Table 1. Effect of mulch treatments on concentration of soil K, and concentration of foliar Fe and Mn.z
TreatmentNutrient concentration
Soil K (ppm)Foliar Fe (ppm)Foliar Mn (ppm)
Grass clippings126 ay112 ab1,453 a
Chipped limbs75 b78 c764 c
Hardwood leaves53 b125 a622 c
Pine straw53 b86b c816 be
Pine bark nuggets43 b125 a1,265 ab
Bermudagrass sod54 b108 abc987 be
Significance
Treatment.0091.0284.0111

  • ↵z Values are means of 12 trees grown at 3 mulch depths: 15, 30, and 45 cm (6, 12, and 18 in.).

  • ↵y Mean separation within each column by LSD at P < 0.05. Values followed by different letters are statistically different.