Figure 3. Maize yield comparisons for good, actual, normal and poor year estimates in 1993 and 2007 including long-term Chiapas state’s maize yieldaverages

From

Conservation Agriculture as an Alternative for Soil Erosion Control and Crop Production in Steep-slopes Regions Cultivated by Small-scale Farmers in Motozintla, Mexico

R. ROMERO-PEREZGROVAS, S. CHEESMAN

World Journal of Agricultural Research. 2014, 2(6A), 18-24 doi:10.12691/wjar-2-6A-4