California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Archive

August-September 1980
Volume 34, Number 8

Peer-reviewed research and review articles

California conifers thrive in New Zealand
by Paul C. Smith
| Full text HTML  | PDF  
New Zealand foresters have turned to California species, particularly the Monterey pine, to reforest large areas for timber production, erosion control, and “agro-forestry.”
A new approach to thinning olives
by George C. Martin, Shimon Lavee, G. Steven Sibbett, Chic Nishijima, Stephen P. Carlson
| Full text HTML  | PDF  
Applying NAA to olive trees about two weeks after full bloom proved easier and more reliable than timing thinning sprays by fruit size alone. The key is recognizing full bloom.
Illegal Mexican workers: Why they come
by Refugio I. Rochin, Carole Frank Nuckton
| Full text HTML  | PDF  
Three theories are offered for illegal immigration-unemployment at home combined with demand for cheap labor here; ease of migration; and rapid assimilation into U. S. society.
Damsel bugs useful as predators but need help
by John H. Benedict, Warren R. Cothran
| Full text HTML  | PDF  
Damsel bugs consume large numbers of insect pests in hay alfalfa in the Sacramento Valley but need the help of other beneficial insects to provide effective control. Border or strip cutting is recommended.
California sugarbeet growers respond quickly to price
by Henry N. Wallace, Hoy F. Carman
| Full text HTML  | PDF  
California sugarbeet production, down sharply in recent years, will decline further if prices of alternative crops increase relative to sugar prices, according to this study.
Vetch is an economical source of nitrogen in rice
by William A. Williams, Jean H. Dawson
| Full text HTML  | PDF  
Vetch planted into maturing rice for green manure can supply 30 to 60 pounds per acre of that crop's nitrogen.
Biological control of brownbanded cockroaches
by Arthur J. Slater, Margaret J. Hurlbert, Vernard R. Lewis
| Full text HTML  | PDF  
A parasitic wasp has been the major means of suppressing brown-banded cockroaches in large research buildings in Berkeley.
Short-rotation eucalyptus as a biomass fuel
by Roy M. Sachs, David W. Gilpin, Tom Mock
| Full text HTML  | PDF  
Rapidly resprouting eucalyptus, harvested twice annually, produced fuel for downdraft gasifiers at lower cost than is possible with most annual crops. Yields were up to 22 tonnes per hectare per year.
Geologic nitrogen in soils may pose hazard
by Scott M. Strathouse, Garrison Sposito
| Full text HTML  | PDF  
Many western San Joaquin Valley basins contain naturally high-nitrate soils that may cause problems, especially when used for irrigated agriculture when nitrogen fertilizer is added.
New “glance” technique measures dairy efficiency
by Robert O. Leonard, Timothy McVeagh
| Full text HTML  | PDF  
A new “glance” technique permits one person to spot-check several milkers and cow-flow patterns at once, providing data that may help improve milking parlor design and worker training.

Editorial, News, Letters and Science Briefs

The need for expanded agricultural communication
by J. B. Kendrick
Full text HTML  | PDF  
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August-September 1980
Volume 34, Number 8

Peer-reviewed research and review articles

California conifers thrive in New Zealand
by Paul C. Smith
| Full text HTML  | PDF  
New Zealand foresters have turned to California species, particularly the Monterey pine, to reforest large areas for timber production, erosion control, and “agro-forestry.”
A new approach to thinning olives
by George C. Martin, Shimon Lavee, G. Steven Sibbett, Chic Nishijima, Stephen P. Carlson
| Full text HTML  | PDF  
Applying NAA to olive trees about two weeks after full bloom proved easier and more reliable than timing thinning sprays by fruit size alone. The key is recognizing full bloom.
Illegal Mexican workers: Why they come
by Refugio I. Rochin, Carole Frank Nuckton
| Full text HTML  | PDF  
Three theories are offered for illegal immigration-unemployment at home combined with demand for cheap labor here; ease of migration; and rapid assimilation into U. S. society.
Damsel bugs useful as predators but need help
by John H. Benedict, Warren R. Cothran
| Full text HTML  | PDF  
Damsel bugs consume large numbers of insect pests in hay alfalfa in the Sacramento Valley but need the help of other beneficial insects to provide effective control. Border or strip cutting is recommended.
California sugarbeet growers respond quickly to price
by Henry N. Wallace, Hoy F. Carman
| Full text HTML  | PDF  
California sugarbeet production, down sharply in recent years, will decline further if prices of alternative crops increase relative to sugar prices, according to this study.
Vetch is an economical source of nitrogen in rice
by William A. Williams, Jean H. Dawson
| Full text HTML  | PDF  
Vetch planted into maturing rice for green manure can supply 30 to 60 pounds per acre of that crop's nitrogen.
Biological control of brownbanded cockroaches
by Arthur J. Slater, Margaret J. Hurlbert, Vernard R. Lewis
| Full text HTML  | PDF  
A parasitic wasp has been the major means of suppressing brown-banded cockroaches in large research buildings in Berkeley.
Short-rotation eucalyptus as a biomass fuel
by Roy M. Sachs, David W. Gilpin, Tom Mock
| Full text HTML  | PDF  
Rapidly resprouting eucalyptus, harvested twice annually, produced fuel for downdraft gasifiers at lower cost than is possible with most annual crops. Yields were up to 22 tonnes per hectare per year.
Geologic nitrogen in soils may pose hazard
by Scott M. Strathouse, Garrison Sposito
| Full text HTML  | PDF  
Many western San Joaquin Valley basins contain naturally high-nitrate soils that may cause problems, especially when used for irrigated agriculture when nitrogen fertilizer is added.
New “glance” technique measures dairy efficiency
by Robert O. Leonard, Timothy McVeagh
| Full text HTML  | PDF  
A new “glance” technique permits one person to spot-check several milkers and cow-flow patterns at once, providing data that may help improve milking parlor design and worker training.

Editorial, News, Letters and Science Briefs

The need for expanded agricultural communication
by J. B. Kendrick
Full text HTML  | PDF  

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