versión On-line ISSN 1678-992X
VERDIAL, Marcelo Fontanetti; LIMA, Márcio Santos de; MORGOR, Átila F. y GOTO, Rumy. Production of iceberg lettuce using mulches. Sci. agric. [online]. 2001, vol.58, n.4, pp. 737-740. ISSN 1678-992X. http://dx.doi.org/10.1590/S0103-90162001000400014.
Mulches bring several benefits to lettuce cultivation. This work evaluated the effect of mulches on the cultivation of iceberg lettuce, cv. Lucy Brown. The treatment plots were: 1- no mulch and no weed control (control); 2- no mulch and weed control every 15 days; 3- sugarcane bagasse mulch of 2 cm thickness; 4- black plastic mulch; 5- double-faced plastic mulch (silver/black). Data were collected in regard to plant cycle when in the field, amount of chlorophyll in the leaves, productivity (individual weight per head) and amount of nutrients absorbed by the leaves. Double-faced plastic mulch provides the highest productivity and the highest values for the amount of chlorophyll, nitrogen, phosphorus, sulfur, boron and iron accumulation in the leaves.
Palabras clave : Lactuca sativa; mulching; soil temperature; nutrient.