Juli/ 2, ims.] Agricultural Gazette of N.S.W. 553 



Some Results of the Experiments with European 

 Grape Vines Grafted on Phylloxera- 

 resistant Stocks. 



At the Viticultukal Station, Howlong. 



M. BLUNNO. 



The accompanying table? refer to the results obtaiiied from some experiments 

 carried out at the Viticultural Station, Howlong, where a number of the 

 principal varieties of wine-grapes, a few table-grapes, and three raisin-grapes- 

 are grafted on various phylloxera-resistant stocks. 



Each variety grafted on a stock has the same corresjjonding number of 

 vines along the same row, which are not grafted and are designated in these 

 tables " Witness." Therefore, the word •' Aleatico " in the table of Rupestris 

 du Lot means Aleatico grafted on that stock, while the following word 

 " Witness " means the same Aleatico, l)ut not grafted. This disposition I 

 adopted in planning out the experimental plots in order to test the affinity of 

 a given variety with a given resistant stock. By affinity is meant the 

 readiness with which the vine and the stock graft and form a whole, having 

 the root system resistant enough to d^ify the attacks of phylloxera, and the 

 portion above ground representing any fruit-bearing variety, Ije it Aleatico, 

 Cabernet, Syrah, &c. 



The readiness to take the graft is not the first and only indication of 

 affinity, otherwise it could be settled a year or two after the graft. Affinity 

 means the mutual influence between stock and s-cion, whei'eby vines thus 

 grafted not <jnly form a good strong plant, but also bear good fruit for 

 quantity and quality for quite a number of years, just like the same non- 

 resistant vine not grafted. 



The vine stocks experimented with ar.^ planted in soils of different texture, 

 and as suitable to each stock as it was possible to tind in a limited area of 60 

 acres. The ground in such area varies from j^ure sand to very stiff clay, but 

 no one could expect every plot to be planted in a soil typical and representing 

 the desiderata of texture, fertility, and moisture required by every kind of 

 stock, urdess we nuide up the soil of 4 or 5 acres to a depth of i or 5 feet. 



Tlie Hiparias are in a sandy soil, l)ut the soil towards the end of that ])lot 

 gets a little bit stiff for them, also the Riparia x Rupestris, 3,306, Riparia x 

 Rupestris, 3,309, and Riparia Rupestris, 101^, are in ground inclined to 

 be too heavy for them ; tiie others are in soils ap})roaching more to their 

 requirements. 



