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Bulletin No. 170 - A Study Of Methods Of Determining Soil Alkali, D. W. Pittman

UAES Bulletins

There is a great lack of uniformity in the methods of testing soils for alkali salts and in the forms of expressing the results in a way that will show the relative toxicity of the salts. This has been pointed out by numerous investigators and has been shown to complicate the determinations so much that the results of different investigators are hardly comparable. It is of further disadvantage in that the toxic limits of an alkali as worked out by one system of analysis are often difficultly applicable to a soil that has been tested by another system. However, it …

Bulletin No. 168 - Relative Resistance Of Various Crops Ot Alkali, F. S. Harris, D. W. Pittman

UAES Bulletins

Plants show considerable variation in their resistance to soil alkali. Some varieties of native vegetation grow only where the salt content of the soil is high. Most of the cultivated plants, on the other hand, are injured very decidedly by the presence of large quantities of soluble salts. To this rule there are a few exceptions such as the date palm.

In most of the arid parts of the world there are sections where the presence of alkali is the chief limiting factor in crop growth. Millions of acres of land are in the border zone between complete freedom from …

Bulletin No. 169 - The Use Of Alkali Water For Irrigation, F. S. Harris, N. I. Butt

UAES Bulletins

Because of the scanty rainfall of arid regions, the soluble materials in the rocks and soil are not leached out as they are where the rainfall is high. As a result, the accumulation of excessive quantities of soluble salts is likely to be a menace to arid soils. Farm practices must be directed toward preventing this condition.

Bulletin No. 166 - The Climate Of Utah, Frank L. West, N. E. Edlefsen

UAES Bulletins

Climate is of interest and importance to the scientist in general. It is particularly important to the investigator in the field of agriculture because growing crops are affected quite as much by sunlight, heat, rain, and frost as by the fertility of the soil. In field investigations these factors must be determined and reckoned with.

Bulletin No. 167 - The Irrigation Of Oats, F. S. Harris, D. W. Pittman

UAES Bulletins

It is well known to farmers that the oat plant is more sensitive to the moisture condition of the soil than are many of the other farm crops. For this reason oats find favor as an irrigated crop, since under irrigation the supply of water can be so easily controlled.

In order to secure the best results, it becomes necessary to know as much as possible about the moisture requirements of the various crops that are to be irrigated. This is particularly true of oats on account of their sensitiveness. The farmer should know at which period in the life …