8. Maps of soil associations, capability classification, irrigability 
classification, major agro-technical limitations and slope classes 
may be an important tool for detailed planning and development and 
management of semi-arid regions if used by extension services of the 
states in northeastern Brazil. 
ACKNOWLEDGMENTS 
The authors are grateful to the National Science Foundation of Brazil 
(CNPQ), the Federal University of Paraiba, Brazil , the University of 
Connecticut,'USA, the German Aerospace Research Establishment, West 
Germany, and the Partners of the Americas for their financial and 
technical support. Scientific Contribution No. 1300 of the Storrs 
Agricultural Experiment Station, The University of Connecticut. 
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