EFFECTS OF LAND PREPARATION AND PLANTING METHOD ON ONION (ALLIUM CEPA L.) PRODUCTION IN THE SUDAN GEZIRA

Seeds of the onion cultivars "Nasi", "Shendi Red" and "Dongola White Imp" were planted on ridges and flat by transplanting and direct seeding at the Vegetable Research Farm, Gezira Research Station, Wadi Medani.

Yield data for two seasons indicated that direct seeding was superior over transplanting for all three cultivars.
Planting on flat gave significantly higher yield than planting on ridges.
While direct seeding increased amount of large bulbs as compared to transplanting, land preparation method did not have any effect.
Direct seeding on both flat and ridges significantly increased percentage doubles for the cultivar "Nasi". Transplanting delayed the maturity of the cultivars "Shendi Red" and "Dongola White Imp". Incidence of bolting was increased by direct seeding on ridges and flat for all three cultivars.

V Africa Symposium on Horticultural Crops

M.K. Ahmed, M.S. Hassan

https://doi.org/10.17660/ActaHortic.1978.84.3