Plants were harvested after 4-weeks growth. Shoots were cut at the soil surface, washed with deionized water, dried at 70 C for 48 h, and then weighed. Roots were taken from soils by gentle sieving for further measurements.
Plants were harvested after 4-weeks growth.Shoots were cut at the soil surface, washed with deionized water,dried at 70 C for 48 h, and then weighed. Roots were taken fromsoils by gentle sieving for further measurements.