Nontoxic ferns: Feeding tests with cattle find gold fern, bird's foot fern nontoxic

Also in this issue:

Marketing channels studied: Marketing of fresh carrots, celery and asparagus in California studied to determine channels

Blood-spotting in eggs: Controlled by breeding in a ten-generation selection experiment with Single Comb White Leghorns

Lettuce growth rates: Investigations find heat unit accumulations not a reliable means of predicting harvest time

Invisible injury of citrus: Insecticide tests indicate that oil sprays lower soluble solids in juice and reduce dry matter in leaves

Lithium toxicity in citrus: Recognized on leaves in a grove in Santa Barbara County on the basis of artificially produced symptoms

Citricola scale control: Tests find parathion a control agent of outstanding promise in commercial navel and Valencia orange groves

Resistance to fumigation: Studies of outbreak in southern California reveal resistance to hydrogen cyanide fumigation persists

Westside dust test plots: Studies designed to develop plants and grazing systems for effective dust control under way in three counties

Research at field stations: Local agricultural problems are studied and fundamental research applied in distributed outdoor laboratories

Lemon fruit quality: Rootstocks affect juice content, soluble solids, acidity of Eurekas

Citrus-root nematodes on olive: Pest pathologically and morphologically similar to that on orange roots infests and reproduces on olive roots

Swine production: Main factors of improvement are prolificacy, milk production, type

Growth and yield of certain Gramineae as influenced by reduction of photosynthetic tissue