Copper in embryonic development

Also in this issue:

Irrigation pumping plant characteristics in the San Joaquin Valley

Gibberellins on grape

Suffolk and Southdown rams as sires of market lambs compared in long-term study

Management of weeder geese in commercial fields

Growth responses of three annual clovers to treatments with 2,4-D—Part II

Collapse in California woods

Mallet wound canker of almond trees

Wind machine-orchard heater system for frost protection in deciduous orchards

Breeding potatoes for disease resistance

Potash on potatoes for chips

Potash: In California vineyards

Chemical weed control in azalea seed crop

Color and stability of wines

Control of the vinegar fly

Embedding media for electron microscopy

Effect of environment on rice plants

Moderate grazing protects future forage production

Corrosion of aluminum irrigation pipe

Chemical regulator of plant growth

Lygus bug tolerance: To insecticides

Land disposal of industrial waste waters

Infection of perennial delphiniums by California-aster-yellows virus

Celery calico on perennial delphiniums and certain other host plants

Perennial-delphinium ringspot