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California Agriculture
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California Agriculture, Vol. 13, No.4

Control of aster yellows in celery
April 1959
Volume 13, Number 4

Research articles

Commercial cut flower industry: Further production increases without substantial increase in acreage may cause changes in successful marketing practices
by D. B. DeLoach
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Beginning a two-part article based on an analysis of the growth potential of the commercial cut flower industry.
Beginning a two-part article based on an analysis of the growth potential of the commercial cut flower industry.
Gibberellins on chrysanthemum: Properly timed applications of potassium gibberellate sprays improved flower shape of two commercial varieties of pompon
by Peter J. Lert
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Significantly longer flower stalks, increased flower spray diameters, and the elimination of clustering of pompon chrysanthemum – varieties Shibuya White and Schneeberg's Yellow Daisy– were obtained in experiments with potassium gibberellate.
Abstract Not Available – First paragraph follows: Significantly longer flower stalks, increased flower spray diameters, and the elimination of clustering of pompon chrysanthemum – varieties Shibuya White and Schneeberg's Yellow Daisy– were obtained in experiments with potassium gibberellate.
Aster yellows virus in celery: Spray treatment of natural breeding area of aster leafhopper controls spread of important virus disease to celery fields
by J. H. Freitag, T. M. Aldrich, R. M. Drake
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Annual losses as high as 30% –caused by aster yellows virus–have been cut to 5% by growers of the Arroyo Grande Valley of San Luis Obispo County who annually produce about 1,200 acres of celery valued at approximately $2.-500,000.
Abstract Not Available – First paragraph follows: Annual losses as high as 30% –caused by aster yellows virus–have been cut to 5% by growers of the Arroyo Grande Valley of San Luis Obispo County who annually produce about 1,200 acres of celery valued at approximately $2.-500,000.
Summer-planted solana berries: Tests in southern California and also at Davis show early summer plantings of new strawberry yield with variety Lassen
by R. S. Bringhurst, Victor Voth
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Fruit of the new Solana variety strawberry–released in January, 1958–is of high quality, but yields the first production year following winter planting in southern California were much less than yields of the Lassen variety. However, Solana yields the second harvest year compared more favorably with Lassen.
Abstract Not Available – First paragraph follows: Fruit of the new Solana variety strawberry–released in January, 1958–is of high quality, but yields the first production year following winter planting in southern California were much less than yields of the Lassen variety. However, Solana yields the second harvest year compared more favorably with Lassen.
Herbicides on rangeland forage: Reduction of plant competition during seedling establishment on annual ranges by application of pre-emergence herbicides
by Cyrus M. McKell, Burgess L. Kay, Jack Major
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Excessive competition from resident annual grasses and forbs–for moisture and nutrients–is one of the primary problems in establishing improved forage species on annual ranges.
Abstract Not Available – First paragraph follows: Excessive competition from resident annual grasses and forbs–for moisture and nutrients–is one of the primary problems in establishing improved forage species on annual ranges.
Herbicides on white potatoes: Weed control field trials with seven herbicides conducted in San Bernardino County with varying results in effectiveness
by D. C. Purnell, C. D. McCarty, T. M. Little
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Designed to observe the tolerance of white potatoes for herbicides applied for weed control, a series of trials was conducted in commercial fields.
Abstract Not Available – First paragraph follows: Designed to observe the tolerance of white potatoes for herbicides applied for weed control, a series of trials was conducted in commercial fields.
Codling moth investigations: Severe infestations in northern California walnut orchards in 1958 followed conditions favorable to the second brood
by A. E. Michelbacher, C. Q. Gonzales
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The attack on walnuts by the first brood of codling moth in 1958 was light but favorable environmental conditions during the development of the second brood resulted in a marked upward surge in the number of nuts infested by harvest time.
Abstract Not Available – First paragraph follows: The attack on walnuts by the first brood of codling moth in 1958 was light but favorable environmental conditions during the development of the second brood resulted in a marked upward surge in the number of nuts infested by harvest time.
Parathion resistant mites: Performance of new acaricides evaluated in trials against strain of mites known to be resistant to phosphate compounds
by Harold F. Madsen, J. Blair Bailey
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Resistance of European red mite– Panonychus ulmi(Koch)–to phosphate compounds is becoming widespread in the pear and apple growing districts of California.
Abstract Not Available – First paragraph follows: Resistance of European red mite– Panonychus ulmi(Koch)–to phosphate compounds is becoming widespread in the pear and apple growing districts of California.
Poultry house cleanout machine: Manure pickup device designed for use in obstruction-free area under strings of poultry cages shows high efficiency
by Samuel A. Hart, I. J. Szluka, G. R. Giannini
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A self-propelled machine–capable of picking up 0.5 cubic yard of poultry manure in 3-4 minutes–has been developed for use in poultry houses where individual and colony cages confine laying chickens. The cages have wire tops, walls, and floors. The wire floor–usually of welded wire of l"x2" mesh spacing– is about 3' above ground level. Eggs are caught on the wire floor and roll to the egg tray at the front of the cage. Defecation passes through the wire mesh and accumulates in a windrow on the ground. This accumulated manure is a serious sanitation problem, as it is a good breeding medium for the common housefly.
Abstract Not Available – First paragraph follows: A self-propelled machine–capable of picking up 0.5 cubic yard of poultry manure in 3-4 minutes–has been developed for use in poultry houses where individual and colony cages confine laying chickens. The cages have wire tops, walls, and floors. The wire floor–usually of welded wire of l"x2" mesh spacing– is about 3' above ground level. Eggs are caught on the wire floor and roll to the egg tray at the front of the cage. Defecation passes through the wire mesh and accumulates in a windrow on the ground. This accumulated manure is a serious sanitation problem, as it is a good breeding medium for the common housefly.
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California Agriculture, Vol. 13, No.4

Control of aster yellows in celery
April 1959
Volume 13, Number 4

Research articles

Commercial cut flower industry: Further production increases without substantial increase in acreage may cause changes in successful marketing practices
by D. B. DeLoach
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Beginning a two-part article based on an analysis of the growth potential of the commercial cut flower industry.
Beginning a two-part article based on an analysis of the growth potential of the commercial cut flower industry.
Gibberellins on chrysanthemum: Properly timed applications of potassium gibberellate sprays improved flower shape of two commercial varieties of pompon
by Peter J. Lert
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Significantly longer flower stalks, increased flower spray diameters, and the elimination of clustering of pompon chrysanthemum – varieties Shibuya White and Schneeberg's Yellow Daisy– were obtained in experiments with potassium gibberellate.
Abstract Not Available – First paragraph follows: Significantly longer flower stalks, increased flower spray diameters, and the elimination of clustering of pompon chrysanthemum – varieties Shibuya White and Schneeberg's Yellow Daisy– were obtained in experiments with potassium gibberellate.
Aster yellows virus in celery: Spray treatment of natural breeding area of aster leafhopper controls spread of important virus disease to celery fields
by J. H. Freitag, T. M. Aldrich, R. M. Drake
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Annual losses as high as 30% –caused by aster yellows virus–have been cut to 5% by growers of the Arroyo Grande Valley of San Luis Obispo County who annually produce about 1,200 acres of celery valued at approximately $2.-500,000.
Abstract Not Available – First paragraph follows: Annual losses as high as 30% –caused by aster yellows virus–have been cut to 5% by growers of the Arroyo Grande Valley of San Luis Obispo County who annually produce about 1,200 acres of celery valued at approximately $2.-500,000.
Summer-planted solana berries: Tests in southern California and also at Davis show early summer plantings of new strawberry yield with variety Lassen
by R. S. Bringhurst, Victor Voth
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Fruit of the new Solana variety strawberry–released in January, 1958–is of high quality, but yields the first production year following winter planting in southern California were much less than yields of the Lassen variety. However, Solana yields the second harvest year compared more favorably with Lassen.
Abstract Not Available – First paragraph follows: Fruit of the new Solana variety strawberry–released in January, 1958–is of high quality, but yields the first production year following winter planting in southern California were much less than yields of the Lassen variety. However, Solana yields the second harvest year compared more favorably with Lassen.
Herbicides on rangeland forage: Reduction of plant competition during seedling establishment on annual ranges by application of pre-emergence herbicides
by Cyrus M. McKell, Burgess L. Kay, Jack Major
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Excessive competition from resident annual grasses and forbs–for moisture and nutrients–is one of the primary problems in establishing improved forage species on annual ranges.
Abstract Not Available – First paragraph follows: Excessive competition from resident annual grasses and forbs–for moisture and nutrients–is one of the primary problems in establishing improved forage species on annual ranges.
Herbicides on white potatoes: Weed control field trials with seven herbicides conducted in San Bernardino County with varying results in effectiveness
by D. C. Purnell, C. D. McCarty, T. M. Little
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Designed to observe the tolerance of white potatoes for herbicides applied for weed control, a series of trials was conducted in commercial fields.
Abstract Not Available – First paragraph follows: Designed to observe the tolerance of white potatoes for herbicides applied for weed control, a series of trials was conducted in commercial fields.
Codling moth investigations: Severe infestations in northern California walnut orchards in 1958 followed conditions favorable to the second brood
by A. E. Michelbacher, C. Q. Gonzales
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The attack on walnuts by the first brood of codling moth in 1958 was light but favorable environmental conditions during the development of the second brood resulted in a marked upward surge in the number of nuts infested by harvest time.
Abstract Not Available – First paragraph follows: The attack on walnuts by the first brood of codling moth in 1958 was light but favorable environmental conditions during the development of the second brood resulted in a marked upward surge in the number of nuts infested by harvest time.
Parathion resistant mites: Performance of new acaricides evaluated in trials against strain of mites known to be resistant to phosphate compounds
by Harold F. Madsen, J. Blair Bailey
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Resistance of European red mite– Panonychus ulmi(Koch)–to phosphate compounds is becoming widespread in the pear and apple growing districts of California.
Abstract Not Available – First paragraph follows: Resistance of European red mite– Panonychus ulmi(Koch)–to phosphate compounds is becoming widespread in the pear and apple growing districts of California.
Poultry house cleanout machine: Manure pickup device designed for use in obstruction-free area under strings of poultry cages shows high efficiency
by Samuel A. Hart, I. J. Szluka, G. R. Giannini
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A self-propelled machine–capable of picking up 0.5 cubic yard of poultry manure in 3-4 minutes–has been developed for use in poultry houses where individual and colony cages confine laying chickens. The cages have wire tops, walls, and floors. The wire floor–usually of welded wire of l"x2" mesh spacing– is about 3' above ground level. Eggs are caught on the wire floor and roll to the egg tray at the front of the cage. Defecation passes through the wire mesh and accumulates in a windrow on the ground. This accumulated manure is a serious sanitation problem, as it is a good breeding medium for the common housefly.
Abstract Not Available – First paragraph follows: A self-propelled machine–capable of picking up 0.5 cubic yard of poultry manure in 3-4 minutes–has been developed for use in poultry houses where individual and colony cages confine laying chickens. The cages have wire tops, walls, and floors. The wire floor–usually of welded wire of l"x2" mesh spacing– is about 3' above ground level. Eggs are caught on the wire floor and roll to the egg tray at the front of the cage. Defecation passes through the wire mesh and accumulates in a windrow on the ground. This accumulated manure is a serious sanitation problem, as it is a good breeding medium for the common housefly.

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