Rootstock Varieties

Rootstocks

Rootstock Varieties

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  1. Nemaguard

    (Prunus persica) peach seedling.
    Use with peaches, nectarines, plums, prunes, almonds, and apricots. Root-knot nematode resistant, vigorous, strong tree. Susceptible to root-lesion nematodes prefers sandy soil, susceptible to oak root fungus and bacterial canker, prunes subject to brown line complex.
  2. Nemared

    (Prunus persica) peach seedling.
    Use with peaches, nectarines, plums, prunes, almonds, and apricots. Root-knot nematode resistant grows better in well-drained, sandy soils. Anchorage is good. Susceptible to root-lesion nematodes, oak root fungus, bacterial canker and crown rot. Sensitive to wet soil conditions.
  3. Lovell

    (Prunus persica) peach seedling.
    Use with peaches, nectarines, plums, prunes, almonds, and apricots. Slightly more resistant to wet conditions than Nemaguard but prefers well-drained soils, slightly precocious compared to Nemaguard, slightly more resistant to bacterial canker than Nemaguard. Susceptible to root-knot and root-lesion nematodes and to oak-root fungus, somewhat susceptible to bacterial canker, prunes subject to brown line complex.
  4. Hansen 536*

    (interspecific almond & peach)
    Use with almonds and peaches. Extremely vigorous, immune to root-knot nematode, deep-rooted and drought tolerant, tolerant of calcareous soil conditions. Intolerant of shallow or poorly drained soil, trees may be excessively vigorous on good soil, susceptible to crown rot.
  5. Cadaman™*

    (Prunus persica X Prunus davidiana)
    Use with almonds, peaches and nectarines. Vigorous peach rootstock for peach, nectarine and almond. High yielding and larger fruit size. Tolerates root asphyxia and iron induced chlorosis. Resistant to root- knot nematode. Not good in heavy, wet soils. Prefers warm, well-drained soils. Not resistant to lesion nematode.
  6. Cornerstone*

    (PP#21,248) Interspecific almond & peach.
    Use with almonds, peaches and nectarines. Cornerstone is a deep-rooting red leaf rootstock. It has better phytopthora resistant than Hansen 536 and is more drought tolerant than Nemaguard. The rootstock has increased fruit size on some varieties of peaches. Cornerstone is tolerant of high pH soil and is resistant to iron induced chlorosis. The rootstocks will tolerate heavier soils and is more resistant to crown gall than most almond X peach hybrids. Burchell Nursery is the exclusive distributor of this rootstock. A royalty of $.50 per tree will be assessed to all orders.
  7. Controller 5*

    (PP#15,228) Interspecific peach-plum hybrid rootstock.
    Use with peaches and nectarines. A dwarfing rootstock that will reduce the size of the scion cultivar to between 50 and 60% of the size of trees growing on Nemaguard rootstock. This increases the efficiency of various cultural operations by reducing the need for field workers to use tall ladders. Moderately susceptible to root-knot nematode and are probably not inherently resistant to numerous soil pathogens.
  8. Controller 9*

    (PP#15,225) Interspecific peach-plum hybrid rootstock.
    Use with peaches and nectarines. A dwarfing rootstock that will reduce the size of the scion cultivar by 90% of the size of trees growing on Nemaguard rootstock. This increases the efficiency of various cultural operations by reducing the need for field workers to use tall ladders. Moderately susceptible to root-knot nematode and are probably not inherently resistant to numerous soil pathogens.
  9. Guardian®*

    (BY520-9) (Prunus persica) Peach seedling.
    Use with almonds, peaches, nectarines, plums, prunes and apricots. Resistant to ring nematode, a leading cause of Peach Tree Short Life (PTSL). Resistant to root-knot nematodes. Fairly vigorous. Used mainly in the Southeast United States. Unknown adaptability in other regions.
  10. Florda Guard

    (Prunus persica) Peach seedling.
    Use with peaches, nectarines, plums and apricots. A low chill peach rootstock that causes early bud break of 3–5 days in some years. Resistant to root-knot nematodes. Does not tolerate high pH soils.
  11. Plum 26-24

    (plum rooted cutting)
    Use with plums, prunes, apricots and some almonds. Slightly dwarfing, moderately resistant to Phytophthora crown, root rot, and oak root fungus. Tolerates wet soils and is root-knot nematode resistant. Tends to lean. Shallow roots the first few years. Very susceptable to bacterial canker. Incompatible with peaches, nectarine and some almond varieties. Suckers profusely and is susceptible to crown gall.
  12. Plum 29-C

    (plum rooted cutting)
    Use with plums, prunes, apricots and some almonds. Makes a large tree. Immune to root-knot nematode. Tolerates wet soils. Tends to sucker and lean. Some incompatibility with almonds. Prunes subject to brown line on this rootstock. May set a lighter crop than Marianna 26-24. Susceptible to oak root fungus.
  13. M40*

    (plum rooted cutting)
    Use with plums, prunes, apricots and some almonds. A Marianna 26-24 selection that roots deeper and has less suckers. Good in wet soils.
  14. Citation

    (interspecific – peach & plum – rooted cutting)
    Use with apricots, plums, prunes and some peaches and nectarines. Highly compatible with apricot and plum, induces early bearing, very tolerant of water logging, resists root-knot nematode, induces early defoliation, dormancy and hardiness. Susceptible to crown gall and oak root fungus. Peach and nectarine scions lack vigor in young trees. Not compatible with all almond varieties. Same as Marianna 26-24.
  15. Mazzard

    (cherry seedling)
    Use with cherries. More water tolerant than Mahaleb. Cold hardy, resists root-knot nematode, vigorous, moderately resistant to oak root fungus. Slow to bear, large tree prone to root suckering, susceptible to crown gall, bacterial canker and root-lesion nematode. Scion doesn’t show buckskin infection as quickly as on Mahaleb.

* Royalty item

Ripening dates shown are approximate for Fresno and will vary with season and location.

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