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Bulletin No. 284 - Lygus Bugs In Relation To Alfalfa Seed Production, C. J. Sorenson

UAES Bulletins

This investigation, which continued during the two succeeding years, had four primary purposes: (1) to determine the distribution of these plant bugs and the intensity of their infestation in the alfalfa-seed districts of the state; (2) to ascertain whether these bugs constitute an important factor, either causing or contributing to, the excessive flower-drop annually occurring in alfalfa-seed fields, or if they are otherwise responsible for decreased yields of alfalfa seed; (3) to study the general biology of these insects with particular reference to their life histories in alfalfa as the host plant; and (4) to investigate possible practical methods for …

Bulletin No. 258 - Alfalfa-Seed Investigations In Utah, John W. Carlson

UAES Bulletins

For many years alfalfa-seed production problems have engaged the attention of investigators in various parts of the world. Those factors which are regarded as of greatest importance in seed-setting are general climate, current weather, air humidity, soil moisture, and insect relationships within the various alfalfa-seed districts. Some attention in research has been given to pollen fertility and ovule sterility, as well as to general flower dynamics in relation to environmental conditions. Efforts have been made to develop strains of alfalfa having pollen that is resistant to injury by moisture or having self-tripping flowers or autogamous strains of alfalfa whose flowers …

Circular No. 98 - Insects In Relation To Alfalfa-Seed Production, Charles J. Sorenson

UAES Circulars

Various insect pests have been suspected of causing the unsatisfactory alfalfa-seed yields that have been obtained in Utah during recent years. No specific information was at hand giving the amount and nature of the damage which these insects were suspected of doing.

Circular No. 97 - Growing Alfalfa-Seed, John W. Carlson

UAES Circulars

SEED SHOULD BE GROWN FROM SUPERIOR VARIETIES AND STRAINS OF ALFALFA

The present tendency in alfalfa improvement is to establish narrow types or strains for special purposes and which are adapted to a particular set of conditions. It was at one time thought that an alfalfa variety with numerous types of plants would have a wider range of adaptability to diverse conditions and that inter- crossing among the different plants would maintain the vigor of the variety.

Bulletin No. 226 - Alfalfa-Seed Production, J. W. Carlson, George Stewart

UAES Bulletins

Utah's alfalfa-seed crop is of far-reaching importance. Since 1919, the growing of this crop has been a major industry in western Millard County and in that part of the Uintah Basin situated in Utah. These places are two of the relatively few large areas in the United States peculiarly adapted by climate for the successful growing of alfalfa-seed. As a cash crop, alfalfa-seed has a high commercial value. It is also the basis of the state's alfalfa hay crop, which in turn constitutes the foundation of Utah's livestock industry. Because of its wide dissemination, Utah's alfalfa-seed crop influences the feed …

Bulletin No. 218 - The Alfalfa-Seed Chalcis-Fly In Utah: 1926-29, Inclusive, Charles J. Sorenson

UAES Bulletins

During the past 10 or 15 years alfalfa-seed has constituted the major crop in western Millard County and in most of that portion of the Uintah Basin which is situated in Utah. In these sections of the state various natural conditions generally have been favorable for seed production. Within the last five years seed growers have thought that one of the principal limiting factors of the industry has been the alfalfa-seed chalcis-fly. Accordingly, a preliminary survey in the seed districts of the state was made in the fall of 1925 by the Utah Agricultural Experiment Station.

The greater part of …