All Issues

The harvesting date of Blenheim or Royal apricots in Contra Costa County has been predicted within two days 50% of the time, and within four days every season in a 17-year experiment at Brent-wood. In two years the predicted and actual harvest date were the same.

Efficiency of the codling moth and aphid control program depends to some extent on the type of sprayer used.

The virus of citrus quick decline is transmitted by the melon aphid, Aphis gossypii Glover.

Current research projects in agricultural economics are planned to provide adequate bases for constructive decisions pertaining to agriculture.

The second of five articles reporting the findings in investigations in the effectiveness, the safety and the cost of the use of controlled burning as a tool for land clearing. No attempt is made to provide one formula for prescribed burning in California; each fire is an individual case to be planned at site of burn.

Powdery mildew and rust are common and serious diseases of certain varieties of greenhouse-grown roses in the Bay Area of California during the late spring and summer seasons.

The two-spotted spider mite is a constant threat to chrysanthemums–especially under cloth-house conditions in San Mateo and Santa Clara counties where nearly two millon dollars worth are grown annually.

Spider mites on cotton– the Atlantic mite, Tetranychus atlanticus McG.; the Pacific mite, T. pacificus McG.; the two-spotted mite, T. bimaculatus Harvey should be controlled by killing the mites in their overwintering stages on winter and spring host plants and on the ground.

Raisins may replace 30% of the grain portion, or 16% of the entire ration for turkeys in the late growing periods without markedly affecting the gains in body weight, efficiency of gain or market grade of the birds.