THE RELATIONSHIP BETWEEN SOIL pH, ORGANIC MATTER, AVAILABLE PHOSPHORUS, EXCHANGEABLE POTASSIUM, CALCIUM, MAGNESIUM, AND NINE ELEMENTS IN THE MAIZE TISSUE

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Abstract
Simple and multiple correlation coefficient was run between soil pH, organic matter, available P, exchange K, Ca, Mg and nine other elements in the maize tissue sampled from four different soil zones of the Western and Lagos States of Nigeria. The results indicate that soil organic matter plays such a vital role that most of the soil nutrients are affected by its variability. When the soil has just come out of fallow, the soil organic matter, available P, exchangeable K, Ca, and Mg are very high. All these elements are leached down together as cultivation continues. There is an antagonism between exchangeable Mg, exchangeable Ca, and K. Since soil organic matter seems to furnish most of the exchange sites, it is not surprising that all the elements are significantly correlated with it. It therefore follows that the concentration, rate of release, and the amount of both major and micronutrients absorbed by plants are dictated by the level of soil organic matter. Simple and multiple correlation coefficient was run between soil pH, organic matter, available P, exchange K, Ca, Mg and nine other elements in the maize tissue sampled from four different soil zones of the Western and Lagos States of Nigeria. The results indicate that soil organic matter plays such a vital role that most of the soil nutrients are affected by its variability. When the soil has just come out of fallow, the soil organic matter, available P, exchangeable K, Ca, and Mg are very high. All these elements are leached down together as cultivation continues. There is an antagonism between exchangeable Mg, exchangeable Ca, and K. Since soil organic matter seems to furnish most of the exchange sites, it is not surprising that all the elements are significantly correlated with it. It therefore follows that the concentration, rate of release, and the amount of both major and micronutrients absorbed by plants are dictated by the level of soil organic matter. © Williams & Wilkins 1973. All Rights Reserved.

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