ISHS Acta Horticulturae 344: International Symposium on Medicinal and Aromatic Plants
EFFECT OF SOIL DEPTH AND CROPPING LENGTH ON THE ROOT SYSTEM GROWTH IN LIQUORICE (GLYCYRRHIZA GLABRA L.) |
| Authors: | G. De Mastro, G. Circella |
| Abstract:
This paper reports on the results of a four-year trial (1989–92), carried out in the experimental field of Bari University, aimed to study the physiological response of liquorice to soil depth and cropping length variations. Five soil depths (20, 37, 52, 72 and 89 cm) and different irrigation treatments to keep soil moisture at field capacity for liquorice plants, vegetatively propagated in PVC (Polyvinylchloride) pots, were used. Leaf area, weight and size of the root system were determined after the first year and repeated in the following three years. A poor root system growth and a slight influence of soil were observed in the first year; starting from the second year on wards, the soil depth showed a good correlation with the liquorice growth. The best results in terms of root yield were obtained the last year. | |
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