Rootstock Chart

– Findings noted by the UC Davis Viticulture & Enology Department

039-16HLHLLLHPoor on coarse, sand soils due to low root knot nematode tolerance. Tolerant of fanleaf virus.
101-14HM-HMLMML-ML-MMoist, clay soils, tolerates wet soils. Avoid clay soils that crack.
1103PHM-HLM-HM-HMMM-HAdapted to drought and saline soils
110RHLLHL-MMMM-HHillside, gravelly and acid soils. Develops slowly in wet soils. Slow to establish. Sensitive to Latent Virus.
140RHL-MLHLHM-HHAdapted to drought and acid soils. Does poorly in non-irrigated, low K soils
16-16CHHLMML-MMBest on fertile, med. to fine textured soils; tolerates acid soils. Poor on infertile, sandy soil.
3309CHLLL-MML-ML-ML-MDeep soils. Sensitive to latent viruses; tolerant of cold injury
420AHMLL-MMLM-HLFine textured, fertile soils. Scions tend to overbear when young. Maintains scion. Growth into late season.
5BBHMMMLMM-HMMoist, clay soils. Susceptible to phytophthora root rot; adapted to high vigor varieties
Riparia GloireHMMLLMLLDeep, well-drained, moist soils, early maturation; scions tend to overbear
5CHMMLMMML-MMoist, clay soils, avoid clay soild that crack.
SchwarzmannHMHMMM-HMMMoist, deep soils.
SO4HMMMML-MML-MMoist, clay soils, high K uptake. Noted as a cool region rootstock.
St. George HLLM-HL-MM-HMM-HDeep & gravelly soils; K deficiency. Fruit set problems w/ some scions, latent virus tolerant

L – Low
M – Medium
H -High