Calag Archive

The work on insects in relation to the spread of orange tree quick decline has heen going on since 1945. During this period it was determined which insects are found commonly in southern California citrus groves and over 750 transmission tests were conducted in an attempt to discover the vector.

The accurate measurement of color in a product is a very difficult matter and is usually attempted in considerably simplified form in the food industries, as for example, by canners in standardizing and in improving the color of tomato products. It is much simpler to state that a certain tomato paste has, let us say, 0.01% lycopene—the principal coloring matter of the tomato fruit—than to measure the color, which means, in effect, describing its redness in quantitative terms.

Wind machines afford economical frost protection where short, light radiation frosts are frequent and it is impractical to call out crews to light orchard heaters.

Vaccinating against pneumoencephali-tis—Newcastle disease, pneumo, PE—with the live-virus vaccines has been erroneously greeted as the final answer in the control of this disease. These live-virus vaccines are stop-gap measures. Little thought has been given to the many pitfalls and dangers of these products.

The olive fruit has, in general, the same growth pattern of the other stone fruits, such as the peach, plum, apricot, and cherry.

Few California farmers grow cotton exclusively.

Brush type almond harvesters—in practical use for the first time this year—already have demonstrated advantages over the suction type harvesting equipment introduced three seasons ago.

Incidental to the studies which have been undertaken in the Food Technology Division for the past 30 years, it has been observed repeatedly that the skins of frozen apricot halves have a disagreeable tough texture. Consumers of the commercially frozen fruit also have expressed disapproval of this characteristic. Thinking over this problem always raises the question: Are the skins really tougher in frozen apricots than in their fresh counterpart, or do they only appear to be so by contrast with the flesh which becomes somewhat flabby as a result of freezing and thawing?

Carbohydrates, essential foods in human nutrition, are manufactured by green plants. All other living creatures are completely dependent upon plants, because they alone have the power to make sugars from the simple materials of carbon dioxide and water. This is accomplished by a process called photosynthesis.