Histopathologic diagnosis with PAS staining of nail clippings was the most sensitive among the tests. It was easy to perform, rapid, and gave significantly higher rates of detection of onychomycosis compared to the standard methods, namely KOH mount and mycological culture.

The necessity of adding B in peat soils is recognized. A limited amount of information is available regarding toxic levels of B in these soils. A greenhouse experiment was therefore carried out to measure effects of three levels of lime × four levels of B (including control) × two types of B source on tomato (Lycopersicon esculentum Mill cv. Eurocross BB), cucumber (Curcumis sativus L. cv. Sporu), and sweet corn (Zea mays L. cv. Golden Cross Bantam) in a peat soil. The two sources of B were sodium tetraborate and B‐frit. The crops were grown for about 7 weeks. “Lime had a significant effect on yield of tomato, cucumber and corn, while B‐rate had a significant effect on yield of tomato and cucumber only. B‐rate had a significant effect on B‐concentration of all three crops — B‐source had a significant effect on B‐concentration of sweet corn only.” Visible toxicity symptoms were recorded with cucumber and corn at three times the normal rate of B application. The plant levels of B at which toxicity occurred were 115 and 53 ppm for cucumber and corn, respectively. Hot water soluble B up to 10 ppm failed to produce toxicity symptoms. Significant correlations between hot‐water soluble B and B concentration in plant and B‐uptake suggested that hot‐water soluble B was an effective soil test for peat soils in spite of the fact that it can overestimate the availability of B at high lime levels. The critical values of hot‐water soluble B for deficiency and toxicity are much higher than in mineral soils.

PAP autofluorescence is less sensitive than PAS, still it accentuates the distinct morphological features of Candida.

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