The value of international scientific exchange

Also in this issue:

Biology and physical ecology of Apanteles subandinus Blanchard (Hymenoptera: Braconidae), with notes on temperature responses of Apanteles scutellaris Muesebeck and its host, the potato tuberworm

Regenerating native oaks in California

Drainage reduction potential of furrow irrigation

Biological control of black scale in olives

Garlic weed competition

Glyphosate doesn't harm tall fescue

Twig blight of oaks in California

Selecting for insecticide resistance in a California red scale parasitoid

Effects of tax reform on beef cattle operations

Controlling seepage from evaporation ponds

Barley yellow dwarf of California cereals

The crisis in agricultural education

Heat stress and copper supplementation in pigs

The farmers of farmers' markets

Sprinkler spacing affects almond frost protection