Research previews

Also in this issue:

Germination of Russian thistle seeds

Seed contamination in transmission of halo blight in beans

Inducing abscission of olive fruits by spraying with ascorbic acid and iodoacetic acid

Chemical identification of pear species used as rootstocks

Diagnoses of pear decline and rootstock identification in young pear orchards

Light traps as detection devices for moths of cabbage looper and bollworm

Dual-use return-water irrigation system

Effects of 2,4-D and related substances on fruit-drop, yield, size, and quality of Washington Navel oranges