1103 Paulsen is a V. berlandieri x V. rupestris hybrid used as a rootstock. Dr Richard Smart (2015, p.628) says it was ‘bred in 1896 by Federico Paulsen, the director of an American vine nursery in Sicily. It is regarded as a drought-tolerant rootstock with high phylloxera tolerance and moderate nematode resistance. Lime tolerance is intermediate [well adapted to clay-limestone soils], and vigour moderate to high [suited to low fertility sites, tolerates excess humidity]. It is welcomed by nurserymen as being easy to graft and root.’ It is also somewhat tolerant of salinity.

Other V. Berlandieri x V. Rupestris rootstocks: 110 Richter. | 140 Ruggeri. | 775 Paulsen. | 99 Richter.

Bibliography

Dr Richard Smart in the Oxford Companion to Wine 4th edition ed. Jancis Robinson MW and Julia Harding MW (Oxford University Press, 2015, p.628.