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California Agriculture > Volume 6 > Number 4 > 

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April 1952
Volume 6, Number 4
PDF of Issue | View Abstracts

Research articles

Improving prune harvesting: Efficiency and cost compared for various hand and mechanical tree shaking and picking methods
by Louis E. Davis, Richard A. Marks, John H. Kilbuck
| Full text HTML  | PDF  
This is the first of two articles reporting the results of a work simplification study and methods analysis undertaken for California prune growers and dehydrater operators.
This is the first of two articles reporting the results of a work simplification study and methods analysis undertaken for California prune growers and dehydrater operators.
Grape bud mite studies: Seasonal cycle searched for weak point to attack pest assumed to be responsible for abnormal growth
by E. M. Stafford, H. Kido
| Full text HTML  | PDF  
Abnormal vine growth found in certain California vineyards—short basal internodes, zigzagged shoots, witches broom formations, scarification, flattened canes, dead overwintered buds-results in a reduced crop.
Abnormal vine growth found in certain California vineyards—short basal internodes, zigzagged shoots, witches broom formations, scarification, flattened canes, dead overwintered buds-results in a reduced crop.
Brachyrhinus weevils: Spring spray treatment for pest control on nursery grown azaleas, rhododendrons, camellias, heather, other plants
by A. Earl Pritchard
| Full text HTML  | PDF  
Spray applications in early April and early May of some of the newer insecticides may control the damaging Brachyrhinus weevils attacking certain nursery plants in the San Francisco Bay area.
Spray applications in early April and early May of some of the newer insecticides may control the damaging Brachyrhinus weevils attacking certain nursery plants in the San Francisco Bay area.
Walnut aphid investigations: 1951 tests on Payne walnuts help develop economical control program under northern California conditions
by A. E. Michelbacher, O. G. Bacon, William Wade
| Full text HTML  | PDF  
Satisfactory and economical control of the walnut aphid throughout the season is possible.
Satisfactory and economical control of the walnut aphid throughout the season is possible.
Insects on baby lima beans: Control experiment using two applications of 5% DDT dust reduced insect injury and increased total yield
by Woodrow W. Middlekauff
| Full text HTML  | PDF  
One half of one per cent of the baby lima beans from a field dusted with DDT showed insect damage—compared to 12% in the check plot—following a control experiment during the 1951 season.
One half of one per cent of the baby lima beans from a field dusted with DDT showed insect damage—compared to 12% in the check plot—following a control experiment during the 1951 season.
Corn earworm control on sweet corn: DDT leads list of effective of insecticides with methods of application as dusts pray important factors
by L. D. Anderson, O. G. Bacon, J. E. Swift, H. T. Reynolds
| Full text HTML  | PDF  
Effective control of earworms on sweet corn was obtained in extensive experiments during the past five seasons.
Effective control of earworms on sweet corn was obtained in extensive experiments during the past five seasons.
Quick decline studies: Rootstock investigations test various top-root combinations in search of tolerant citrus varieties
by W. P. Bitters, E. R. Parker
| Full text HTML  | PDF  
The second of two articles on quick decline as influenced by top-root relationships
The second of two articles on quick decline as influenced by top-root relationships
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California Agriculture > Volume 6 > Number 4 > 

< Previous issue |   Next issue >

>< Previous issue |   Next issue >

April 1952
Volume 6, Number 4
PDF of Issue | View Abstracts

Research articles

Improving prune harvesting: Efficiency and cost compared for various hand and mechanical tree shaking and picking methods
by Louis E. Davis, Richard A. Marks, John H. Kilbuck
| Full text HTML  | PDF  
This is the first of two articles reporting the results of a work simplification study and methods analysis undertaken for California prune growers and dehydrater operators.
This is the first of two articles reporting the results of a work simplification study and methods analysis undertaken for California prune growers and dehydrater operators.
Grape bud mite studies: Seasonal cycle searched for weak point to attack pest assumed to be responsible for abnormal growth
by E. M. Stafford, H. Kido
| Full text HTML  | PDF  
Abnormal vine growth found in certain California vineyards—short basal internodes, zigzagged shoots, witches broom formations, scarification, flattened canes, dead overwintered buds-results in a reduced crop.
Abnormal vine growth found in certain California vineyards—short basal internodes, zigzagged shoots, witches broom formations, scarification, flattened canes, dead overwintered buds-results in a reduced crop.
Brachyrhinus weevils: Spring spray treatment for pest control on nursery grown azaleas, rhododendrons, camellias, heather, other plants
by A. Earl Pritchard
| Full text HTML  | PDF  
Spray applications in early April and early May of some of the newer insecticides may control the damaging Brachyrhinus weevils attacking certain nursery plants in the San Francisco Bay area.
Spray applications in early April and early May of some of the newer insecticides may control the damaging Brachyrhinus weevils attacking certain nursery plants in the San Francisco Bay area.
Walnut aphid investigations: 1951 tests on Payne walnuts help develop economical control program under northern California conditions
by A. E. Michelbacher, O. G. Bacon, William Wade
| Full text HTML  | PDF  
Satisfactory and economical control of the walnut aphid throughout the season is possible.
Satisfactory and economical control of the walnut aphid throughout the season is possible.
Insects on baby lima beans: Control experiment using two applications of 5% DDT dust reduced insect injury and increased total yield
by Woodrow W. Middlekauff
| Full text HTML  | PDF  
One half of one per cent of the baby lima beans from a field dusted with DDT showed insect damage—compared to 12% in the check plot—following a control experiment during the 1951 season.
One half of one per cent of the baby lima beans from a field dusted with DDT showed insect damage—compared to 12% in the check plot—following a control experiment during the 1951 season.
Corn earworm control on sweet corn: DDT leads list of effective of insecticides with methods of application as dusts pray important factors
by L. D. Anderson, O. G. Bacon, J. E. Swift, H. T. Reynolds
| Full text HTML  | PDF  
Effective control of earworms on sweet corn was obtained in extensive experiments during the past five seasons.
Effective control of earworms on sweet corn was obtained in extensive experiments during the past five seasons.
Quick decline studies: Rootstock investigations test various top-root combinations in search of tolerant citrus varieties
by W. P. Bitters, E. R. Parker
| Full text HTML  | PDF  
The second of two articles on quick decline as influenced by top-root relationships
The second of two articles on quick decline as influenced by top-root relationships

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