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

133Table 4. Relative grain and stover yields at each inorganic fertilizer level.Treatment combination Relative grain yield (%) Relative stover yield (%)Organic materialstypeInorganic fertilizerrate1998 1999 2000 1998 1999 2000Cow dung 0 410.68 552.14 629.94 271.11 294.40 261.79Cow dung ¼ opt 127.00 106.53 137.15 128.87 126.60 133.74Cow dung ½ opt 140.92 128.31 123.44 145.61 114.54 121.59Cow dung opt 132.64 134.08 123.12 114.72 123.45 132.47Maize stover 0 166.27 352.62 319.45 136.93 156.79 137.60Maize stover ¼ opt 86.47 86.09 99.75 88.38 92.09 87.36Maize stover ½ opt 101.56 106.06 98.15 97.88 74.33 82.63Maize stover opt 97.57 101.98 99.21 100.37 104.18 106.98M. pruriens 0 373.83 550.34 556.67 253.95 285.77 257.16M. pruriens ¼ opt 146.31 111.55 149.37 128.20 150.25 140.43M. pruriens ½ opt 143.42 108.54 119.10 140.24 112.45 119.82M. pruriens opt 120.81 128.63 116.19 106.39 120.99 128.80L. leucocephala 0 275.06 418.56 343.93 161.56 172.96 167.61L. leucocephala ¼ opt 125.77 107.76 124.74 107.52 121.36 120.95L. leucocephala ½ opt 122.84 109.55 116.02 146.39 108.97 111.38L. leucocephala opt 111.96 111.72 111.83 115.43 107.95 118.84