Download or read book Future Challenges and Opportunities for Agricultural R & D in the Semi-arid Tropics written by James G. Ryan and published by . This book was released on 2001 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews past trends, summarizes major constraints to income growth, food security, poverty alleviation, and environmental sustainability, and identifies future research and development strategies and priorities for the semi-arid tropics. Focuses on sub-Saharan Africa and South Asia.