Home About Us Products Hemp Clean Vines Clonal Selections Resources Contact Us IFG Rootstock Chart Please use the search box below to narrow your search by variety or color. Rootstock Protocol 2010 Vitis Parentage Phylloxera Resistance Root Knot Xiphinema Index Drought Wet Soil Salinity Lime Vigor CA/ Entav Cert P10/Classic Comments 039-16 2014 k H L H L L L H CA Yes P10 & Classic Poor on coarse, sand soils due to low root knot nematode tolerance. Tolerant of fanleaf virus. 101-14 Mgt 2015 e H M-H M L M M L-M L-M Both Yes P10 & Classic Moist, clay soils, tolerates wet soils. Avoid clay soils that crack. 1103P 2014 d H M-H L M-H M-H M M MH Both Yes P10 & Classic Adapted to drought and saline soils 110R 2014 d H L L H L-M M M M-H Both Yes P10 & Classic Hillside, gravelly and acid soils. Develops slowly in wet soils. Slow to establish. Sensitive to Latent Virus. 140Ru 2014 d H L-M L H L H M-H H CA Yes P10 Adapted to drought and acid soils. Does poorly in non-irrigated, low K soils 161-49 n/a c H L L L L L M H Both Yes/No Classic Humid, fertile soils. 1616C 2015 g H H L M M L-M M CA Yes P10 Best on fertile, med. to fine textured soils; tolerates acid soils. Poor on infertile, sandy soil. 3309C 2014 e H L L L-M M L-M L-M L-M Both Yes P10 & Classic Deep soils. Sensitive to latent viruses; tolerant of cold injury 420A Mgt 2017 c H M L L-M M L M-H L Both Yes/No P10 & Classic Fine textured, fertile soils. Scions tend to overbear when young. Maintains scion. Growth into late season. 44-53 M 2014 f H L H L-M M-H CA Yes P10 High Mg soils. Readily Mg deficient in low Mg soils. 5BB 2015 c H M M M L M M-H M Both Yes P10 & Classic Moist, clay soils. Susceptible to phytophthora root rot; adapted to high vigor varieties Fercal n/a j H M M M M-H H H Entav Yes Classic Mg deficient soils. Freedom 2015 i L-M2*(revised) H M-H M L L-M M H CA Yes P10 & Classic Sands to sandy loams. Sensitive to latent viruses. GRN-1 (8909-05-AW) 2016 n VH VH VH M T L L M-H CA Yes P10 & Classic Also highly resistant to ring, citrus and lesion nematodes. GRN-2 (9363-16-AW) 2016 o VH VH VH M M M? M L-M CA Yes P10 & Classic Also highly resistant to lesion nematode and moderately resistant to citrus and ring nematode. GRN-3 (9365-43-AW) 2016 p H VH VH M-H M M-H? M-H M+ CA Yes P10 & Classic Also resists citrus and lesion nematodes, but not ring. GRN-4 (9365-85-AW) 2016 GRN-3 sibling H VH VH H M M-H? M-H M-H CA Yes P10 & Classic Also resists citrus and lesion nematodes, low to moderate ring resistance. GRN-5 (9407-14-AW) 2016 q M-H VH VH H L-M M-H? M-H H CA Yes P10 & Classic Also resists citrus and lesion nematodes, moderate ring resistance, moderately difficult to propagate Harmony 2015 i L-M2 *(revised) M-H M-H M L L-M M M-H CA Yes P10 Sandy loams and loamy sands. Riparia Gloire 2015 a H M M L L M L L Both Yes/No P10 & Classic Deep, well-drained, moist soils, early maturation; scions tend to overbear 20 50 100 200 12>>> Adapted from a chart prepared by UC Davis viticulture specialists, faculty and cooperative extension farm advisors. Legend for Vitis Parentage: a - Riparia b - Rupestris c - Berlandieri x riparia d - Berlandieri x rupestris e - Riparia x rupestris f - Riparia x (Condifolia x rupestris) g - Longii x riparia h - Champinii i - 1613 (solonis x Othello) x Dogridge j - Berlandieri x Columbard k - Vinifera x Rotundifolia l - 161-49 x 3309 m - Ramsey x Schwarzman n - Rupestris x Rotundifollia o - (Rufotomentosa x Dogridge x Riparia Glorie) x Riparia Glorie p - (Rufotomentosa x (Dogridge x Riparia Glorie) Champinii c9038)) q - (Ramsey x Riparia Glorie) x Champinii c9021 RATINGS: VL - Very Low L - Low M - Medium H -High VH - Very High T - Tolerant The degree of long term phyloxera resistance is questionable due to the unknown Vitis vinifera parentage of these rootstocks.