Evaluation of soil fertility in the coconut producing region of the state of Sergipe Brazil, by means of the microplots technic

Abstract

Thirty one experiments, using the corn plants microplot biological techinique, were conducted to study the fertility status of soils representative for the production of coconuts in the State of Sergipe. The results obtained allowed for the following conclusions: 1. Nitrogen and phosphorus were the nost limiting factors for the growth of the plants. 2. The responses to omiting potassium, calcium, magnesium, sulfur and micronutrients showed great variation in the different areas studied, indicating the need for greater studies. Is is likewise indicated the need to study the effect of dolomitic limestone in the equilibrium between cations in order to better characterize the defficiencies of some nutrients.