Organic chemicals on citrus: Stimulation of tree growth resulted from addition of certain pure compounds to nutrient cultures in glasshouse studies
AuthorsJoseph N. Brusca
A. R. C. Haas
Authors AffiliationsJoseph N. Brusca is Principal Laboratory Technician in Plant Biochemistry, University of California, Riverside; A. R. C. Haas is Plant Physiologist, Emeritus, University of California, Riverside.
Hilgardia 11(11):4-4. DOI:10.3733/ca.v011n11p4. November 1957.
Organic manures or cover crops in southern California citrus orchards have—to a large extent—been abandoned. Scarcity, increased costs, rapid disappearance of organic matter in many soils, and a lack of strong evidence as to its actual benefit to the tree, are among the factors that have limited their use.
Also in this issue:Trends in citrus marketing: Differential trends in production and utilization of citrus predominantly tied to the industry's fresh-shipping market
Rapid pack system for oranges: Designed for lemon packing and adapted for oranges, method is essentially a result of long term motion and time analyses
High and low budding of citrus: Malformation of bud union of citrus trees on Sampson tangelo, and Cleopatra mandarin stock seems related to budding height
Grocery stores in California: Analytical study of representative retail grocery stores made to determine factors affecting store characteristics
Natural food flavor intensity: Apricot, peach, and pear nectars studied to determine the sweetness-acid-flavor relationship in a natural food product
Spider mite on walnuts: Promising results obtained with three miticides tested in control experiments in infested walnut orchard at San Jose
Use of geese for grass control: Amount of grass, available water, field size, type of crop, among factors affecting use of naturally selective weeders
Sewage sludges for agriculture: Production of high value specialty crops, nursery stock and similar crops possible disposal outlet for treated sewage
Labor field-transit machines: Planting, thinning, weeding, other hand operations in some row crops facilitated by within-field transportation for labor
Host-determined morphological variations in Lecanium corni
The orange tortrix, Argyrotaenia citrana