A Study of the Varieties and Methods of Cultivation of In- dian Corn and the Various Sorghums..... The Cultivation and Field Management of Egyptian Cotton......566 Sudan Grass Hay Versus Alfalfa Hay for Dairy Cows.. PAGE Horticulture .587 Citrus Fruits.. 587 New Plantings.... ..587 The Effect of Fertilizers and Cover Crops on Tree Growth and Yield... .588 Effects of the Transpiration of Trees on the Groundwater Supply....599 Soil Surveys...... .600 Methods of Irrigation in Casa Grande Valley.... .600 Susceptibility of Various Dates to Date Rot.. Cotton Black Arm and Angular Leaf-Spot.. Miscellaneous Studies.. Lettuce Rot... Field Crops.. Orchard Trees... Small Fruits........ Garden Vegetables.. Ornamental Plants. Other Activities....... Poultry Husbandry... .609 609 609 .610 610 .611 .612 613 614 614 .615 .616 Illustrations Fig. 1. Salt River Valley Farm: Foreman's house completed September, 1920..... 563 Fig. 2. Salt River Valley Farm: Field Peas as a green winter manure crop .565 Fig. 3. Varietal tests of barley in the Yuma Valley; common six row on left; beardless in the center; Mariot on right.. ..569 Fig. 4. Salt River Valley Farm: Field tests with rye; Rozen rye on left; Abruzzes rye on right....... 569 Fig. 5. Fig. 6. Curves showing inheritance of earliness (as indicated by date of appearance of first head) through four generations of a cross between early (Sonora) wheat and a late (Red Turkey) wheat ..604 .607 Effects of date rot disease; note mummies still hanging to tree and on ground... Fig. 7. Field of lettuce near Toltec, infected with bacterial rot.. .....608 610 Fig. 9. Trunk of peach tree killed by crown gall. Note the large gall at base of trunk on the left side..... 612 ADMINISTRATION D. W. WORKING The University year which ended June 30, 1921, represents an important period in the life of the College of Agriculture. In its teaching work the College has had the best year in its history. More students of college. grade were registered and taught than in any previous year. The teaching has been inspiring and effective. Students of agriculture have worked diligently and have ranked high in scholarship in comparison with their fellow-students of the other Colleges of the University. There is good reason for believing that the people of the State have greater faith than ever before in agricultural education as a preparation for the business of agriculture. A summary of the registration of students in the College of Agriculture for the ten-year period which ended with the University year, June 30, 1921, shows in a general way the growth of the educational work of the College on the University campus. The first column below gives the year; the second, the total number of students enrolled. It is to be noted that in 1919-20 the University admitted a considerable number of students who were unable to comply with the ordinary requirements. This was done to enable former service men to secure vocational training. The result was that the College of Agriculture enrolled 31 students of the subcollegiate grade during that year. As it was found undesirable to continue the practice, during the year 1920-21 no students were admitted who could not qualify for the regular college work; and so the total registration for that year was 8 less than for the previous year. Deducting the number of subcollegiate students, the actual enrollment of students of college grade was 95 in 1919-20; and the increase for the following year was 23. 1911-12 1912-13 38 53 The irregularity of the increases shown above needs a few words of explanation. The sharp decline in attendance for 1917-18 was clearly due to the World War. The slight increase in the following year can be accounted for by the number of students who returned to the University after being discharged from the Army. In 1919-20 colleges and universities throughout the country gained very largely in attendance. Our own registration in the College of Agriculture showed an increase of 340 percent. Part of this gain has already been accounted for; and the remainder can be explained by the more general recognition of the value of college training for men entering the various agricultural pursuits, the more extended knowledge of the character of the instruction offered, and the increased population of the State. AGRICULTURAL EXTENSION WORK What has been said thus far relates to the campus teaching of the College of Agriculture. Developments during the past ten to fifteen years have made it necessary to distinguish between the resident teaching and the extension of the agricultural colleges. It has come about that a very large part of the teaching efforts of the College of Agriculture are put forth throughout the State; and at the same time a smaller portion of the teaching work is done within college classrooms and laboratories. This is as it should be. The people of the farming communities recognize their need of instruction, and they as frankly ask that the college extend its activities to every part of the State where farmers and their families can come together to receive instruction. Practically every man and woman on the farms of Arizona knows of the work of the County Agricultural Agents and the Home Demonstration Agents who are working in the agricultural counties of the State. Not all of them realize that these men and women are members of the teaching faculty of the College of Agriculture. Increasingly, however, the people are becoming aware of the purpose of the College to teach agriculture and home economics wherever country communities are willing to organize to receive instruction. So the work of agricultural education is widening its field of influence; and the instructors at the University and among the farms and farm homes of the State are finding the people becoming more responsive to intelligent instruction and readier to do their share to make cooperative agricultural extension work more |