Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 21 Issue 6

Figure 5: Annual Maximum Temperature Table 2: Rainfall and Yam Yields S/N Year Annual Rainfall Yield (Mt/Ha) 1. 2001 1414.1 16.90 2. 2002 1192.7 14.52 3. 2003 1406.8 15.80 4. 2004 1305 16.23 5. 2005 1290.7 19.60 6. 2006 1319.9 21.69 7. 2007 1595.7 18.31 8. 2008 1138 20.21 9. 2009 1595.7 21.56 10. 2010 1322 21.69 11. 2011 1253.6 19.80 12. 2012 1324.7 20.46 13. 2013 1259 19.50 14. 2014 1332 19.43 15. 2015 1261 19.51 Total = 285.21 Culled: NIMET (2001-2015), 2018 Table 3: Yam Yield, Production and Land Area (2001-2015) S/N Area (000ha) Years Yield (Mt/Ha) Production (000mt) 16. 79.48 2001 16.90 1343.21 17. 62.00 2002 14.52 900.00 18. 61.75 2003 15.80 975.66 19. 67.79 2004 16.23 1235.74 20. 68.67 2005 19.60 1315.64 21. 76.49 2006 21.69 1657.23 22. 96.85 2007 18.31 1773.39 23. 79.77 2008 20.21 1612.15 24. 95.41 2009 21.56 2057.11 25. 118.46 2010 21.69 2568.99 0 5 10 15 20 25 30 35 40 TEMP. 0 C YEARS Analysis of Rainfall and Temperature Patterns on Yam Yield in Lafia, Nasarawa State, Nigeria 1 Global Journal of Science Frontier Research Volume XXI Issue VI Year 2021 39 ( H ) © 2021 Global Journals Version I