## 3 Results and Discussion
### Micromineral Concentrations of Yellow Cassava Roots by Genotype  
The means of the microminerals concentrations of yellow cassava roots (Trial 1) by genotype are shown in Table 6. There were significant differences (\(p\) 0.05) on the levels of minerals that existed amongst the cassava varieties. Genotype 01/1235 (13.033 mg/kg) had the highest Fe concentration compared to the rest of the samples of cassava genotypes investigated. However, the Fe contents \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Genotype**} & **Ca** & **Mg** & **Na** & **K** & **P** & **S** \\ \cline{2-6}  & \multicolumn{6}{c}{**Parameters (mg/kg)**} \\ \hline
00/0028 & 1296.0 cdefgh & 1319.3 bcde & 42.8 cdef & 19,180.0 abcde & 1166.7 bcde & 320.0 abc \\
01/1181 & 1782.0 bc & 1455.7 abc & 54.8 abc & 17,976.7 bcdef & 1173.0 bcde & 263.7 cdefg \\
01/1206 & 1922.3 b & 1108.7 defg & 18.4 f & 23,000.0 a & 1290.3 abc & 206.4 gh \\
279/0474 & 1464.3 bcdef & 1465.7 ab & 35.5 cdef & 20.046.7 abcd & 1460.7 a & 358.0 a \\
99/2987 & 1416.3 bcdefg & 1460.7 ab & 28.8 def & 19,100.0 abcde & 1219.3 abc & 321.2 abc \\
01/1404 & 1550.5 bcdef & 1147.0 bcdefg & 32.9 cdef & 17,461.7 bcdef & 1204.6 abc & 225.5 fgh \\
01/1417 & 2833.3 a & 1679.7 a & 73.9 a & 21,630.0 ab & 892.0 fg & 338.3 ab \\
01/1380 & 1069.7 fgh & 1039.7 efgh & 23.7 ef & 19,016.7 abcde & 1143.7 cdef & 250.4 defgh \\
01/1635 & 1603.0 bcde & 1045.3 gfgh & 45.0 bcdef & 17,506.7 bcdef & 1187.0 bcde & 299.3 bcd \\
01/1659 & 863.3 h & 1238.0 bcdef & 19.6 f & 20,850.0 abc & 1303.7 abc & 292.7 bcd \\
01/1423 & 1151.0 efgh & 857.3 gh & 29.2 def & 18,356.7 abcdef & 930.3 defg & 275.8 cdef \\
01/1560 & 1393.0 cdefg & 1126.7 cdefg & 34.9 cdef & 15,613.3 defg & 884.3 fg & 219.9 fgh \\
99/7558 & 810.0 h & 895.7 gh & 42.7 cdef & 12,680.0 g & 760.0 g & 225.5 fgh \\
01/1296 & 1594.0 bcdef & 1430.0 abcd & 48.8 bcd & 16,063.3 a bed & 763.7 g & 227.8 fgh \\
01/1231 & 1217.3 defgh & 753.7 h & 39.9 cdef & 16,066.7 defg & 1074.7 cdef & 201.9 h \\
01/1551 & 1414.3 bcdefg & 952.0 fgh & 68.1 ab & 14,263.3 fg & 924.0 cfg & 286.7 bcde \\
01/1172 & 914.3 gh & 721.7 h & 28.6 def & 16,513.3 cdefg & 1126.7 cdef & 288.7 bcd \\
91/02324 (check) & 1708.0 bcd & 835.0 gh & 53.0 abcd & 16,123.3 defg & 1438.0 ab & 319.3 abc \\
30,572 (check) & 1446.7 bcdef & 932.3 fgh & 23.8 ef & 14,800.0 efg & 1202.0 abcd & 230.4 efgh \\ \hline \hline \end{tabular} Mean values in the same column with the different letters are significantly different at \(p\) < 0.05. Parameters were analysed in duplicate and expressed in mg/kg.  
\end{table} 
Table 5: Macromineral contents of yellow-fleshed cassava roots (trial Set 2) by genotype. were the lowest in the check genotype 91/02324 (5.637 mg/kg). On the other hand, its concentrations were significantly higher in genotypes 01/1662, 01/1412, and 01/1610 compared to those found in the check genotypes (TME, 91/02324, and 30,572). Although genotypes 01/1662 (24.414 mg/kg), 01/1273 (24.800 mg/kg), and 01/1335 (24.823 mg/kg) had the highest Mn contents, its concentration was found to be the lowest in genotypes 95/03379 (9.544 mg/kg). On the other hand, genotypes 01/1224, 01/1663, 90/01554, 98/2135, 94/0330, 01/1413, 01/1331, 01/1277, and 01/1235 showed significantly higher contents of Mn than all the check genotypes. Genotype 01/1335 (2.698 mg/kg) showed the highest levels of B as compared to the rest of the samples examined. Its concentration was also found to be significantly higher in genotypes 01/1662, 01/1273, 01/1277, 01/1331, 01/1442, 01/1649, 90/01554, and 95/0379. However, the rest of the genotypes showed the least concentrations of B. Genotype 01/1662 (5.504 mg/kg) showed the highest levels of Cu as compared to the rest of the cassava genotypes investigated. However, its contents were the lowest in genotype 01/1235 (1.745 mg/kg). On the other hand, Cu contents were found to be significantly higher in genotype 98/2132. All the genotypes had significant amounts of Co and were significantly the same with the checks.