CORRELATIONS BETWEEN THE LIMITED LEVEL OF NUTRITION AND THE ESSENTIAL OIL PRODUCTION OF PEPPERMINT
According to our results in the case of complete lack of N and P, peppermint's essential oil production significantly decreases and proportion of main oil components changes. The lowest decrease of essential oil production was showed in the case of potassium's lack.
Treatments made in order to cease consequences developed earlier because of lack fo N and P, significantly increased the volatile oil production and varied proportion of main oil components. In the case of potassium's lack the treatment increased the essential oil content in considerably lower degree.