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XII. ANALYSES OF IRRIGATION WATERS.

During the seasons of 1903-1904 Prof. F. L. Kent of the agricultural department studied irrigation in Klamath county. In connection with this work the chemical department made the following analyses of irrigation waters:

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For grains per gallon use the divisor 17.12.

The details of the irrigation work have been published by Prof.

F. L. Kent in Bulletin 86 of this Station.

XIII. FERTILIZING VALUE OF WASTE PRODUCTS FROM CANNERIES

AND MANUFACTURING ESTABLISHMENTS.

Last year considerable data were procured but is not yet in shape for publication. It is hoped not only to obtain the amounts but to make analyses and thus find the fertilizing value of these materials most of which at the present time are thrown away.

XIV. THE EFFECTS OF THE USE OF LIME IN THE STRAW HEAP.

XV. THE ACTION OF LIME AND POTASH SALTS ON WILLAMETTE

VALLEY SOILS.

The work relating to the effect of lime in the straw heap will be finished this fall. This work was started in September 1902, when straw heaps both with and without the addition of quicklime were exposed to the weather. In the near future these straw heaps will be moved and examined and analyses made and compared with those made at the beginning of the experiment. In this way it is hoped to ascertain the effects of lime on straw.

The work relating to the action of lime and potash salts on Willamette valley soils has not yet been started, but will probably form one of the new lines of Station work.

XVI. MISCELLANEOUS WORK.

This includes various kinds of work, among the most important of which are soil analyses. During the year the following soil analyses have been made:

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2847 E. L. Wonacott, Firwood 2848 J. M. Smith, Creswell.. 2854 Sam Egger, Waldo

2855 J. H. Reid, Milwaukie.

.17 99.83

.10 99.90 57.50 42.50 2.92 97.08

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7.42 92.58
5.26 94.74
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.70 99.30

2869 Deschutes Irrigation & Power Co. Bend-1st foot 21 80 78.20 2870 Deschutes Irrigation & Power Co. Bend-2d foot 19.40 80.60 2871 Deschutes Irrigation & Power Co. Bend-3d foot 17.50 82.50 2921 Chas. S. Moore, Salem [sagebrush soil]

44 26.50

35 12.97

.69. 11 23

From these analyses it will be seen that in general the soils of Oregon are rich. An average amount of nitrogen and phosphoric

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acid would probably range from .10 to .20 per cent. Soils containing more than this would be considered rich whilst those containing less would be considered poor in nitrogen or phosphoric acid as the case may be.

Beaver dam soils contain from less than one to over two per cent. nitrogen.

An average amount of acid soluble potash in the soil would probably be from .20 to .30 per cent. Greater amounts than this indicate an abundance while a smaller amount means that the soil would be much benefited by increasing the amount of available potash present.

In some cases the per cent. of lime in the soil is quite low, but in general the amount seems to be sufficient for crop purposes.

Magnesium should always be intimately associated with lime in in the soil. Magnesium in considerable excess of lime acts as a poison to plants,* on the other hand too much lime and too little magnesium is detrimental to plant growth. It has been suggested that the best proportion of soluble lime to soluble magnesium for the germination and growth of plants is about 7 parts by weight of lime and 4 parts magnesium. The magnesium seems to be necessary to make it possible for the plant to assimilate phosphoric acid. The following insecticides have been examined:

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The few analyses that have been made indicate that the insecticides used in this State are well up to the standard.

In some sections of the West wild oats (Avena fatua) grow very abundantly. Typical samples were obtained at different stages of maturity and analyzed with the following results:

*The relation of lime and magnesia to plant growth, by O. Loew and D. W. May, U. S. Dept. Agr. Bureau of Plant Industry.-Bulletin 1.

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These results indicate that wild oats are considerably richer than average timothy hay; nearly as rich as Kentucky bluegrass or redtop, and compares favorably with orchard grass and ordinary oat

hay.

Two samples of forage plants were received from the Eastern Oregon Experiment Station for analysis; both were in excellent condition, one being common alfalfa and the other locally called "blue clover" (Melilotus coerulea).

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These analyses show that the sample of alfalfa is somewhat richer than the average, and that the so-called blue clover is a plant exceedingly rich in protein.

At the request of Dr. D. G. Fairchild of the U. S. Department of Agriculture several samples of barley were examined for protein:

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Laboratory number

KIND OF feed

SENT BY

A few samples of concentrated feeding stuffs have been examined for parties interested in stock feeding:

Air Dry Substance

Water-free Substance

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These prepared mill products, with the exception of the gluten feed, when compared with average wheat bran (see last analysis), will be found to be much poorer in protein than is the wheat bran. True, most of them are richer than bran in fat, but at the same time those that have been analyzed are probably not so valuable.

Moisture

Dry material

Ash

Protein [N x 6.25]

Crude fiber

Nitrogen-free

extract

Fat

Dry

Material

Ash

Protein

[N x 6.25]

Crude fiber

Nitrogen-free

extract

Fat

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