Fertility Studies on a Sandy Loam in Semi-Arid Tanzania
- 1 January 1970
- journal article
- research article
- Published by Cambridge University Press (CUP) in Experimental Agriculture
- Vol. 6 (1) , 1-12
- https://doi.org/10.1017/s001447970000586x
Abstract
N and P fertilizers applied to maize had considerable effects over a five-year period, especially when both were given. Initial applications of 47 lb/acre/P2O5with annual dressings of 58 lb N, produced a mean yield increase of 55 per cent above the control. K gave little response in the first three years, but thereafter became more important. 1120 lb ammonium sulphate nitrate caused striking reductions in soil pH, Ca, Mg, K, total and organic P but increases in exch. Mn and soluble P. 112 lb double superphosphate increased the total and organic P and 65 lb K2O reduced organic P. Organic carbon suffered a mean loss of 33 per cent over five years. Recommendations are made regarding P2O5, N and K on this soil.Keywords
This publication has 2 references indexed in Scilit:
- Effects of Time of Nitrogen Application on Yield of Maize in the TropicsExperimental Agriculture, 1966
- Rainfall Conservation and The Yields Of Sorghum and Groundnuts in Northern NigeriaExperimental Agriculture, 1966