CUEEANT-GEAPE GEOWING. 



with canes ringed, and two were vines with trunks ringed, 

 these vines were trained to stakes. 



13 

 All 



Table III. — Relative behavior of check vines and ringed vines of the Panariti 

 variety of currant grapes grafted on 10 varieties of phylloxera-resistant stocks 

 trained to stackcs at the Fresno Experiment Vineyard of the Department of 

 Agriculture in California for a period of 10 years, together with fruiting 

 results in 1917 and 1918. 



Name of the variety and of the 



Con- 

 geni- 

 ality. 



Range of dates in the 10-year period. 



stock upon which it was grown. 



Growth starting. 



Blooming. 



Fruit ripening. 



1 



2 



3 



4 



5 



Panariti variety: 



89 

 96 



93 



86 

 92 



89 

 95 

 95 

 85 

 92 



Mar. 2 to Mar. 28 



Mar. 1 to Apr. 1 



Mar. 6 to Mar. 26 



Mar. 2 to Mar. 27 

 Mar. 4 to Apr. 1 



Mar. 4 to Mar. 26 



Mar. 4 to Mar. 27 



Mar. 5 to Mar. 27 



Mar. 1 to Mar. 26 



Mar. 5 to Mar. 28 



May 2 to May 25 



May 6 to May 28 



May 1 to May 22 



May 1 to May 20 



May 5 to May 20 



May 2 to May 20 



do...... 



May 2 to May 23 



May 1 to May 20 



May 2 to May 20 



July 20 to Sept. 2. 



Aramon X Rupestris Ganzin 



No. 1. 

 Dog Ridge 



July 15 to Sept. 15. 

 July 15 to Sept. 10. 



Mourvedre X Rupestris No. 

 1202. 



July 15 to Sept. 12. 

 July 22 to Sept. 10. 



Riparia X Rupestris No.3309 



Rupestris St. George 



Salt Creek 



July 15 to Sept. 16. 

 July 15 to Sept. 14. 



Solonis X Riparia No. 1616. . 



July 15 to Sept. 16. 





Yield of fruit (pounds). 



Sugar content 



Acid as 



tartaric 



Name of the variety and of the stock 

 upon which it was grown. 



In 1917. 



In 1918. 



(Balling scale). 



c. c). 





Check 

 vines. 



Ringed 

 vines. 



Cheek 

 vines. 



Ringed 

 vines. 



In 

 1917. 



In 

 1918. 



In 

 1917. 



In 

 1918. 



1 



6 



7 



8 



9 



10 



11 



12 



13 



Panariti variety: 



7.5 

 21 



3 



1.5 



8 



5 

 17 



6.5 



8 

 24.5 



27.25 

 36.25 



12 



13.25 



19.5 



10.5 



30.25 



15.5 



19.25 



26.25 



7.5 

 11 



3 



2 



1.5 



2 

 20 



2 



1.5 

 19 



30.5 

 20.25 



22.5 



10.25 

 13.5 

 7.75 

 28.5 

 20.5 

 15.5 

 16 



30.5 

 28 



26.5 



28 



23.5 



23.5 



28.5 



28.5 



28 



29 



27 

 26 



28 

 26 

 28 

 30 

 26 

 26 

 26 

 26 



0. 9675 

 .7650 



.8300 

 .6450 

 .8700 

 .8850 

 .8650 

 .7800 

 .7800 

 .6900 



0. 8770 



Aramon X Rupestris Ganzin 

 No. 1. 



.8255 

 .8250 





. 7500 



MourvedreX Rupestris No. 1202. . 



.7575 

 .9450 



Riparia X Rupestris No. 3309 



.8250 

 .8550 



Salt Creek 



.8175 



Solonis X Riparia No. 1616 



.8325 





10.2 



21 



6.95 



18.525 



27.4 



26.9 



. 80775 



.8310 







The significance of the data in the various columns of Table III is 

 made clear by the following explanation : 



Column 1 shows the name of the variety and of the stocks upon which it was 

 grafted. 



Column 2 shows the congeniality existing between the resistant stock and the 

 variety grown upon it, expressed in the form of a percentage rating on a scale 

 in which the growth of the variety when not grafted but growing as an entire 

 plant on its own roots, under conditions to which it is well adapted, is taken 

 as the standard of excellence, 100 per cent. The congeniality percentages there- 

 fore represent the behavior of the Panariti variety when grafted on the several 

 stocks in the Fresno Experiment Vineyard expressed in terms that permit com- 



