(a) Watson (1975), (b) F.A.O. (1968), (c) Gopalan et. al (1971)
Variety recommended & released officially : SLS - 44
Varieties recommended but not yet released officially
Winged bean can be grown from sea level upto
2000 m in either maha or yala seasons. As a short day plant it has a critical day length of about 12 hours. However, some improved varieties are not sensitive to photoperiod and produce pods throughout the year. Hence these varieties can be cultivated during both maha and yala seasons.
Winged bean can be grown on soil types ranging from sandy to heavy clays. The crop can be grown on alkaline soils (pH=8), but a well-drained sandy loam, rich in organic matter is preferred.
New improved varieties such as SLS - 44,
UPS - 122, etc., can be cultivated during any season of the year.
Major pests & diseases
Free from major pest and diseases in Sri Lanka,
but the following are prevalent.
Pests : Mites, Aphids, Leaf minor, flower borer, pod borer (Heliothis), Root knot
nematode, pod borer (Maruka)
Diseases : False rust, Leaf spot, Mosaic virus, Witches broom
Harvesting & Post-harvest Technology
National average yield : ' 10 t/ha
Research yield : ' 27 t/ha
Economics & Marketing
Winged bean extent & production 5 year period
Mediterranean countries, Tropical Asia and South east Asian countries.
Export market demand
Exported to the middle eastern countries and the Maldives, together with other Beans.
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