Calag Archive

Pulsating air as a means of shaking the limbs of prune trees is a feasible method of harvesting with catching frames.

Each year the California cotton crop suffers quality reduction and yield losses —estimated at 3.5% to 4.0%—due to fungus boll-rotting organisms.

Research on the characteristics of the market for standing timber—stumpage—and logs from small woodlands of less than 5,000 acres, was started in 1957 in the forested portions of El Dorado, Placer, and Nevada counties west of the Sierra Nevada summit.

Spider mites attack field corn in most corn growing areas of California. In the interior valleys, and especially in the San Joaquin Delta region, the mite populations become so abundant in some years that they may cause premature drying of the foliage.

No effective spray program against the navel orangeworm—Pararnyehis transitella (Walker)—has been perfected. Therefore, control is dependent on orchard and plant management because the insect, primarily a scavenger, is capable of attacking sound walnuts after the husks have cracked.