October 1969

Cover: Early feeding (2% to 3 weeks ahead of bloom) with a drivert sugar and pollen supplement resulted in a rapid increase in honey bee colony population, and greatly increased pollination of almond blossoms., Heavy pollen collections as shown in inset photo (resulting from supplemental feeding) were from 44 to 97 per cent greater than control colonies.

Order issue

California Agriculture, October 1969

Volume 23, Number 10

research articles

Group-feeding complete rations to lactating dairy cows
by D. A. Toenjes , D. L. Bath , M. Borges
pp4-5, doi#10.3733/ca.v023n10p4
Summary | Expanded Abstract | PDF

Phytotoxicity, and irrigation effects in orchard weed control with herbicides
by A. H. Lange , B. B. Fischer
pp6-8, doi#10.3733/ca.v023n10p6
Summary | Expanded Abstract | PDF

Earlier calves are heavier calves
by W. H. Johnson , J. T. Elings
pp9-10, doi#10.3733/ca.v023n10p9
Summary | Expanded Abstract | PDF

Longidorus africanus merny… nematode found pathogen of imperial lettuce
by J. D. Radewald , J. W. Osgood , K. S. Mayberry , A. O. Paulus , H. W. Otto , F. Shibuya
pp10-13, doi#10.3733/ca.v023n10p10
Summary | Expanded Abstract | PDF

Timing supplemental feeding of honey bees for improved crop pollination
by Bob Sheesley , Bernard Poduska
pp14-15, doi#10.3733/ca.v023n10p14
Summary | Expanded Abstract | PDF

Yuma spider mite on citrus
by H. S. Elmer
pp15-16, doi#10.3733/ca.v023n10p15
Summary | Expanded Abstract | PDF

Chemical pinching for roots of container plants
by James J. Nussbaum
pp16-18, doi#10.3733/ca.v023n10p16
Summary | Expanded Abstract | PDF

A practical aphid trap for field studies
by N. F. Mccalley , W. H. Lange
pp18, doi#10.3733/ca.v023n10p18
Summary | Expanded Abstract | PDF

editorial, news, letters & science briefs

EDITORIAL: What price administrative perfection?
by W. R. Pritchard
pp2, doi#10.3733/ca.v023n10p2
PDF

General Information

Grape field day kearney horticultural field station
Editors
pp3, doi#10.3733/ca.v023n10p3
PDF