California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Archive

May-June 1982
Volume 36, Number 5

Peer-reviewed research and review articles

New wasp may help control navel orangeworm
by E. Fred Legner, Gordon Gordh, Aquiles Silveira-Guido, Max E. Badgley
| Full text HTML  | PDF  
A tiny parasitic wasp imported from South America shows potential for economic control of this important pest of almonds. (Photo by Max E. Badgley)
Discovered in South America, the wasp attacks navel orangeworm larvae in hullsplit and mummy almonds.
Midwinter irrigation can reduce deep bark canker of walnuts
by Beth L. Teviotdale, G. Steven Sibbett
| Full text HTML  | PDF  
Supplementing low rainfall with midwinter irrigation dramatically reduced deep bark canker.
Cabbage aphid control on Brussels sprouts and broccoli
by Norman F. McCalley
| Full text HTML  | PDF  
An experimental insecticide gave the best control in Salinas Valley Brussels sprouts and broccoli.
A master plan for drainage in the San Joaquin Valley
by Blaine R. Hanson
| Full text HTML  | PDF  
Solution of subsurface drainage problems in the heavily irrigated valley is complex but vital if the cropland is to remain productive.
About 400,000 acres of irrigated land now have drainage problems, and affected acreage is increasing.
Nutritive value of chaparral for goats grazing in fuel-breaks
by Ahmed E. Sidahmed, Steven R. Radosevich, James G. Morris, Ling J. Koong
| Full text HTML  | PDF  
Goats, used for fuel-break maintenance in chaparral, browsed scrub oak most and manzanita least, choosing the most nutritive plant parts.
Spanish goats, used for fuel-break maintenance in chaparral after fire, browsed resprouting vegetation, selecting most nutritive plant parts. Goat with harness (right) is one of esophageal fistulated animals from which samples were collected daily. At far right is resprouting scrub oak and chamise at U.S. Hopland Field Station, Mendocino County; below, goats in test plot at Tragedy Springs, Cleveland National Forest, San Diego County.
Chemicals losing effect against grape mealybug
by Donald L. Flaherty, William L. Peacock, Larry Bettiga, George M. Leavitt
| Full text HTML  | PDF  
Field tests verified reports of problems in achieving satisfactory control of mealybug with chemicals.
Polyethylene tarping controls verticillium wilt in pistachios
by Lee J. Ashworth, David P. Morgan, Santiago A. Gaona, Arthur H. McCain
| Full text HTML  | PDF  
Polyethylene tarping applied to pistachio groves in summer is expensive but practical, killing the wilt fungus to a 4-fOOt depth.
Trees as energy crops
by Richard B. Standiford, Dean R. Donaldson
| Full text HTML  | PDF  
Field-tested as energy crops in Napa County, two eucalyptus species produced an estimated 25 to 32 million Btu per acre per year.
Walnut aphid becoming a costly midsummer pest
by G. Steven Sibbett, Larry Bettiga, Marion Bailey
| Full text HTML  | PDF  
Usually considered a cool-weather pest, walnut aphids can also be an economic hazard when it's hot.
Controls for codling moth suppress aphid parasite, allowing undisturbed population growth.
Radioactive measurement of brown mite injury on avocados
by Frank V. Sances, Nick C. Toscano, Michael P. Hoffmann, Larry F. LaPr, Marshall W. Johnson, J. Blair Bailey
| Full text HTML  | PDF  
Dual-isotope porometer correlates mite feeding with reduced transpiration and photosynthesis rates.

News and opinion

Hard timeshard decisions
by J. B. Kendrick
Full text HTML  | PDF  
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May-June 1982
Volume 36, Number 5

Peer-reviewed research and review articles

New wasp may help control navel orangeworm
by E. Fred Legner, Gordon Gordh, Aquiles Silveira-Guido, Max E. Badgley
| Full text HTML  | PDF  
A tiny parasitic wasp imported from South America shows potential for economic control of this important pest of almonds. (Photo by Max E. Badgley)
Discovered in South America, the wasp attacks navel orangeworm larvae in hullsplit and mummy almonds.
Midwinter irrigation can reduce deep bark canker of walnuts
by Beth L. Teviotdale, G. Steven Sibbett
| Full text HTML  | PDF  
Supplementing low rainfall with midwinter irrigation dramatically reduced deep bark canker.
Cabbage aphid control on Brussels sprouts and broccoli
by Norman F. McCalley
| Full text HTML  | PDF  
An experimental insecticide gave the best control in Salinas Valley Brussels sprouts and broccoli.
A master plan for drainage in the San Joaquin Valley
by Blaine R. Hanson
| Full text HTML  | PDF  
Solution of subsurface drainage problems in the heavily irrigated valley is complex but vital if the cropland is to remain productive.
About 400,000 acres of irrigated land now have drainage problems, and affected acreage is increasing.
Nutritive value of chaparral for goats grazing in fuel-breaks
by Ahmed E. Sidahmed, Steven R. Radosevich, James G. Morris, Ling J. Koong
| Full text HTML  | PDF  
Goats, used for fuel-break maintenance in chaparral, browsed scrub oak most and manzanita least, choosing the most nutritive plant parts.
Spanish goats, used for fuel-break maintenance in chaparral after fire, browsed resprouting vegetation, selecting most nutritive plant parts. Goat with harness (right) is one of esophageal fistulated animals from which samples were collected daily. At far right is resprouting scrub oak and chamise at U.S. Hopland Field Station, Mendocino County; below, goats in test plot at Tragedy Springs, Cleveland National Forest, San Diego County.
Chemicals losing effect against grape mealybug
by Donald L. Flaherty, William L. Peacock, Larry Bettiga, George M. Leavitt
| Full text HTML  | PDF  
Field tests verified reports of problems in achieving satisfactory control of mealybug with chemicals.
Polyethylene tarping controls verticillium wilt in pistachios
by Lee J. Ashworth, David P. Morgan, Santiago A. Gaona, Arthur H. McCain
| Full text HTML  | PDF  
Polyethylene tarping applied to pistachio groves in summer is expensive but practical, killing the wilt fungus to a 4-fOOt depth.
Trees as energy crops
by Richard B. Standiford, Dean R. Donaldson
| Full text HTML  | PDF  
Field-tested as energy crops in Napa County, two eucalyptus species produced an estimated 25 to 32 million Btu per acre per year.
Walnut aphid becoming a costly midsummer pest
by G. Steven Sibbett, Larry Bettiga, Marion Bailey
| Full text HTML  | PDF  
Usually considered a cool-weather pest, walnut aphids can also be an economic hazard when it's hot.
Controls for codling moth suppress aphid parasite, allowing undisturbed population growth.
Radioactive measurement of brown mite injury on avocados
by Frank V. Sances, Nick C. Toscano, Michael P. Hoffmann, Larry F. LaPr, Marshall W. Johnson, J. Blair Bailey
| Full text HTML  | PDF  
Dual-isotope porometer correlates mite feeding with reduced transpiration and photosynthesis rates.

News and opinion

Hard timeshard decisions
by J. B. Kendrick
Full text HTML  | PDF  

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