Response of sugarcane (saccharum spp.) to urea and methods of application in some soils in the central clay plain of Sudan
2009
Mukhtar, S.A., Sugarcane Research Center, Khartoum (Sudan) | Adam, A.I., University of Gezira, Wad Medani (Sudan). Faculty of Agriculture | Ibrahim, A.S., University of Gezira, Wad Medani (Sudan). Faculty of Agriculture | Hamad, M.E., University of Gezira, Wad Medani (Sudan). Faculty of Agriculture
The present experiments were conducted in the seasons 2005/06 and 2006/07 at Guneid, Assalaya and New Halfa Sugar Estates in the central clay plain. The objectives were to investigate the response of sugarcane (plant cane) to different doses of urea (46% N), to splitting the dose and to covering urea by a thin layer of soil. Urea doses were 150 and 225 kg/feddan (one fed. = 0.42 ha). The fertilizer doses were applied either at 45-60 days after planting (full dose) or split into two doses: two thirds at 45-60 days after planting and the other third at the age of five to six months. Covering was also compared with uncovering the fertilizer with a thin layer of soil. This factorial arrangement of treatments was laid out in a randomized complete block design in Guneid and Assalaya for October planting and in Guneid and New HaIfa for June planting. The results revealed that there were no significant differences in cane yield, yield components and quality of the crop of the plant cane between the rates of urea for the October and June plantings. Splitting the dose out yielded the full dose for June planting at New HaIfa only which had a long season that exceeded 17 months. Covering urea insignificantly out yielded the uncovered treatments. The dose 150 kg urea/fed. Proved to be satisfactory for both cane and sugar yields for the crop of the plant cane. Therefore, a dose of 150 kg urea/fed. is recommended for the plant cane crop, and a similar study should be done for ratoon cane
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