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Show Achievements Made In "White Fly" Control "It is anticipated that sugar-beets j will segregate (break up into strains) for varying degrees of resistance to I kafhopper injury as they have done J for sugar content and vigor of growth. This whole problem is one j of considerable complexity and will be expensive and require several years' work. However, the fact that a method has been found of growing a seed crop every year instead of j every two yrears should reduce the j iime to one-half. "Nor must we lose sight of the vast amount of chemical work that must be done in order to maintain sugar per centages and tonnage yields while searching for a strain resistant to the diseas- transmitted; by the sugir-beet lenfhopper. Last: year chemical tests were made on i 783 individual beets. This number! must probablv be increased three or: four times to insure success. ! "The analytical work necessary forj hist year's work was done without j charge for the station by the Frank-! l!n County S;:gar company in their factory near Treston. This public spiritedness on the part of this sugar company is highly commended and spprociated by the Utah Agricultural Agricul-tural Experiment Station. It meant difference between success and failure in this preliminary work." Beet growers throughout this sec-! tion, and who have suffered many losses through the white fly . pest. I will be encouraged through experi-' mentations that have been conducted 1 at Logan during the past several months. j Dr. George Stewart, Agronomist of the Utah agricultural experiment station, has just issued a report announcing an-nouncing the successful conclusion of a series of sugar-beet breeding ' experiments leading toward an attack at-tack on the problem of resistance to ! suger-beet leafhopper ("white fly"). The experiments completed show what has not been before demonstrated demon-strated in America, that pollination can be controlled by proper field technique. The report is as follows: "No attack from the plant-breeding angle could even hope to succeed without this knowledge of how to control pollination," says Dr. Stew-r.rt. Stew-r.rt. "Members of the Agronomy staff have worked faithfully on this problem prob-lem for the last two years and have at last fully proved the success of their teche.iique. Professors D. C. Tingey and D. W. Pittman have cooperated co-operated with me in this work and also on work of isolating strains which are promising for high tonnage ton-nage yield and for high sugar content. con-tent. "Last season 30 strains of beets were grown which had been self-fertilized the previous year. Of these P.? strains produced suffiecient stand for testing. About one-third of these were markededly uniform for yield and sugar content. Some yielded fully double as much as others. Two especially were uniformly vigorous. In rbout 20 strains that seemed uniform uni-form for sugar content obout 19 per cent in these cases. The others v, eve intermediate in this respect. |