Figure 2
From: Farm use of calcium hydroxide as an effective barrier against pathogens
Evaluation of pH persistence under stand-by disinfection conditions. (a) Typical outdoor test. Ca(OH)2 powder was spread at 1 kg/m2. (b) In the outdoor test, the change in pH after treatment with Ca(OH)2 powder was evaluated on soil, grass, a road, and in front of a barn. (c) Schematic of the indoor test to measure the pH following disinfectant treatment. To mimic the outdoor conditions, this system consisted of a tray, artificial grass, and a paper box. For the treatments, disinfectants were placed in a paper box. Water (200 cm3/day) was applied, equal the annual precipitation in Hokkaido prefecture, Japan. (d) In the indoor test, the pH after treatment with Ca(OH)2 powder or SLBGs was evaluated. Data represent the mean from three separate experiments. Error bars show the standard deviation.
