B. Fischer, Monterey and Fresno counties
F. Ashton, Department of Agricultural Botany, University of California, Davis
A. Lange, San Joaquin Valley Agricultural Research and Extension Center
E. Stilwell, University of California, Riverside
R. Brendler
H. Kempen
V. Schweers
H. Collins
R. King
L. Buschmann
J. Orr
H. Agamalian Farm Advisors in Monterey and Fresno counties; B. Fischer Farm Advisors in Monterey and Fresno counties; F. Ashton is Professor, Department of Agricultural Botany, University of California, Davis; A. Lange is Extension Weed Control Specialist, San Joaquin Valley Agricultural Research and Extension Center; E. Stil-well was formerly Specialist, University of California, Riverside; R. Brendler Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; H. Kempen Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; V. Schweers Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; H. Collins Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; R. King Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; L. Buschmann Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; J. Orr Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties;
Abstract
The development of selective herbicides has been basic to the profitable use of the
mechanical tomato harvester. Weeds must be efficiently controlled if such machines
are to operate effectively in California tomato fields. About 40% of California's
tomatoes were treated with herbicides for annual preemergence weed control in 1965.
Only five years later over twice this acreage was treated (87% in a 1970 survey).
The most common weeds in tomato fields include barnyard grass, pigweed, nightshade,
nutsedge, shepherd's purse, and many other broadleaf weeds and grasses.
R. Brendler, H. Kempen, V. Schweers, H. Collins, R. King, L. Buschmann, and J. Orr
are Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento
counties, respectively. Support was provided by the Stauffer Chemical Company, Eli
Lilly Chemical Company, the Shell Development Company, and Upjohn Chemical Company.
The staff of the West Side Field Station and the Moreno Field Station and cooperating
tomato growers in several counties assisted in this study.
Agamalian H, Fischer B, Ashton F, Lange A, Stilwell E, Brendler R, Kempen H, Schweers V, Collins H, King R, Buschmann L, Orr J. 1972. Weed control studies in tomatoes, 1968–70.
Calif Agr 26(1):10-11.
B. Fischer, Monterey and Fresno counties
F. Ashton, Department of Agricultural Botany, University of California, Davis
A. Lange, San Joaquin Valley Agricultural Research and Extension Center
E. Stilwell, University of California, Riverside
R. Brendler
H. Kempen
V. Schweers
H. Collins
R. King
L. Buschmann
J. Orr
H. Agamalian Farm Advisors in Monterey and Fresno counties; B. Fischer Farm Advisors in Monterey and Fresno counties; F. Ashton is Professor, Department of Agricultural Botany, University of California, Davis; A. Lange is Extension Weed Control Specialist, San Joaquin Valley Agricultural Research and Extension Center; E. Stil-well was formerly Specialist, University of California, Riverside; R. Brendler Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; H. Kempen Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; V. Schweers Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; H. Collins Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; R. King Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; L. Buschmann Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties; J. Orr Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento counties;
Abstract
The development of selective herbicides has been basic to the profitable use of the
mechanical tomato harvester. Weeds must be efficiently controlled if such machines
are to operate effectively in California tomato fields. About 40% of California's
tomatoes were treated with herbicides for annual preemergence weed control in 1965.
Only five years later over twice this acreage was treated (87% in a 1970 survey).
The most common weeds in tomato fields include barnyard grass, pigweed, nightshade,
nutsedge, shepherd's purse, and many other broadleaf weeds and grasses.
R. Brendler, H. Kempen, V. Schweers, H. Collins, R. King, L. Buschmann, and J. Orr
are Farm Advisors in Ventura, Kern, Tulare, San Benito, San Joaquin, Sutter, and Sacramento
counties, respectively. Support was provided by the Stauffer Chemical Company, Eli
Lilly Chemical Company, the Shell Development Company, and Upjohn Chemical Company.
The staff of the West Side Field Station and the Moreno Field Station and cooperating
tomato growers in several counties assisted in this study.
Agamalian H, Fischer B, Ashton F, Lange A, Stilwell E, Brendler R, Kempen H, Schweers V, Collins H, King R, Buschmann L, Orr J. 1972. Weed control studies in tomatoes, 1968–70.
Calif Agr 26(1):10-11.
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