Research Article

Influence of Soil Nutrients, Tree Age, and Sandalwood Provenances on Sandalwood Oil Yield and Quality

Table 2

Soil chemical properties variation in all the study sites.

SitespHEC (ms/cm)%C%NP (ppm)K (ppm)Mg (ppm)Ca (ppm)Zn (ppm)Mn (ppm)Fe (ppm)Cu (ppm)

Baringo5.48 ± 0.13d0.0101 ± 0.056b4.56 ± 1.15bc0.36 ± 0.11bc6.33 ± 1.52c997.45 ± 210.48b556.23 ± 37.97bc2305.07 ± 525.74bcde20.36 ± 3.77b496.74 ± 229.53abc274.69 ± 56.34ab0.67 ± 0.33d
Chyulu7.11 ± 0.33ab0.545 ± 0.488a8.12 ± 2.59a1.04 ± 0.44a81 ± 31.96b631.98 ± 180.78de710.54 ± 399.91abc6818.24 ± 155.92a43.63 ± 7.37a39.77 ± 1.348d345.38 ± 159.79a7.53 ± 3.01bc
Homabay7.64 ± 0.23a0.159 ± 0.027b7.19 ± 2.26ab0.66 ± 0.23b114.00 ± 11.35a1294.49 ± 29.83a675.73 ± 47.14abc5200.10 ± 250.39a20.07 ± 2.439.43 ± 4.03cde518.46 ± 187.84abc247.47 ± 44.93ab16.37 ± 3.38a
Kitui6.67 ± 0.44bc0.330 ± 0.137ab2.64 ± 0.40cd0.12 ± 0.057.60 ± 0.89c290.62 ± 161.95f463.32 ± 174.59c2690.06 ± bcde9.43 ± 4.03cde110.41 ± 53.76d164.01 ± 38.28bc5.59 ± 2.96bcd
Loita6.61 ± 0.96cd0.0108 ± 0.002b4.90 ± 2.98bc0.38 ± 0.379.6 ± 3.05c960.61 ± 2.37bc575.74 ± 124.75bc3132.99 ± 1747.52bcd18.13 ± 5.94bc824.41 ± 374.62a213.24 ± 28.24abc4.63 ± 1.57cd
Maralal5.89 ± 0.08cd0.070 ± 0.001b1.15 ± 1.10d0.23 ± 0.0612 ± 5.68c971.54 ± 178.90bc954.26 ± 504.33ab2641.02 ± 704.14bcde1.00 ± 0.00e482.41 ± 189.04abc235.01 ± 59.28ab0.52 ± 0.08d
Marsabit6.56 ± 0.20bc0.102 ± 0.052b3.32 ± 1.31cd0.31 ± 0.09bc14.00 ± 8.57c612.57 ± 258.20de1059.73 ± 143.32a3588.50 ± 658.41a14.11 ± 11.99bcd803.12 ± 196.02a209.39 ± 13.73abc10.07 ± 5.82b
Mbooni6.79 ± 0.27b0.109 ± 0.042b1.47 ± 1.31d0.20 ± 0.25c8.5 ± 6.02c600.49 ± 90.63de676.08 ± 357.48abc1779.64 ± 984.91de3.22 ± 2.67e17.33 ± 7.13bc175.54 ± 174.59cd156.78 ± 140.43bc1.06 ± 0.45d3.67 ± 1.04cd
Murang’a6.78 ± 0.23b0.138 ± 0.036b3.37 ± 0.59cd0.30 ± 0.28bc4.66 ± 1.15c670.44 ± 149.04cde757.06 ± 188.99abc2566.27 ± 539.96bcde17.33 ± 7.13bc356.39 ± 185.17bcd170.16 ± 75.29bc3.67 ± 1.04cd
Namanga6.55 ± 0.03bc0.066 ± 0.012 b1.49 ± 0.44d0.03 ± 0.04c3.66 ± 1.52c130.27 ± 124.35f303.94 ± 18.13c1366.26 ± 195.63e7.30 ± 2.89de40.29 ± 8.13d55.63 ± 14.46c2.36 ± 0.41cd
Narosura5.97 ± 0.82cd0.102 ± 0.33 b4.96 ± 2.51bc0.35 ± 0.06bc8.00 ± 3.91c894.25 ± 342.68bcd552.37 ± 229.67bc2032.26 ± 900.52cde16.55 ± 1.06bcd648.41 ± 388.99ab353.77 ± 158.87a4.31 ± 1.57 cd
Ol Donyo Sabuk6.68 ± 0.47bc0.110 ± 0.031 b3.56 ± 0.88c0.32 ± 0.26bc6.25 ± 4.27c371.70 ± 96.91ef1053.24 ± 227.17a3407.80 ± 809.63bc4.42 ± 6.07e559.07 ± 219.08ab212.34 ± 48.03abc18.29 ± 5.46a
f (11, 31) = 5.12, f (11, 31) = 2.90, f (11, 31) = 16.98, f (11, 31) = 5.05, f (11, 31) = 33.95, f (11, 31) = 11.40, f (11, 31) = 3.09, f (11, 31) = 10, f (11, 31) = 14.88, f (11, 31) = 6.29, f (11, 31) = 2.94, f (11, 31) = 12.89,

Values followed by different letters are statistically different according to Duncan’s test.