grafting overview for vegetable crops
TRANSCRIPT
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An Overview of Grafting for Vegetable Crops
Andrew MefferdGrowing for Market Magazine
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Grafting has the potential to overcome many production
problems
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A natural way to get more out of your plants
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Healthier plants and higher yields are due to:
• Increased resistance to disease and abiotic stress
• Higher vigor and a bigger root system
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So, why is grafting not as important for other crops yet
as for tomatoes?
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Why grafting works • Plant breeding is a balance of many
different goals• Grafting separates the goals of the
scion from the rootstock
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Rootstocks are the mules of the vegetable world
• Most rootstocks take advantage of interspecific hybrid vigor
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Potential Drawbacks
• Increased cost• Increased labor of grafting• Potential of bad grafts• Can make plants too vigorous• Diminishing returns• No yield boost?
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A quick overview of the grafting process
• Propagation• Cutting and Splicing• Healing• Re-acclimation
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Old-fashioned razor blade
Don’t try this without the paper wrapper!
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Snapped in half
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Solanaceous top grafting- start with a plant like this
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Sever the top at a 60-70 degree angle
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So it looks like this
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Cut your top variety at the same angle and put in a grafting clip
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Put the top on with the slant of the cut visible in the opening of the clip
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This is what a finished top grafted plant should look like
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Solanaceous cleft grafting
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Cut the top off and split the stem
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Cut a top to match and put a clip below the cut
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Insert the top into the rootstock…
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…and push the clip up to secure the graft union.
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Approach graft- nightshades or cucurbits
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Make a downward slanting cut 2/3 of the way through the stem of one plant, and an upward matching cut through the stem of the other plant.
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Clip the plants together and remove the top of the rootstock
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One cotyledon graft- cucurbit family
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Sever the top, including dormant bud, leaving one cotyledon
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Cut the top off the scion below the cotyledons at a matching angle
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Clip the plants together for healing
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Questions?? Thank you!