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Table 5

Lake Abaya water salinity indices for irrigation

Irrigation WQIMean±StdAyers & Westcot (1985) Suitability for irrigation
SAR 16.8±3.3 0–26 Fair 
SSP (%) 85.0±2.1 0–60 Poor 
MAR (%) 47.6±7.0 0–50 Suitable 
KR 6.3±1.2 0–1 Unsuitable 
RSC (meq/L) 5.4±0.5 0–2.5 Unsuitable 
PI (%) 96.7±1.2 25–75 Class I (Good) 
PS 6.4±0.8 0–10 Good 
Irrigation WQIMean±StdAyers & Westcot (1985) Suitability for irrigation
SAR 16.8±3.3 0–26 Fair 
SSP (%) 85.0±2.1 0–60 Poor 
MAR (%) 47.6±7.0 0–50 Suitable 
KR 6.3±1.2 0–1 Unsuitable 
RSC (meq/L) 5.4±0.5 0–2.5 Unsuitable 
PI (%) 96.7±1.2 25–75 Class I (Good) 
PS 6.4±0.8 0–10 Good 

NOTE: SAR=sodium absorption ratio, SSP=soluble sodium percentage, KR=kelly ratio, RSC=residual sodium carbonate, PI=permeability index, PS=potential salinity.

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