California Agriculture, February 1949
Volume 3, Number 2
Beetle colonies for Klamath weed control
Klamath weed beetles: Biological control program now is in the second of three phases
by J. K. Holloway, C. B. Huffaker
Not available – first paragraph follows: Approximately 97% of the 122 colonies of Klamath weed beetles released in 19 counties of the State are considered established.
Avocado root rot studies: Preliminary tests indicate soil fumigation may permit replanting
by George A. Zentmyer, L. J. Klotz
Not available – first paragraph follows: Soil fumigation trials to determine if areas where avocado trees have been removed because of root rot—decline—can be replanted successfully have shown considerable promise.
Citrus seedlings: Influence of fumigation and other treatments of former citrus soils
by James P. Martin
Not available – first paragraph follows: Second or third plantings of young citrus trees in old groves do not grow as well as did those of the original planting or as do plantings of similar young trees on formerly noncitrus soil.
Sugar-beet mosaic tests: Disease may cause considerable reduction in yields of sugar and garden beets grown for seed
by Henry H. P. Severin
Not available – first paragraph follows: Sugar-beet mosaic investigations conducted in California include tests on the host range, symptoms of the disease, properties of the causing virus, and various aspects of transmission by insects— especially aphids.
Packing house sampling: High degree of accuracy possible by use of special machine and calculation
by Roy J. Smith
Not available – first paragraph follows: The use of sampling methods in fruit and vegetable marketing and processing operations to determine the type of product which is received from each grower is becoming a common practice.
Weeds in onions and garlic: Selective sprays effective in control of broadleaf weeds in Imperial Valley field trials
by F. W. Zink
Not available – first paragraph follows: Effective control of broadleaf weeds in onion and garlic fields with cyanate sprays was demonstrated by initial trials in the Imperial Valley last fall.
Onion harvester: New machine digs, lifts, tops and sacks at 1½ miles an hour
by Coby Lorenzen
Not available – first paragraph follows: Important changes have been made toward mechanical harvesting of California speciality crops since World War II. The University's sugar beet harvester, a farmer's almond harvester, a machinist's prune harvester, an engineer's peach harvesting platform—all have contributed to lowering production costs and improving the working conditions of the farm laborer.
Dual purpose safflower seed: Produces drying oil for the paint industry and seed meal for livestock and poultry feed
by P. F. Knowles
Not available – first paragraph follows: Safflower seed oil is a useful type of drying oil and its principal use has been in the paint and varnish industry where it competes directly with linseed oil. Its nonyellowing properties would make it appear to be superior to linseed oil for some interior finishes.
The sour egg problem: Corrective measures now recommended may be modified as studies progress
by F. W. Lorenz, Phoebe Betty Starr
Not available – first paragraph follows: Sour eggs have been found in increasingly large numbers among storage eggs during the past two or three years.
Vitamins for turkeys: Nutritive requirements for adequate rations under continuing study
by F. H. Kratzer
Not available – first paragraph follows: As new vitamins are recognized they are tested with turkeys to determine their place in the feeding program because adequate vitamin intake is particularly essential for poults and breeder hens.
Wool marketing: Problems of tariffs, support prices or subsidies confront growers
by H. R. Wellman