Research Article
Efficacy of a Phosphate-Charged Soil Material in Supplying Phosphate for Plant Growth in Soilless Root Media
Figure 3
The pH of root media amended with no soil (control) and six soil treatment combinations containing 5 or 10% soil material (v : v) charged with 0, 2.2, or 6.5 mg·g−1 phosphate-P during the (a) first, (b) second, and (c) third of three successive tomato seedling crops. Bars indicate ± SE (). Lines connecting data points were included to aid in visualizing trends in the data.
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