Arizona republican., 1916-12-17

,adsanltge in le.ns when the season ls cut shc.t aY carly fr0gfs
 Tn ~stFopf, tendency h the Pins. Disuts to des elpp fewer and shorter limbs than the Y1ma plants gives fhe fo, ner Varicf~ a decided ad- vantage hy making the picking easle.-. A fnrthsr Hd, aatace consistr .n haN- ing g larger proportion oi ;hc polls borne on he branches of thc main stalk instegd of on the iimha With % vc"N long season the average plant
 pf Numn mirhi ripen as many bnllS as t'ic ay@tage plant of Pima. bui iI ordiraTs Ycafss many pf the bo!is born" of thS lapge limbs of tho Yuma plants do not have a chance to ma turc. and the bottom crop bcin1 larseiv shaded of" a smaller pro- ductirn results.
 The nols of Pima cotton at> plumpcr ard better filled than the average inuia boil. and Pima is. th Hr' fore. superior in weight of seed coitfr Ter boil Consequently. with the former variety the picker sccnrea 2. s-nc hat larger return for hi. h a0or ln Int percentage the two varieties differ but slightly. tho ad- vantage. II any. being in favor of the YIma
 Tho Pimn cotton produces longer nnd .ner filer than the Yuma ant for this reason should command 3. better price .a the market. but ever
 f there Feic no difference inN tl.e valnc of he fiber. the superiority of tho Pima variety in prodyctiveness. eo o~lircss. size of bolls ard greater freedom from limbs Is likely to make ,t tho more profitable type to grow Greater Uniformity of Pima Cotton -i ln the present condition of the two varieties Pima .s much the more rniforn. having had the advantage of improi sment~ in the methods of cotton breeding which have taken piece since the Yuma Yarioty was
 turned over to tho growers. This difference in uniforflity was ap- parent .ast summer ,o the growers of Pima cottcn in the Salt River val ley. all 9f whom had grown the Yuma variety in previous years. In
 the Yuma fields f Is easy for anyone who is at all familiar with the cotton piant to pick out several types which differ lu general appearance and in the shape of the leaves and hoils. In t"c Pima fields. or he other hand unlg ono tyne of plant is ilres- cnG. The individual plants Of the Ypma variety also show marked dif- ference in length of fiber. while the Pima plants are much moIr uniform in this reapect With long staple cotton this matter of uniformity is very important and is a large factor
 in the value Of the cotton to the spinner.
 Field Test of Pima Cotton in 1915 The Pima variety seemed to be SC promising that in the spring of lalf arrangements were made for a field test in cooperation with the Salt River Valley Egyptian Cotton Crow CTS Association. Thrca strains Of the Pima variety each derived from q | Singi" selected Ilant were inclu ded in this test These strains differ SO slightly that up Co the time this co operative planting was made TO de- cisior had been reached. as to whic.. ie the beet of them II was therefore considered desirable to plant an acre. age of cach str.in large enough to lnfford a thorough compar ison of theii
 pchaviot uedci tho soil conditions Of the Salt River Valley ana to furnish { sufficient fiber for q comparative spinning test in order tu prevent tanv possibility of mixing the differ ent strains before it could he defin- itciy determined which one should be , cOnmerrialiv grown the United Sts.tee department of agricrlture re. ta,ncG an option on all the seed to be produced in these fields Contracts were executed binding the farmers wno received this first supply of Pima seed to follow the instructions of accredited agents of the dep'rt -# m.nt in regard L. the preparai ipn pianting cultivation, and irriga' ion of the land ard the thinning. rogaing 
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