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DR. J.D.H. KEATINGE DIRECTOR GENERAL
AVRDC -‐ THE WORLD VEGETABLE CENTER
2008
2!
Association of International Research and Development Centers for Agriculture (AIRCA)
Coping with Increasing Climate Uncertainty: Flooding
Excess soil moisture damages tomato plants leading to dramatic loss of yield
Disease and Fruit Loss
• Grafting: improved rootstocks to manage bacterial wilt and flooding in Solanaceous crops
BW: Non-‐gra7ed vs gra7ed tomato
Rubber tubing: Better for grafting than traditional clips as it falls off naturally as the plant grows
Grafted plants prove successful in Qatar!
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
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”
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
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
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.
AVRDC Bringing Prosperity for the Poor and Health for All