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Sudan Journal of Agricultural Research

Response of tomato to foliar fertilization and nitrogen forms under Gezira conditions, Sudan


Asim F. Abu-Sarra, Naiem A. Ali and Mustafa A. M. Idris


Abstract

The response of tomatoes (Lycopersicon esculentum Mill.) to some fertilization recipes including different forms 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 winter season of 2003-04 and 2004-05. Fertilization recipes varied in their effect on increasing tomato total yield and irrespective of nitrogen form, recipes with low level 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 standard nitrogen level (86 kg/ha). Among the former, ammonium sulphate nitrate (ASN) and ammonium sulphate (AS) statistically out-performed nitrophoska and urea. Dry matter accumulation, nitrogen, and potassium uptake followed trends similar to that of total yield, whereas the differences for phosphorus uptake were not significant for all fertilizer-receiving treatments and only the control showed significantly lower phosphorus uptake values.
 

Sudan Journal of Agricultural Research Vol. 9 (2007) PP. 41-46