Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 151, PA02, ISSN.0525-6240
Effect of culturing burley tobacco in double row system
The experiment on growing burley tobacco in single and double rows had been performed on loessial soil in 1987-1989. Five plant spacings were compared, two of them being double row system (90-45--90 x 45 cm and 100-50-100 x 50 cm). Total yield of leaves from plots, where double rows were applied was much the same in comparison to traditional plant spacing (60 x 50 cm) but significantly higher (200-300 kg/ha) than in plots with single rows and wide interrow spacing : 90 x 45 cm and 100 x 50 cm. The advantage from double rows in comparison to traditional plant spacing relied on facilitating cultivation, disease control and hand harvesting. Low plant population (20-24 thousand per hectare) in single, wide spaced rows ensured however higher quality of leaves in all examined features (area of leaves, weight of 1 dm2 of leaf, percentage of midrid and nicotine content). Leaves from more spacious double row system was similar in quality to those from single wide spaced rows , with exception of lower nicotine content. This feature however, does not affect the price of leaves, and it is why the double row system is advantageous for farmers.