PBRMIS.SIHLF. IRUI«iATION' ('HAROICS 49 



Yii'Ms nlso are nvnilabK* from 19 ontcrpris*' ofllfitMu-y studii's of 

 tlu> Au'rirultural Kxtciisioii S«'rvii«»' in Tulan* rounty for 1929. Tin* 

 .\ • LTO for this year was l.Sl tons. Nine records for Kre.sno for 

 !;'_'- i^'avo an averavr*' of 'J.O.') tons per aere. 



Data are not available for making; a true average of tlie above yields. 

 After ver>' careful consideratitm and consultation with competent 

 authorities, the conclusion has bcni r»*ached that a yield of l.'tO tons 

 of raisins per acre is a reasonable limi'" '■• ••-• f" ■•• <V'* rniinin^r farni 

 income in c«)nnection with this stmly. 



Prices. — The price of raisins has fluctuated widely. The averape for all 

 varieties for the ]>eriod 1910 1914 was :{.41 cents per pound. From 

 1909 to 1926 the fluctuation was from l.OS to 12.61 cents, the latter 

 iKMii^r for the hifrh-price year of 1920.* Accordintr to A}rricultural 

 Extension Service Circular :{!>. prt-.scntinj; the 19;U) aj^ricultural outlook 

 for California, the averajre price paid to prowers has not been as hiph 

 as 4 cents since 1921, and in four of the past eiijht years th^ price has 

 Won '\ cents a pound or less, with an average in 1929 of '^.5 cents a 

 pound. 



After consultation with those in close contact with the present eco- 

 nomic status of the raisin industry in California, a decision was reached 

 that a price of 3.25 cents a pound is th»' most satisfactory figure to 

 us<^ in connection with this study. Plate IV has therefore been made 

 up on the basis of this price and a yield of l.TiO tons an aere. 



This chart, similar to Plates I ami II used for Navel oranpes and 

 I>each»'s, resi>ecti vdy. i>re.sents graphically the situation with reference 

 to costs of production and permissible irrigation water charpes for 

 raisins. The heavy lines indicatinp thi- assumed averapc yield of l.'iO 

 tons an acre and the assumed averapc price of 3.25 cents a pound 

 intersect at a point which indicates retiirns that will pay the avcrape 

 cost of pro<hicinp and ' " -tinp the crop, intrrest at 6 j)cr cent on an 

 averapc investment oi :_ lO an acre,t and leave a nj.irL'in of $7.75 

 per acre to cover irripation water and additional profit^ 



• .<hoar. .SW.. and OouUl. H.K.. pA-onomlr Status of th« Qnipe Induntry. CttUfornla 

 AgT. Exp Sfa. r • ■" 



^ \srr.iK<- it- <-•. 1113. SO; lund, flSS; IroprovcnMnta and Mulpmont. 



Its. 



4— 80»9» 



