Abstract
The relationship between soil test values and yield response due to fertilization is usually described by response models and would indicate test value where response is expected. Upland rice grain yield was used to define relative yield in terms of yield from control (no fertilizer; or minus nutrient) treatment expressed as percent of complete treatment.
Regression analyses show that soil properties were related to both relative yield definitions. Critical nutrient levels and calibration obtained with Cate and Nelson's technique were indicative for soil nutrients. Although relative yield based on fertilizer and control (no fertilizer) treatments has the advantage that many nutrients can be calibrated at the same time, lower R2 values observed in this study with upland rice mean that it cannot be recommended as replacement to conventional relative yield.
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References
Amon BOE and Adetunji SA (1970) Review of soil fertility investigation in Western Nigeria. Research Report No 55 Ministry of Agriculture and Natural Resources, Ibadan Nigeria
Ayodele O and Agboola A (1985) Calibration of available P in soils derived from derived savannah zone of Western Nigeria. Fert Res 67: 121–129
Bray RH and Kurtz LT (1945) Determination of total, organic and available forms of P in soils. Soil Sci 59: 45–59
Cate RB Jr and Nelson LA (1971) A simple statistical procedure for partitioning soil test correlation data into two classes. Soil Sci Soc Amer Proc 35: 658–659
Corey RB and Schulte ED (1972) Soil testing and soil fertility evaluation. Paper read at Agricultural Research Seminar on Tropical Soil Research, University of Ibadan, 22–26th May 1972
Lombin G and Fayemi AAA (1978) Prospects of magnesium deficiency in soils of Western Nigeria as assessed under field conditions. Trop Agric (Trin) 55: 157–168
Murphy J and Riley JP (1962) A modified single solution method for the determination of P in natural waters. Anal Chim Acta 27: 31–36
Nelson LA and Anderson RL (1977) Partitioning of soil test-crop response probability. In: Peck TR, Cope JT Jr and Whitney DA (eds.) Soil Testing: Correlating and Interpreting the Analytical Results, ASA special Publ 29: 19–38
Obigbesan GO and Agboola AA (1974) Effect of fertilization on the yield of rice, maize and cassava in the rainforest Zone of Western Nigeria., Paper read at CIBC XIV General Assembly of the Int. Center of Fertilizers, Madrid, May 27–29, 1974
Osiname, OA (1981) Soils of Western Nigeria Classification and management practices. In: Pandey ST (ed.) Agronomy Training Manual for Agro-Service Agronomists, NAFPP/IITA, Ibadan, 93–110
Sobulo RA and Osinme OA (1981) Soils and Fertilizer use in Western Nigeria. University of Ife, IAR & T Research Bull 11, p. 13
Walkley A and Black IA (1934) An examination of the Degtajareff method for determining organic matter, and a proposed modification of the chromic acid titration method. Soil Sci 37: 29–38
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Agboola, A., Ayodele, O. Soil test calibration for upland rice in south western Nigeria. Fertilizer Research 14, 227–234 (1987). https://doi.org/10.1007/BF01050667
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DOI: https://doi.org/10.1007/BF01050667