Demand-Driven Technologies for Sustainable Maize ... - IITA

134Table 5. Relative grain and stover yield increases at each inorganic fertilizer level.Treatment combination Relative grain yield increase (%) Relative stover yield increase (%)Organic materials type Inorganicfertilizerrate1998 1999 2000 1998 1999 2000Cow dung ¼ opt 141.56 107.95 144.18 145.32 142.15 153.38Cow dung ½ opt 151.46 131.93 126.25 165.40 118.90 128.49Cow dung opt 137.71 136.75 125.24 118.00 128.70 140.83Maize stover ¼ opt 81.65 84.00 99.77 82.09 88.65 80.27Maize stover ½ opt 102.83 106.90 97.89 97.55 67.28 77.39Maize stover opt 97.78 102.13 99.11 100.79 105.27 108.72M. pruriens ¼ opt 167.26 113.89 158.98 143.81 182.16 164.61M. pruriens ½ opt 153.57 109.63 121.31 157.58 116.36 126.48M. pruriens opt 123.48 130.94 117.79 107.70 126.68 136.41L. leucocephala ¼ opt 139.66 109.51 129.86 111.37 134.38 133.11L. leucocephala ½ opt 126.82 110.89 117.89 166.65 111.43 115.19L. leucocephala opt 114.16 112.63 113.32 119.09 109.76 123.76