260 Twenty-seventh Annual Report 



The next 10-acre field was treated in a similar manner, except that 

 it was planted to Sacaton June corn in the middle of July. This field 

 was first plowed in April. The Johnson grass was kept down by the 

 cultivator until June, when the field was replowed to facilitate leveling. 

 After being put in corn it was again kept under control by the cul- 

 tivator and by hand hoeing. The condition of the Johnson grass at 

 the time of the first frost was much the same as that in the cotton. 



The remaining 40 acres are divided into two 20-acre fields, both 

 of which have had the same treatment to date. One of these is to be 

 planted in grain in December, 1916, and the other is to be continuously 

 dry fallowed. All of this land was plowed in March and April, and re- 

 plowed in xA.ugust. It was disced in July and September, and after the 

 latter operation was run over twice with a "Cyclone" weeder. The 

 fight against Johnson grass on these two fields, while it has unques- 

 tionably borne good results, has probably been the least effective of that 

 on any of the fields, and there are a number of roostocks remaining 

 V. hich have approximately normal vigor. An exceedingly heavy rain 

 late in the summer and occasional accidental leaking of irrigation water 

 have been largely responsible for reducing the efBciency of the Johnson 

 grass control method on these fields. It appeared advisable on one oc- 

 casion to pasture sheep for a short time on these fields, owing to an 

 increased growth of the grass due to heavy rains. The value of this 

 pasturage from each field was estimated at $4.60 per acre and is the 

 only returns we have received from the fields during the experimnts. 



WHEAT AND ALFALFA 



As mentioned above, the north half of the east 80 acres was put 

 mto wheat and alfalfa. This was run under commercial farming con- 

 ditions and was in no sense experimental in its nature, though it had its 

 value for demonstration purposes. This 40-acre tract had been in 

 grain in the spring of 1915. It was plowed dry in August of that 

 year. 



Twenty acres were prepared for irrigation in November, 1915, and 

 sown to Early Baart wheat on November 25, at the rate of 60 pounds 

 jitr acre. The soil is very fertile, and a heavy stand of very high wheat 

 was the result. Danger of lodging made it inadvisable to give it all 

 the water it needed for complete filling. A very slight damage was 

 caused by rust, and a considerable amount of trouble was experienced 

 from lodging. The yield was slightly more than 1900 pounds of grain 

 per acre, and, in addition, 27 tons of straw were sold. 



The wheat stubble on 9 acres was plowed up in July and early 



