March 1969

Cover: A severe bee kill resulted from insecticide applications to a safflower field two miles away during experiments with supplemental feeding of honey bee colonies in a Fresno County alfalfa seed field.

Order issue

California Agriculture, March 1969

Volume 23, Number 3

research articles

Tillage increases plant diseases
by C. E. Yarwood
pp4-6, doi#10.3733/ca.v023n03p4
Summary | Expanded Abstract | PDF

Surfactant longevity and wetting characteristics
by J. F. Osborn , J. Letey , N. Valoras
pp6-8, doi#10.3733/ca.v023n03p6
Summary | Expanded Abstract | PDF

Effects of irrigation, crop density on almond trunk growth
by K. Uriu , P. E. Martin , R. M. Hagan
pp8-11, doi#10.3733/ca.v023n03p8
Summary | Expanded Abstract | PDF

Honey bee pollination of alfalfa seed improved by supplemental feeding
by Bob Sheesley , Bernard Poduska
pp11-13, doi#10.3733/ca.v023n03p11
Summary | Expanded Abstract | PDF

Mechanical harvesting for green asparagus
by R. A. Kepner , R. E. Cowden , G. I. Weigt
pp14-17, doi#10.3733/ca.v023n03p14
Summary | Expanded Abstract | PDF

Wood processing residues —disposal and use in Shasta County
by William A. Dost
pp17-18, doi#10.3733/ca.v023n03p17
Summary | Expanded Abstract | PDF

Plastic shelters for crop growth experiments in the field
by V. H. Schweers , R. M. Davis
pp19, doi#10.3733/ca.v023n03p19
Summary | Expanded Abstract | PDF

editorial, news, letters & science briefs

EDITORIAL: Frustration— agriculture and research
by J. H. Meyer
pp2, doi#10.3733/ca.v023n03p2
PDF

General Information

Environmental toxicology University of California, Davis
Editors
pp3, doi#10.3733/ca.v023n03p3
PDF