Table 5. Changes in phosphorous content and yield affected by different concentrations of citric acid solution

Concentration of citric acid solution (%)	Phosphorous (ppm)	Yields (%)
Control	132.03±0.52^a¹⁾	100±0.00^a
2	90.81±0.39^b	96.87±0.34^b
4	71.80±0.13^c	97.20±0.45^b
6	68.52±0.21^d	97.10±0.37^b
8	58.02±0.47^e	97.21±0.82^b

Values are mean±SD (n=3). Means with the different letters in the same column are significantly different (p<0.05).