Trifoliate orange seedlings: Effect of various soil chemical properties on growth of trifoliate orange seedlings in sandy and in loam soils
AuthorsJ. P. Martin
W. P. Bitters
J. O. Ervin
Authors AffiliationsJ. P. Martin is Chemist in Soils and Plant Nutrition, University of California, Riverside; W. P. Bitters is Associate Horticulturist, University of California, Riverside; J. O. Ervin is Laboratory Technician in Soils and Plant Nutrition, University of California, Riverside.
Hilgardia 10(3):15-15. DOI:10.3733/ca.v010n03p15. March 1956.
Orange trees on trifoliate orange root-stock have certain desirable characteristics—smaller trees that yield well in proportion to their size; fruit of better than average quality and size; generally early fruit maturity; tolerance to quick decline; and more cold resistance than other combinations—and the trifoliate root itself is relatively resistant to gummosis and to nematodes. Because of these characteristics, the trifoliate orange is sometimes selected by growers as a root-stock for oranges.
Also in this issue:California swine industry: Transportation costs, price differentials, alternative farm enterprises, among factors affecting state's swine industry
New air powered hand duster: Use of compressed air to fluidize dusts permits treatment of 7,000 square-foot-capacity glasshouse in less than half hour
Aphid damage to alfalfa hay: Honeydew of spotted alfalfa aphid apparently not distasteful to cattle but protein and carotene in damaged hay are reduced
Woolly apple aphid control: Upward and downward migration of aphid throughout trees reduced in preliminary experiments with chemical compounds
Control of cyclamen mite: Stocking test plots in new fields with natural enemies has given biological control on strawberries in first crop year
Control of walnut blight: Antibiotic and copper formulations tested in modified spray program in experimental plots in Sun Joaquin County
Walnut aphid studies in 1955: Experimental systemic aphicide OMPA has outstanding promise but more studies needed before release for commercial use
New roots on pine seedlings: Greenhouse tests with ponderosa pine seedlings indicate time of transplanting affects rooting ability of seedling
Sodium-calcium in young citrus: Ratio of sodium to calcium in the nutrient solution of sand cultures shown to affect mineral absorption and plant growth
The cyclamen mite, Tarsonemus pallidus, and its control on field strawberries