California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Archive

California Agriculture, Vol. 10, No.7

Breeding program for aphid resistant alfalfa
July 1956
Volume 10, Number 7

Research articles

Aphid resistant alfalfa plants: Inexpensive control of spotted alfalfa aphid can be expected as result of plant breeding program to develop new varieties
by Ernest H. Stanford
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A report of progress in the development of alfalfa resistant to the spotted alfalfa aphid conducted in cooperation with the Entomology Research Branch, Agricultural Research Service, U.S.D.A.
A report of progress in the development of alfalfa resistant to the spotted alfalfa aphid conducted in cooperation with the Entomology Research Branch, Agricultural Research Service, U.S.D.A.
Spider mites on walnuts: False spider mite, European red mite, and Pacific spider mite infestations in northern California walnuts during 1955
by A. E. Michelbacher
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The false spicier mite—Brevipalpus lewisi McGregor—first became a potential pest of walnut in the 1955 season although it has been known in California since 1944.
Abstract Not Available – First paragraph follows: The false spicier mite—Brevipalpus lewisi McGregor—first became a potential pest of walnut in the 1955 season although it has been known in California since 1944.
Mapping for orchard appraisal: Supplemental to other systems, survey maps provide complete picture of orchard condition, bearing potential, tree health
by Edward Nauer, Paul Moore
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A system of orchard appraisal mapping successfully used in an extensive survey of California orange orchards records in detail the specific causes of poor tree health and production.
Abstract Not Available – First paragraph follows: A system of orchard appraisal mapping successfully used in an extensive survey of California orange orchards records in detail the specific causes of poor tree health and production.
Effects of air pollutants: Controlled air pollution studies reveal injury to certain important processes of plant life by air-borne toxicants
by Glenn W. Todd, John T. Middleton, Robert F. Brewer
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Symptoms of plant damage in the field can often be identified as the effect of one or more air pollutants. However, the exact mechanisms whereby the plant is damaged and the various manifestations of damage—after fumigation with air toxicants—are not so well known.
Abstract Not Available – First paragraph follows: Symptoms of plant damage in the field can often be identified as the effect of one or more air pollutants. However, the exact mechanisms whereby the plant is damaged and the various manifestations of damage—after fumigation with air toxicants—are not so well known.
Population dynamics of deer: Study of deer herd reveals internal parasites and starvation are most important factors contributing to mortality of deer
by William M. Longhurst
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Natural causes—starvation, accidents, internal parasites, diseases, and predation—accounted for 47% of the losses observed in a population of Columbian black-tailed deer, studied on the Hopland Field Station of the University of California.
Abstract Not Available – First paragraph follows: Natural causes—starvation, accidents, internal parasites, diseases, and predation—accounted for 47% of the losses observed in a population of Columbian black-tailed deer, studied on the Hopland Field Station of the University of California.
Evaluating fly nuisance source: Flies tagged with radioisotopes used as a field test to establish migratory tendencies of a normal fly population
by Arthur H. Smith, Richard M. Bohart
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Radioactive tracers were used in a test at Davis—involving four animal barns— to determine the feasibility of identifying a source of a fly nuisance by means of radioisotopes.
Abstract Not Available – First paragraph follows: Radioactive tracers were used in a test at Davis—involving four animal barns— to determine the feasibility of identifying a source of a fly nuisance by means of radioisotopes.
Pistil abortion of the olive: Experiments with Mission olives indicate loss of leaves may be one cause of poor flower development
by K. Uriv
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Loss of leaves in olive trees decreases the number of perfect flowers and therefore may lower production since imperfect flowers cannot set fruit.
Abstract Not Available – First paragraph follows: Loss of leaves in olive trees decreases the number of perfect flowers and therefore may lower production since imperfect flowers cannot set fruit.
New spinach immune to mildew: Hybrid variety developed by plant breedng program intended for use where Viroflay is adapted, produces comparable yield
by Paul G. Smith, Mike B. Zahara
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Califlay, a new variety of spinach that is completely immune from downy mildew—blue mold—has been planted in most of the spinach-growing areas of the state during the past two years and growth appears to be satisfactory in all areas.
Abstract Not Available – First paragraph follows: Califlay, a new variety of spinach that is completely immune from downy mildew—blue mold—has been planted in most of the spinach-growing areas of the state during the past two years and growth appears to be satisfactory in all areas.
Webmaster Email: wsuckow@ucanr.edu

Thank you for visiting us at California Agriculture. We have created this printable page for you to easily view our website offline. You can visit this page again by pointing your Internet Browser to-

http://calag.ucanr.edu/archive/index.cfm?issue=10_7

California Agriculture, Vol. 10, No.7

Breeding program for aphid resistant alfalfa
July 1956
Volume 10, Number 7

Research articles

Aphid resistant alfalfa plants: Inexpensive control of spotted alfalfa aphid can be expected as result of plant breeding program to develop new varieties
by Ernest H. Stanford
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A report of progress in the development of alfalfa resistant to the spotted alfalfa aphid conducted in cooperation with the Entomology Research Branch, Agricultural Research Service, U.S.D.A.
A report of progress in the development of alfalfa resistant to the spotted alfalfa aphid conducted in cooperation with the Entomology Research Branch, Agricultural Research Service, U.S.D.A.
Spider mites on walnuts: False spider mite, European red mite, and Pacific spider mite infestations in northern California walnuts during 1955
by A. E. Michelbacher
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: The false spicier mite—Brevipalpus lewisi McGregor—first became a potential pest of walnut in the 1955 season although it has been known in California since 1944.
Abstract Not Available – First paragraph follows: The false spicier mite—Brevipalpus lewisi McGregor—first became a potential pest of walnut in the 1955 season although it has been known in California since 1944.
Mapping for orchard appraisal: Supplemental to other systems, survey maps provide complete picture of orchard condition, bearing potential, tree health
by Edward Nauer, Paul Moore
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: A system of orchard appraisal mapping successfully used in an extensive survey of California orange orchards records in detail the specific causes of poor tree health and production.
Abstract Not Available – First paragraph follows: A system of orchard appraisal mapping successfully used in an extensive survey of California orange orchards records in detail the specific causes of poor tree health and production.
Effects of air pollutants: Controlled air pollution studies reveal injury to certain important processes of plant life by air-borne toxicants
by Glenn W. Todd, John T. Middleton, Robert F. Brewer
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Symptoms of plant damage in the field can often be identified as the effect of one or more air pollutants. However, the exact mechanisms whereby the plant is damaged and the various manifestations of damage—after fumigation with air toxicants—are not so well known.
Abstract Not Available – First paragraph follows: Symptoms of plant damage in the field can often be identified as the effect of one or more air pollutants. However, the exact mechanisms whereby the plant is damaged and the various manifestations of damage—after fumigation with air toxicants—are not so well known.
Population dynamics of deer: Study of deer herd reveals internal parasites and starvation are most important factors contributing to mortality of deer
by William M. Longhurst
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Natural causes—starvation, accidents, internal parasites, diseases, and predation—accounted for 47% of the losses observed in a population of Columbian black-tailed deer, studied on the Hopland Field Station of the University of California.
Abstract Not Available – First paragraph follows: Natural causes—starvation, accidents, internal parasites, diseases, and predation—accounted for 47% of the losses observed in a population of Columbian black-tailed deer, studied on the Hopland Field Station of the University of California.
Evaluating fly nuisance source: Flies tagged with radioisotopes used as a field test to establish migratory tendencies of a normal fly population
by Arthur H. Smith, Richard M. Bohart
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Radioactive tracers were used in a test at Davis—involving four animal barns— to determine the feasibility of identifying a source of a fly nuisance by means of radioisotopes.
Abstract Not Available – First paragraph follows: Radioactive tracers were used in a test at Davis—involving four animal barns— to determine the feasibility of identifying a source of a fly nuisance by means of radioisotopes.
Pistil abortion of the olive: Experiments with Mission olives indicate loss of leaves may be one cause of poor flower development
by K. Uriv
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Loss of leaves in olive trees decreases the number of perfect flowers and therefore may lower production since imperfect flowers cannot set fruit.
Abstract Not Available – First paragraph follows: Loss of leaves in olive trees decreases the number of perfect flowers and therefore may lower production since imperfect flowers cannot set fruit.
New spinach immune to mildew: Hybrid variety developed by plant breedng program intended for use where Viroflay is adapted, produces comparable yield
by Paul G. Smith, Mike B. Zahara
| Full text HTML  | PDF  
Summary Not Available – First paragraph follows: Califlay, a new variety of spinach that is completely immune from downy mildew—blue mold—has been planted in most of the spinach-growing areas of the state during the past two years and growth appears to be satisfactory in all areas.
Abstract Not Available – First paragraph follows: Califlay, a new variety of spinach that is completely immune from downy mildew—blue mold—has been planted in most of the spinach-growing areas of the state during the past two years and growth appears to be satisfactory in all areas.

University of California, 1301 S. 46th St., Bldg. 478 Richmond, CA
Email: calag@ucanr.edu | Phone: (510) 665-2163 | Fax: (510) 665-3427
Please visit us again at http://californiaagriculture.ucanr.edu/