l'KK.MI>Slill.i: IKXIiiATloN < |IAI<iil> 



•J.l 



of «'XMmpli'N Hvailahlr in tin- pivsrut ^tu^ly whs not stifth-icnt to justify 

 iittiMnptinu MU'h a rorrt'lation. WIhmi available data p«Tinittft|. Iiow- 

 rvrr, tlu' fost of irrii:ati<»n wattT has JMrn rxprt'ssfd as a |t«'rr<>ntauf <»f 

 prt'liarvt'st labor ami inati'rial t-osts. siniM'. for any ^'ivrn rrop and for 

 any .stan«lard of i*nltnral prartirr. thf latttT art* ^rnrrally ind«'p<'tidrnt 

 of otluT fartors. Oidy in tin* i-as*' of citrus fruits has this bn-n done. 



Crops Considered in the Study. 



As [iroviously imlicati'd. tlu- a;rrit-ulturt' <»f tin- upp«'r San .loaquin 

 Valby is highly divrrsititMl. but it lias MM-nird ni'ithiT ni'crssary nor 

 tiesirablr to attempt in this study to covor hII of tlw t-rops. What has 

 Ihm'H don«' has Immmi to consider those crops r»r ;;rotips of iTops which 

 represent the principal brancht's of production. These are citrus fruits, 

 deciduous fruits. ^ra|>es. ^rain. cotton, alfalfa, and miscellaneous field 

 crops. 



