Journal of Dynamics in Agricultural Research
Available online at http://www.journaldynamics.org/jdar
Vol.4(1), pp.1-9, January 2017
Article ID: JDAR/JDYA15009077
Copyright © 2017
Original Research Paper
Effect of Phosphorus source, Nitrogen Source and Rates on Yield and yield components of Maize (Zea mays L.) in different Soil Types in River Nile State– Sudan
Ezeldeen, Ahmed Banaga Elnowr and Abd Elrahman, Ahmed Mohammed
1Maize Research Program, Damazien Research Station, Agricultural Research Corporation, Sudan.
2Maize Research Program, Agricultural Research Corporation, Wad Medani, Sudan.
*Corresponding Author. E-mail:email@example.com.
Received 9 May, 2016; Accepted 6 July, 2016; Available on-line 12 January, 2017.
An experiment was carried out during two seasons 2008/09 and 2009/10 Hudeiba Research Station Farm, representing moderate fertile “Karu” middle terrace soil and “matara” site representing high terrace poor soil. The two sites are located in the semi- desert climate in River Nile State, Sudan. The objective was to study the effect of phosphorus source, nitrogen source and rate on yield and yield components of maize plants. Treatments consisted of two sources of phosphorus (triple super phosphate (TSP) and diammonium phosphate (DAP), two nitrogen sources (urea and ammonium nitrate) and three N rates, namely, 0.0, 43 and 86 kg N/ha. The design was a split- split- plot Design with three replication P sources as main plots and N sources and rates as split and split- split plots, respectively. The results obtained showed that 1000- kernel weight was significantly affected by P sources in the karu soil type and in the high terrace soil in the second and first season, respectively. Whereas, ear yield was significantly affected by P source in the karu soil type in both seasons and in the high terrace poor soil only in the second season. On the other hand, N source had no significant effect on all measured maize characters except for maize grain yield in the two soil types in 2008 and only in the “Karu” soil in 2009, respectively. The application of nitrogen also resulted in higher number, heavier kernels weight and greater ear yield than the zero N treatments in both soil types. For maize grain yield, the results indicated that ammonium nitrate showed about 9% more grain yield than urea, in the “Karu” soil only during 2009. However, the application of N at the two rates (43 and 86 kg N/ha), irrespective of N source, significantly increased maize grain yields (2255 and 1155 kg/ha) by about 20, 47, 59 and 98 % in both soil types averaged over both seasons than the zero N treatments with significant differences between the two N rates. Generally, the results revealed that significant interaction of P source x N rate and P source x N source in most of the maize characters. In conclusion, the application of N at 43 kg N/ha or 86 kg N/ha, irrespective of N source, resulted in better maize performance and a substantial maize yields increases in both soil types than the zero N treatments with significant differences between N rates in most cases.
Keywords: Maize, Phosphorous, Nitrogen, Source, Rate.