THE EANGE RESEEYE TRACT. 



25 



localities conspicuous growths of the pricklj' popp}^ {Argemone platy- 

 ceras) were to be seen. The latter was quite persistent and continued 

 to bloom until June. 



In this description no attempt is made to give a list of the plants 

 growing on the fenced area. A sufficient number is given to show 

 the character of the vegetation in the different seasons. 



By the 1st of April the majority of the winter annuals were dried 

 up, and a month later they were all quite dead and their seed had 

 been scattered, so that all tliat was necessary to make the region look 

 as it did the previous fall was to have the cattle eat off the dead 

 herbage, which they were rapidly doing on the outside of the fence. 



\. i2 



X 





S 



S 





e 



5 



4 



6 



^. 





WL5T -^- 





















..^ 



\ 



















0= — r:3 — 



T:3 



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5 0J'H 



Fig. 2.— Diagram of Area C. The figures indicate the position of the stakes in each plot; broken 

 line, separation between disked and harrowed portions. 



The following detailed account of the forage plants planted is pre- 

 sented for comparison with figures 2, 3, 4, and 5, respectively. 



AREA c. 



Operations were begun on this plat on the 10th of January, imme- 

 diately- after a rainfall of 0.42 inch. After seeding the north half was 

 disked and the south half harrowed directly east and west. The 

 ground was conspicuously ridged by the disk harrow, and the seed 

 was consequently covered to varying depths. Subsequent showers 

 showed beyond a doubt that this ridging was an advantage in pre- 

 venting a run off of water. The area is 400 feet in width b}' 2,200 

 feet in its greatest length. It measures 17^ acres and contains plats 

 1 to 12, on which were planted seed, as follows. 



Number of plat. 



Name of forage plant sown. 



Seed, native or 

 foreign. 



Area of 

 plat. 



Arizona. 



1 } Chloriselegans 



2- j Nothing sown 



3 Chloris elsgans Arizona 



i I do ] do 



5 1 Andropogon saccharoides ; do — 



6 I Agropyron spicatum Northwest. 



Agropyron occidentale | do 



Hilar ia muHca Arizona 



Bromus unioloides (?) 



Bromus marginatus 



Pappophorum vaginatum 



Eurotia lanata 



10a. 

 Ua. 

 12a. 



Idaho ... 

 Arizona. 

 do... 



Feet. 

 400 by 60 

 400 by 140 

 400 by 40 

 400 by 40 

 400 by 400 

 400 by 200 

 400 by 200 

 400 by 100 

 350 by UK) 

 200 by 100 

 150 by 100 

 100 by 100 



a The areas given for plats 9 to 12 are only approximate, for they, taken together, form a tri- 

 angle, and the exact length of each plat has not been determined. 



