All Issues

Vaccinating calves against brucellosis reduces the incidence of the disease but can not be expected to eradicate infection.

The composition of milk changes during a year due to stage of lactation of the cows primarily, and to feed and weather conditions and those changes may cause difficulties in dairy product manufacture.

It is probable that effective control of Rhizopus rot—Rhizopus nigricans Ehr.—on peaches can be obtained—without fruit injury—by two 6-hour fumigations of an average ammonia concentration of about 250 ppm—parts per million.

Thorough disbudding—removal of all unwanted buds, or eyes—of a root-stock cutting before rooting it in the nursery costs far less in both money and time than removing suckers after the vine has been planted in the vineyard.

Shade—cast by roof overhangs, projections, louvers, trees—can be used to control the sun's heat in residences, machine sheds and livestock buildings or enclosures.

Out of 11 trials completed over a nine-year period, significant responses—increases as high as 31%—have been obtained from five out of six trials on Ripperdan soils. In the sixth trial on Ripperdan soil and in one trial out of three on Hanford soils, the response was only slightly below the degree of significance. No response was obtained in one trial each on a Ripperdan-Dinuba soil and on a Grangeville soil.

Dual-purpose — hay and grain — Hooded Atlas barley was created from a lineage of about 5,000 plants grown during an 18-year period.

The larvae of a small, leaf-mining moth—Tischeria sp. Family Tischeriidae—apparently a new species close to T. aenea Frey and Boll, burrow serpentine mines in the leaves of strawberry plants.

Relatively safe to handle during spray operations and less toxic to mammals than DDT, Kelthane—4,4′-dichloro-a-(trichloromethyl) benzhydrol—has utility for control of mites injurious to citrus in California.

Gibberellic acid—one of several similar growth promoting substances—produces a rapid abnormal elongation of shoots and leaves in many plants at dilutions as low as one ppm—part per million.