ponderosa pine, and incense cedar in drought tests involving simulated dew
Brushing for frost protection: Method and materials studied to determine ability to protect desert grown specialty vegetables against hazard of freezing
Blue-green mold on citrus: Ammonia gas used in citrus packing plants as fumigant for control of blue-green mold on Valencias, navels and lemons
Leaf malady of avocado trees: Leaves of trees of several varieties on various rootstocks seriously affected when placed under glasshouse conditions
The effect of riboflavin and the filtrate factor on egg production and hatchability
The vitamin-B complex as related to growth and metabolism in the pig