Determining the Impact of the AM-Mycorrhizosphere on “Dwarf” Sunflower Zn Uptake and Soil-Zn Bioavailability

Table 1

Pre-experimental soil characteristics.

Parameter	Unit	Value (SE)
P*	ppm	20	(0.71)
K^†	ppm	90.2	(0.86)
Mg^†	ppm	214	(5.42)
Organic Matter	%	3.8	(0.25)
Na^†	ppm	58.3	(7.87)
Ca^†	ppm	1646	(250)
CEC K	meq/100 g^‡	0.2	(0)
CEC Mg	meq/100 g	1.8	(0.05)
CEC Ca	meq/100 g	8.2	(1.26)
CEC Na	meq/100 g	0.3	(0.03)
CEC Total	meq/100 g	10.6	(1.36)
Base Saturation K	%	2.3	(0.21)
Base Saturation Mg	%	17.6	(1.50)
Base Saturation Ca	%	78.1	(1.67)
Base Saturation Na	%	2	(0.50)

^∗NaHCO₃ Extractable;
^†NH₄ Acetate Extractable;
^‡milli-equivalent per 100 g