California Agriculture, May 1949
Volume 3, Number 5
Control of wireworms in lima beans
Supervised control of insects: Utilizes parasites and predators and makes chemical control more efficient
by Ray F. Smith , Gordon L. Smith
Not available – first paragraph follows: Supervised control of field crop insect pests was first developed on the northwest side of the San Joaquin Valley. For three years it has been in successful operation in connection with the control of the alfalfa caterpillar, and has been expanded to the control of other pests on alfalfa and to pests of cotton. Supervised control has not been developed for such crops as deciduous and citrus fruits or truck crops. It has its possibilities on other crops but the necessary entomological information either has not been developed or has not been tested for a local supervised control district.
Codling moth on apricots: Field investigations of problem started in 1948 are to be continued during current season
by Arthur D. Borden , Harold F. Madsen
Not available – first paragraph follows: Many apricot orchards in the Santa Clara Valley have been severely attacked by the codling moth for a number of years. The losses in wormy fruit at harvest have frequently been as high as 30% to 50% of the crop. The attempts of some growers at control were usually unsatisfactory and at their request the Division of Entomology and Parasitology at Berkeley started a field investigation of the problem in the spring of 1948.
Wireworms in lima beans: Control by seed treatment with high gamma benzene hexachloride-BHC-investigated
by W. H. Lange , E. C. Carlson , L. D. Leach
Not available – first paragraph follows: Wireworms in lima bean fields often cause extensive losses regardless of the amount of seed planted.
Plant breeding: Disease resistant genes of nonagricultural wheat transferred to commercial bread wheat
by R. W. Allard
Not available – first paragraph follows: Plant breeders developing disease resistant plants by using the sciences of genetics and cytology together may obtain genes controlling disease resistance from hybrids between species—if this is necessary.
Black scale control: Supply of natural enemy developed by using pest a s foster host on noneconomic plants
by Stanley E. Flanders
Not available – first paragraph follows: Oleanders planted along the side of a citrus orchard—toward the prevailing midday winds—can serve as insectaries for the production of the African parasite, Metaphycus helvolus, a natural enemy of black scale introduced into California in 1937 by the University of California.
Acidification of California soils: Many pumped irrigation waters of State require large additions of acid to add appreciable amount to soil
by L. D. Doneen
Not available – first paragraph follows: Making soil acid—acidification—by adding acid to the irrigation water has been advocated as a means of controlling potato scab; for neutralizing highly alkaline soils; the reclamation of saline soils; and the improvement of penetrability of water into the soil.
Table grape quality factors: Causes of late maturing in 1946-47 and suggested procedure to improve quality in 1949
by A. J. Winkler
Not available – first paragraph follows: Within the limit of a grape vine's capacity to bear fruit, the date of ripening is determined mainly by heat and can not be hastened by a reduction in crop.
Chickens in hot weather: Effects of high air temperatures and methods of cooling poultry houses under study
by Wilbor O. Wilson
The experiments with evaporative coolers were conducted by Professor V. S. Asmundson of Poultry Husbandry, Davis, and J. R. Taver- netti, Associate Agricultural Engineer in the Experiment Station, Davis.
Canning tomatoes: Color measurement as an aid in grading tomatoes to specifications
by John H. MacGillivray
Not available – first paragraph follows: Color is an important quality characteristic of canning tomatoes.
Irrigated pasture costs: Studies revealed costs per animal-unit month varied from $1.00 to over $7.00
by B. B. Burlingame
Not available – first paragraph follows: Recent irrigated pasture cost studies conducted in Butte, Colusa, Sacramento, San Joaquin, and Yolo counties revealed wide variations.
Breeding of mares: Management and accurate records may increase percentage of live foals
by Perry T. Cupps
Not available – first paragraph follows: Breeders of horses often are disappointed at the small percentage of live foals they obtain from breeding mares.
Fruit prices: Returns to growers influence business conditions in many California communities
by S. W. Shear