Mi 
CURRANT-GRAPE GROWING. 1S} 
with canes ringed, and two were vines with trunks ringed. All 
these vines were trained to stakes. 
Table I]I.—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 stackes at the Fresno Experiment Vineyard of the Department of 
Agriculture in California for a period of 10 years, together acith fruiting 
results in 1917 and 1918. 
c Range of dates in the 10-year period. 
Name of the variety and of the | cp; 
stock upon which it was grown. am E 
: AULY-| Growth starting. | Blooming. Fruit ripening. 
1 2 3 4 5) 
Panariti variety: | 
Adobe ciate 425555 ee 89 | Mar. 2 to Mar. 28....| May 2 to May 25..-.-.| July 20to Sept. 2. 
Aramon X Rupestris Ganzin 96 | Mar. 1to Apr. 1...-- May 6 to May 28-....| July 15 to Sept. 15. 
No. 1. 
MogwRidges == eae oe 93 | Mar. 6 to Mar. 26....| May 1 to May 22. ...) July 15 to Sept. 10. 
MenOite s2e— ee 86 | Mar.2 to Mar. 27.....| May 1 to May 20. ...| July 15 to Sept. 5. 
Mourvedre X Rupestris No. 92 | Mar.4to Apr. 1...-. May 5 to May 20. ...| July 15 to Sept. 12. 
1202. | 
Riparia Gloire.............-.| 89 | Mar. 4 to Mar. 26....| May 2 to May 20. .-..| July 22 to Sept. 10. 
Riparia X Rupestris No.3309 §5 | Mar. 4 to Mar. 27....|.:... GO= sec as July 15 to Sept. 16. 
Rupestris St. George-....--- 95 | Mar. 5 to Mar. 27.._.| May 2 to May 23-...| July 15 to Sept. 14. 
Nat Greckes= 5 cease eae 85 | Mar. 1 to Mar. 26....| May 1 to May 20. .-..| July 15 to Sept. 15. 
Solonis X Riparia No. 1616..| 92 | Mar. 5 to Mar. 28....| May 2 to May 20....| July 15 to Sept. 16. 
Yield of fruit (pounds). 
Sugar content Acid as tartaric 
: (Balling scale). (rs aa 100 
Name of the variety and of the stock In 1917. In 1918. Dee 
upon which it was grown. 
Check |Ringed | Check |Ringed In In In In 
vines. | vines. | vines. | Vines. | 1917, 1918. 1917, 1918, 
1 6 7 8 | 9 10 11 12 13 
i- 
Panariti variety: 
INGO OOAC TPN sae Seek ae ee Us® 27.25 7.5 30.5 30.5 27 0.9675 0.877 
Aramon X Rupestris Ganzin 21 SON ZO eel! 20. 25 28 26 7650 8255 
0.1. 
DO eR EG see se 3 12 3 22.5 26.5 | 28 . 8300 8250 
CHO See ea a eee ee Le 13.25 2 10. 25 28 26 . 6450 7500 
Mourvedre X Rupestris No. 1202.. 8 19.5 es 4) BS 5) PEE) 28 . 8700 7575 
Riparia Gloire...... PE Sra es SE RE 5 10.5 2 gl m2385 30 - 8850 9450 
RipariaX Rupestris No. 3309. ..-.- 17 305255 [= 20 28.5 28.5 26 - 8650 8250 
Rupestris St. George-........... Gabe |albad 20.5 28.5 26 . 7800 8550 
Salfi@recke spew eee 8 19.25 155 1525 28 26 - 7800 81 io 
Solonis X Riparia No.1616.,...-. 24.5 | 26.25 |} 19 16 29 26 6900 8325 
IAVICTAS Cs See es a nce 10.2 21 6.95 | 18.525 27.4 26.9 . 80775 -8310 
The significance of the data in the various columns of Table IIT 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- 
