Example 5-6: Tillage frequency effect on purple nutsedge tuber production Tillage codes: WE = Weekly (1), BW = Biweekly (2) MO = Monthly (4), ZE = NoTill (12) Total Tillage Initial tuber frequency fresh weight Block count --------------------------------------------- BW <0.25 1 7 BW <0.25 2 2 BW <0.25 3 3 BW <0.25 4 3 BW 0.25-0.50 1 6 BW 0.25-0.50 2 3 BW 0.25-0.50 3 2 BW 0.25-0.50 4 5 BW 0.50-0.75 1 6 BW 0.50-0.75 2 5 BW 0.50-0.75 3 3 BW 0.50-0.75 4 4 BW 0.75-1.00 1 6 BW 0.75-1.00 2 3 BW 0.75-1.00 3 4 BW 0.75-1.00 4 5 MO <0.25 1 13 MO <0.25 2 5 MO <0.25 3 13 MO <0.25 4 8 MO 0.25-0.50 1 21 MO 0.25-0.50 2 19 MO 0.25-0.50 3 16 MO 0.25-0.50 4 16 MO 0.50-0.75 1 32 MO 0.50-0.75 2 25 MO 0.50-0.75 3 29 MO 0.50-0.75 4 38 MO 0.75-1.00 1 84 MO 0.75-1.00 2 72 MO 0.75-1.00 3 43 MO 0.75-1.00 4 40 WE <0.25 1 6 WE <0.25 2 3 WE <0.25 3 4 WE <0.25 4 3 WE 0.25-0.50 1 5 WE 0.25-0.50 2 4 WE 0.25-0.50 3 5 WE 0.25-0.50 4 4 WE 0.50-0.75 1 6 WE 0.50-0.75 2 2 WE 0.50-0.75 3 5 WE 0.50-0.75 4 5 WE 0.75-1.00 1 7 WE 0.75-1.00 2 4 WE 0.75-1.00 3 5 WE 0.75-1.00 4 5 ZE <0.25 1 123 ZE <0.25 2 122 ZE <0.25 3 112 ZE <0.25 4 118 ZE 0.25-0.50 1 121 ZE 0.25-0.50 2 118 ZE 0.25-0.50 3 124 ZE 0.25-0.50 4 119 ZE 0.50-0.75 1 112 ZE 0.50-0.75 2 121 ZE 0.50-0.75 3 128 ZE 0.50-0.75 4 125 ZE 0.75-1.00 1 130 ZE 0.75-1.00 2 124 ZE 0.75-1.00 3 120 ZE 0.75-1.00 4 118