554 Agricultural Gazette of N.SJT\ [Ji(I>/ 2, 1908. 



The rdiiipaiittixe crops i<ii' I'tiiii- coiist'cut i \ c yours -1904-1907 — are reported 

 for five out of nine stocks, and it will he seen how they vary, sometimes beiny- 

 in fa\uui- of the witness vine, some others in favoui- of the uraftecl ones. 



For each European xaricty there are fourteen vines not yiafted (witnesses), 

 and fourteen of the same \ariety grafted on ax-ertain stock. The crop borne 

 by each ,<,'roup is caleulat'd at the rafc per acre, taking- o.'^T vines per acre, 

 planted 8 ft. x 10 ft. 'Die results as to (piantity of crop tiom a vine, whether 

 orafted or not, depends a yreat deal on the pruninir. To get results wiili 

 mathematical accui-aey, all the vines expei'inicntcd u|i(in should In- pruned 

 exactly alike, which is an impossibility. Of course, the system a(lo])ted is 

 the same all through, \i/., two bearing canes with spurs, but we know thar, 

 apart from the number of eyes left on each cane, whicli could easily be made 

 equal for every vine, much depends on the position of such buds, on the bend 

 given to the cane on tlie wire, and even a twist, or curve more or less pro- 

 nounced, nearer or farther from the junction with tlie oki wood, will make 

 a difference as to quantity of crop. On i)aper the various vines grafted and 

 not grafted could l)e drawn as to be prune(l exactly alike; in nature we can 

 •only get appi-oxiuiat(dy near to equality, but the difference between apjiroxi- 

 mate e(]ualitv and alisolute equality is sufficient to give a wide range of 

 difiei'ences in ((uantity of crops. The reader, therefore, in scanning these 

 tables, will have to be satisfied with tlie evidence that vines grafted on those 

 nine kinds of phylloxera-resistant stocks, taken all round, crop as well as 

 when they are grown on their own roots, and any variation, some year in 

 favour of the grafted vines, some other in fa\our of the witness vines, is 

 independent of the fact that they are grafted or not. 



Scanty data are to be found about the Sultana, as we found that it does 

 not graft well with the phyllo.xera-resistant s-tocks, althtmgh information 

 received bv one vinegrowei' would show that it does fairlv well on Rupestris 

 Metallica. No information is obtainable on the subject from the home of 

 Sultana, because that is about the oidy \-ine growing country so fai' free from 

 phylloxei-a. 



In the above experiments wine-grapes pre\ail in nundtei-. There are a few 

 table-grapes only. For these, however, there are already the splendid results 

 obtained from the vineyards in the counties of Cumberland and Camden, 

 certifying to the quality of the crop, which is as sweet and of as good 

 appearance as any ever produced on the vines not grafted. Bunches and 

 berries in most cases are bisjger, containing more juice, very sweet, and of 

 good flavour : but when a \ i^oi-ous growing stock like the Ru|ii'stris du Lot, 

 for instance, whieh {)i'efers a loamv soil, with gravel oi' bits of stones, inclined 

 to be dry, is planted in a rich Hat of alluxial soil, loose, deep, and fairly 

 moist, then the vine grafted on it is likely, accoixling to the v:.riety of the 

 scion, to eithei- prod nee wood and leav(\s to the detriment of the crop, or 

 produce an enormous \ield, but tlie grapes are then likely to ripen unevenly. 



