dr dyno keatinge, director general, avrdc – the world vegetable center
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DR. J.D.H. KEATINGE DIRECTOR GENERAL
AVRDC -‐ THE WORLD VEGETABLE CENTER
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2008
2!
Association of International Research and Development Centers for Agriculture (AIRCA)
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Coping with Increasing Climate Uncertainty: Flooding
Excess soil moisture damages tomato plants leading to dramatic loss of yield
Disease and Fruit Loss
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• Grafting: improved rootstocks to manage bacterial wilt and flooding in Solanaceous crops
BW: Non-‐gra7ed vs gra7ed tomato
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Rubber tubing: Better for grafting than traditional clips as it falls off naturally as the plant grows
Grafted plants prove successful in Qatar!
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Crop Protection from soil borne diseases through grafting Protects a variety with good yield and quality but is otherwise suscepGble to soil-‐borne diseases or flooding by graIing onto a rootstock with desirable resistance
Bacterial Wilt Very Severe Soil Borne Disease
Rootstock
Scion
Graft
Rubber tube
Diagonal cut
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GraIing tomato onto eggplant rootstocks using rubber tubing in Bangladesh
SEE AVRDC on six minute Youtube film:- “How to graft tomato and eggplant: Tube splice method”
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Several successful women’s grafting cooperatives trained by AVRDC in Jessore, Bangladesh
Technology well suited to the
landless poor
Grafted seedlings sell for about 5 times the price of normal seedlings and have
shown themselves to be effective against bacterial wilt in Jessore
Graft recovery chamber with high humidity
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Parameter Lam Dong province
Yield (t/ha) 73 Adoption rate by tomato farmers 100% Total area under tomato production (ha, 2011) 6,388.0
Contribution of grafting ($million/yr) 9.3
Economic impact of AVRDC tomato grafting technique in Lam Dong province, Vietnam
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What’s next: Can tomatoes and eggplants grow on trees? Solanum torvum (Prickly nightshade) as a new grafting
rootstock for eggplants and other Solanaceous spp.
• Highly resistant to common fungal and bacterial wilts and root knot nematodes. • Vigorous growth supports higher yield. • Drought tolerant. • Locally available root stocks (India, Thailand) • Easy to produce as root-stocks. • Perennial and supports longer duration. • Berries already used as local vegetable in Thai Green Curry and Tamil Nadu cuisine.
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AVRDC Bringing Prosperity for the Poor and Health for All