The anaerobic effluent had a SAR of 3.1 meq0.5 L−0.5, while the nitrified reached 2.9 meq0.5 L−0.5. By applying these results to the Ayres and Wescott (2008) water classification diagram, it was found that both effluents would be suitable for plants with good salt tolerance and unsuitable for soils with deficient drainage.
The culture used in this study, R. hybrida “Ambiance”, has low tolerance for soil salinity; however, when evaluating the sodium concentration data shown in Table 2, it is noted that the value found in the effluents used in this study were lower than the limits set, by Crook (1991), for that compound. According to the cited author, when the sodium concentration is greater than 69 mg L−1, there is a contamination risk for the plant, which may promote excessive absorption, which is highly phytotoxic, particularly when the soil moisture is low.
Furthermore, the soil was classified as sandy clay, which presents no drainage deficiency, and with only a slight possibility of achieving dangerous levels of exchangeable sodium.
The anaerobic effluent had a SAR of 3.1 meq0.5 L−0.5, while the nitrified reached 2.9 meq0.5 L−0.5. By applying these results to the Ayres and Wescott (2008) water classification diagram, it was found that both effluents would be suitable for plants with good salt tolerance and unsuitable for soils with deficient drainage.
The culture used in this study, R. hybrida “Ambiance”, has low tolerance for soil salinity; however, when evaluating the sodium concentration data shown in Table 2, it is noted that the value found in the effluents used in this study were lower than the limits set, by Crook (1991), for that compound. According to the cited author, when the sodium concentration is greater than 69 mg L−1, there is a contamination risk for the plant, which may promote excessive absorption, which is highly phytotoxic, particularly when the soil moisture is low.
Furthermore, the soil was classified as sandy clay, which presents no drainage deficiency, and with only a slight possibility of achieving dangerous levels of exchangeable sodium.
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