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White Yam

WHITE YAM (Dioscorea rotundata)

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PlantCharacteristics



White yam or African yam is a new crop species of edible yam introduced from Nigeria.

 

Varieties


Sree Subhra: The tuber contains 27-28% dry matter, 21-22% starch and 1.8-2% protein. It is drought tolerant with 9-10 months duration.

Sree Priya: The tuber contains 25-27% dry matter, 19-21% starch and 2-2.5% protein. It is drought tolerant and duration is 9-10 months. It is suitable for intercropping in mature coconut garden and with banana.

Sree Dhanya: It is the first dwarf variety. The tubers have 28-30% dry matter, 22-24% protein and 0.3-0.5% sugar.

SeedsAndCultivation

 

Rapid seed yam production (minisett technique)
In this method clean and healthy yam tubers weighing about 1 kg are cut into cylindrical (disc-like) pieces, each about 5 cm thick. From each such piece, 2-4 small pieces (30 g) could be obtained by cutting the disc longitudinally or along the two perpendicular diameters. Such a piece is called a "minisett". The minisetts are then spread out under light shade for an hour with cut surface facing up before planting them in the nursery seedbeds. The minisett takes 2-3 weeks for sprouting. At this stage, they are transplanted to the main field at a spacing of 50 cm on ridges taken 1 m apart.

 


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