Arizoxa Agricultural Expf.rimkxt Station 443 



During the spring of 1920, velvet beans were planted in corn 

 and in kafir. Likewise, several plantings of cowpeas were made 

 in fields of Mexican June corn. In these experiments a part of thi; 

 legumes were pkinted without inoculation, while a part were 

 ])lanted with inoculation. Whether or not there will be any dif- 

 ference in the final yields remains to be determined later in the 

 reason. As another portion of this project, cotton has been planted 

 by the ordinary method except that every third row has been 

 planted to cowpeas instead of cotton. Part of these cowpeas weri 

 inoculated before planting and the rest were planted without inocu- 

 lation. It is our intention to plow these cowpeas under about the 

 time they reach the flowering stage. This is a repetition of an 

 experiment carried last year. Last year there appeared to be no 

 practical difference between the cotton produced where cowpeas 

 were inoculated and where they were not inoculated. However, 

 another acre of cotton planted in the same manner, but without the 

 use of cowpeas, produced a little more cotton than either of the 

 ])lantings indicated above. 



On the Experiment Farms near Prescott, Cochise, and Yuma, 

 comparative plantings are being made with different varieties of 

 cowpeas and with a very few varieties of soy beans. However, 

 June 30 is too early in the season to report definitely concerning 

 the probable value of these crops. 



IV. A STUDY OF TIIF VARIETIES AND MKTITODS OF CULTIVATION OF 

 IXDJ \N CORN AND TIIF VARIOUS SORGHUMS 



This project having been reported in full for the growing 

 season of 1919, presents but little additional data by the close of 

 June, 1920; consequently there are no definite results to report. 

 Practically the same experiments have been outlined and started 

 as were carried in 1919. 



v. THF CULTIVATION AND FIELD MANAGEMENT OF EGYPTIAN COTTON 



This project will be carried almost entirely on the Salt River 

 Valley Experiment Farm near Mesa. However, observations in- 

 tended to support or verify our experiments will be made through 

 out the sections of the State where Egyptian cotton is grown. Our 

 experiments for the season of 1920 include date-of-planting tests, 

 ranging from March 1 to May 15; rate-of-thinning tests, ranging 

 from spacings of six inches apart in the row to spacings of eigh- 

 teen inches apart in the row ; methods of irrigation, varying from 

 the ordinary flooding method to irrigation in furrows, and from 

 the common method of watering early in the spring to the with- 



