Nematode resistance in peaches: Resistance to two widespread species of root-knot nematode ranged from almost immunity to none in peach seedling study
AuthorsC. J. Hansen
B. F. Lownrbery
C. O. Hesse
Authors AffiliationsC. J. Hansen is Pomologist, University of California, Davis; B. F. Lewisberry is Assistant Nematologist. University of California, Davis; C. O. Hesse is Pomologist, University of California, Davis.
Hilgardia 10(9):5-11. DOI:10.3733/ca.v010n09p5. September 1956.
Two species of gall-forming root-knot nematodes—Meloidogyne incognita var. acrita and M. javanica—seem to be the most widespread of several kinds that parasitize California peaches. Consequently, first efforts toward selection of nematode-resistant rootstocks have been directed against these nematodes.
Also in this issue:Lemon industry in California: Market interactions among fresh lemons and lemon products affect consumer purchase behavior, grower prices, and returns
Declining citrus root systems: Relationship of root systems to top growth and production investigated in citrus orchard rejuvenation program studies
Sodium in lemon tree collapse: Analyses show high sodium concentrations in the roots of collapsing trees are result of tree condition, not the cause
Calico scale on walnuts: Problem of soft scales on walnut increasing but natural enemies still exert suppressing influence on calico scale
Fruit cooling by forced air: Portable unit designed to cool fruit in orchard at harvest reduces usually required 12-hour cooling period to 1 1/2 hours
Control of powder-post beetles: Complete kills of Lyctus beetles infesting hardwood floors achieved in 5–10 minute applications of infrared radiation
Chlorine in plant nutrition: Experiments with plants in nutrient solutions establish chlorine as a micronutrient essential to plant growth
Gains of two types of lambs: Suffolk-Corriedale crosses gained faster and weighed more at weaning than Corriedale crosses during comparative study
Seedling growth on burned soil: Effect of prescribed burning on soil fertility reflected by the growth of pine seedlings in study of nutrient response
Drought-tolerating ornamentals: Natives and introductions from like climates require little water or maintenance and are adaptable to rural landscape
Ornamental flowering plants experimentally infected with curly top
Negative evidence on multiplication of curly-top virus in the beet leafhopper, Eutettix tenellus