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Table 4 Mean and Standard Error (SE) of physicochemical conditions of water samples taken from paddies with different rice stage

From: Survival of immature Anopheles arabiensis (Diptera: Culicidae) in aquatic habitats in Mwea rice irrigation scheme, central Kenya

Rice stage Land preparation Transplanting Tillering
Temperature 22.8 ± 0.87 24.25 ± 1.07 24.22 ± 0.70
Conductivity (ms/cm) 301.5 ± 45.11 317.20 ± 60.30 178.72 ± 15.45
Salinity (ppta) 319.54 ± 23.01 240.44 ± 45.07 159.52 ± 18.32
DOb (%) 0.2 ± 0.01 64.92 ± 14.04 91.89 ± 13.71
pH 7.86 ± 0.15 7.85 ± 0.10 7.61 ± 0.06
Nitrate (mg/l) 13.6 ± 3.44 25.9 ± 4.99 12.64 ± 5.09
Sulphate (mg/l) 80 ± 5.25 54.4 ± 11.00 68.22 ± 28.59
Nitrogen Ammonia (mg/l) 0.01 ± 0.001 4.1 ± 0.080 0.14 ± 0.02
  1. Legend: ppta Parts Per Thousand, DOb Dissolved Oxygen