Residual Effect of Long Term Application of Organic and Mineral Fertilizers on Selected Chemical Properties of a Savanna Alfisol  

作　　者：A. A. Yusuf R. Abaidoo 

机构地区：[1]Soil Science Department, Institute for Agricultural Research, Ahmadu Bello University, Zaria, P. hl.B. 1044, Samaru, Kaduna State, Nigeria [2]International Institute of Tropical Agriculture (IITA), P.M.B. 5320, Ibadan, Nigeria

出　　处：《Journal of Agricultural Science and Technology(A)》2011年第1X期106-110,共5页农业科学与技术（A）

摘　　要：The residual effect of organic and mineral fertilizers on selected chemical properties of an Alfisol in the long term soil fertility trial established in 1950 at Samaru, Nigerian savanna was assessed. The trial was left fallow for fourteen years due to lack of funds. Topsoil was collected from plots that received three levels of cow dung （D）, nitrogen （N） and phosphorus （P） in all possible combinations. The soils were analyzed for selected chemical properties. Except for significant effect of applied P on available P, sole application of cow dung, N or P had no significant effect on all the measured soil properties. The interaction of D and P significantly affected the mean values of exchangeable Ca, Mg, K and ECEC in the range of 1.12-1.96, 0.62-1.11, 0.37-0.64 and 2.82-4.11 cmol/kg respectively. The most important results were the ability of the plot that received neither D nor P to significantly increase these parameters than the plots that received only one of the treatments. The results show that the fallow period has changed the effects of application of organic and mineral fertilizers on the soil chemical properties under continuous cultivation by modifying them towards those of a native savanna Alfisol.

关 键 词：ALFISOL chemical properties TALLOW LONG-TERM mineral fertilizer organic fertilizer 

分 类 号：S714.2[农业科学—林学] U448.22[建筑科学—桥梁与隧道工程]