Response of tomato to some fertilization recipes under Gezira conditions
2006
Abu-Sarra, A.F. (Agricultural Research Corporation, Wad Madeani (Sudan). Gezira Research Station) | Ali, E. A. (Agricultural Research Corporation, Wad Madeani (Sudan). Gezira Research Station) | Hashim, A.A. (Agricultural Research Corporation, Wad Madeani (Sudan). Gezira Research Station) | Idris, M.A. (Agricultural Research Corporation, Wad Madeani (Sudan). Gezira Research Station)
Response of tomatoes (Lycopersicon esculentum Mill.) to some fertilization recipes including different sources of soil added nitrogen and foliar sprayings with ADB liquid fertilizer was evaluated in a field experiment on El Remeitab benchmark soil series of Gezira Vertisols, during the 2003-04 and 2004-05 winter seasons. Fertilization recipes varied in their effect on increasing tomato total and marketable yields. Irrespective of nitrogen source, moderate levels of soil added fertilizers(43 kg N/ha) supplemented with four sprayings of ADB at moderate concentration (325 ml/100 litres of water) resulted in similar yield increases as those of the higher nitrogen level (86 kg/ha). At the moderate nitrogen level supplemented with ADB, ASN and AS statistically out-performed NPK and urea. Economically the same two recipes proved to be more cost effective and profitable than all other recipes. Urea, however, at the high nitrogen level produced accepta ble returns at a lower cost. Hence, the three recipes are proposed for recommendation as other fertilization options for tomato growers in the Gezira. Some evidences that ASN slightly depressed the fruit sugar content were discussed as well
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