Problem of reinfestation by apple aphid subject of three-phase study

Also in this issue:

Fruit and vegetable canning industry market structure changing as result of supply pressure and increased competition

Comparative study made of lugs and bins for fruit handling between orchard and packing plant

Bulk bin cooling of oranges in storage rooms

Transfer of radioactive fallout debris from soils to humans investigated

Mechanical gopher-bait applicator for pastures and open fields

New theory in adhesives for wood

Search for chemicals to kill fungi in soil without injury to crop plants

New process produces flor-type sherry in less than six weeks

Effect of lenath of dhotoperiod on grapefruit seedlings

Nematodes in vineyards

Parasites of the walnut husk fly found on black walnut trees

Pen space for market swine raised in confinement

Size factors in wood testing

Soil drainage in artesian water pressure areas

Stressing factor of histamine in poultry

Survey on consumer preference in fruits and vegetables

Function of manganese in nutrition

Radio frequency energy for freeze-drying of foods

Two-spray program controlled Western peach tree borer on apricots in Contra Costa County studies

Placement of tensiometers as guides to irrigation practices

Soil salinity on Tulelake lands

Simple and accurate device for sprinkler irrigation flow measurements

Pressure panel for soil moisture removal measurements

Hydrologic studies of the Putah Creek area in the Sacramento Valley, California

Chemical composition of water in the Putah Creek basin