EVALUATION OF FERTILITY OF LOWLAND SOILS FROM SOUSA-PB MUNICIPALITY

Lúcia Helena Garófalo Chaves Ivonete Berto Menino Ivaldo Antonio de Araújo Iêde de Brito Chaves About the authors

ABSTRACT

Due to importance of the Vertisols, eutrophic Alluvial soil and eutrophic Red Yellow Podzolic soil from the neighbouring areas around Coremas/Sousa canal, State of Paraíba, Brazil, in view of the agricultural activities to be developed in these regions with the use of irrigation, the objective of this study was to assess fertility level of these soils. Soil samples of surface and subsurface horizon of 66 soil profiles were analysed for chemical properties. In general, soil samples presented moderate acid to alkaline pH values, high values of Ca++ Mg++, values of K+ and P ranged from low to high, values of CEC ranged from moderate to high and low values of organic matter. The study revealed salinity (ECse>4 dS.m-1) and sodicity (ESP> 8%) problems in approximately 19% and 52% of the area studied, respectively.

Key words:
lowland soils; fertility; salinity

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