Effect of nitrogen and zinc plus copper on sugarcane (saccharum spp) plant crop in Guneid and Assalaya Sugar Estates, in Central Sudan
2010
Mukhtar, S.A., Sugarcane Research Center, Khartoum (Sudan) | Adam, A.I., University of Gezira, Wad Medani (Sudan). Faculty of Agricultural Sciences | Hamad, M.E., University of Gezira, Wad Medani (Sudan). Faculty of Agricultural Sciences
Sugarcane cultivation started in Sudan in the early 1960s, Since then it has been expanding consliderably, Suarcane is grown mainly in the central clay plain (Vertisols) of Sudan which are characterized by moderate chemical fertility, high contents of smectitic clay, high pH values, low N and organic carbon contents, Nitrogen content of these soils ranges from 0,03 to 0,045% (Idris, 2001), Likewise, these Vertisols are low in available P, Fe, Mn, Zn, and Cu. The diethylene triamine penta acetic acid (DTPA) available Cu and Zn for the 0-30 cm soil depth at Guneid and Assalaya locations ranges from 0.34 to 0.4B and 0,17 to 0,23 mg kgE1 soil, respectively (Elhagwa, 2000). The poor or lack of response of the plant cane (PC) to N application was reported by several workers (Ali, 2003), In this regard, the application of N coupled with Zn plus Cu may prove to be more beneficial to sugarcane because in the past only N, and more recently N and phosphorus fertilizers were added to the sugarcane fields in Sudan. The objective of this study was to investigate the response of sugarcane to different rates of nitrogen alone or in combination with Zn plus Cu. The soil of the two experimental locations (Guneid and Assalaya) pelong to Remaitab soil series and, therfore, they are more or less similar in their physical and chemical characteristics, they were classified as Haplusterts, fine smectitic, isohyperthermic (Soil Survey Staff, 1999)
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