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The following article is the first of a two-part progress report on studies of the relative susceptibility of avocado rootstocks to chlorosis.

The Kara mandarin is a tangerine-type citrus fruit, which was first described in 1935. Its parents were the Satsuma mandarin and the King-probably a tangor. Because of its high quality, additional studies were made in 1952 on the behavior of the Kara.

Some of the newer, specific acaricides— products of modern research in agricultural chemicals—have shown promise in field tests as the possible solution to the centuries old problem of malformed lemon fruits.

A condensed beet solubles product— MC-47—has a feeding value of approximately 82% that of blackstrap molasses when compared on a liquid basis.

Melon fields—if left unprotected from the cucumber beetle—are likely to be damaged and some will be completely destroyed.

Foods vary in nutritional value and in price and—when not controlled by taste preferences—their purchase usually is for nutrient content. But because most foods contain seven or more essential nutrients appraisal is difficult without some sort of guide.

On California rangelands, the perennial pine bluegrass—Poa scabrella—may enter complete dormancy in late spring when surrounding annual vegetation is still green and vigorous.

A good dryland pasture stand can be obtained on sloping or hilly range land with a minimum of seedbed preparation—and without undue loss of top-soil.

Hundreds of samples of deciduous fruit and olive pollen—used in breeding and artificial pollination studies—have been stored satisfactorily from one season to the next in an ordinary home freezer at temperatures ranging close to 0°F.

Most varieties of sweet potatoes— Ipomea batatas—normally do not produce flowers under California conditions. The ability to induce flower and seed production would greatly facilitate the development of varieties with superior quality, higher yield, and disease resistance.

The agromyzid leafminer—Liriomyza subpusilla Frost—was more abundant on tomato during the 1952 season than in any other recent year.