Resumen

HERNANDEZ MARTINEZ, Juan M; LEON GONZALEZ, Yarilis  y  HERNANDEZ GARCIA, Betty. Plants spacing and number of leaves in the shade grown dark tobacco. I. Effect in growth and development. cultrop [online]. 2015, vol.36, n.1, pp. 116-121. ISSN 1819-4087.

The study was carried out in the Tobacco Experimental Station "San Juan y Martínez", in Pinar del Río province, to determine the influence of different spacing between plants and number of leaves in growth and development of dark tobacco variety “Corojo-2006” cultivated under shade. A randomized block design with four replications and sixteen treatments by the combination of four spacing among plants (0,30; 0,35; 0,40 and 0,45 m) and four number of leaves per plant (18, 20, 22 and 24) was used. In each treatment height and diameter of stem, longitude and width of central leaf, dry mass for organ and total of plant were measured. The combination of spacing of 0,30 and 0,35 m with 24 leaves per plant facilitated a bigger growth in height of stem; while the biggest magnitudes for the diameter of stem, longitude and width of the central leaf and dry mass of root corresponded to spacing of 0,45 m with the smallest number of leaves. Biomass production in leaves, stems and total was significantly higher when combined the biggest separation among plants (0,45 m) with the biggest number of leaves (24 leaves)

Palabras clave : tobacco; distance among plants; number of leaves; growth; biomass.

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