Resumen

TOLEDO, E; CABRERA, J. A; LEYVA, A  y  POHLAN, H. A. J. Estimación de la producción de residuos agrícolas en agroECOsistemas de caña de azúcar. cultrop [online]. 2008, vol.29, n.3, pp. 17-21. ISSN 0258-5936.

In 1996, a trial was initiated in Chiapas, Mexico, with the objective to estimate the amount of crop residues remaining in the field after sugarcane harvest. An established plantation was used to design three strip blocks with a 3250 m2-area each. On that date, one block was fully burnt and the whole residual biomass was preserved in situ; the other block continued being burnt just at preharvest whereas the third one was always burnt previous to and 15 days after harvest. Sugarcane variety Mex 69-290 was studied with 12-month-old ratoons harvested in December. Concerning the non-burnt block, mean dry sugarcane trash yield (DSCTY) was calculated and a linear regression established between cane yield (CY) and DSCTY. Green cane trash blanket did not affect the subsequent ratoon yields, so that CY and DSCTY increased from 16 to 30 Mg.ha-1, with a mean value of 23.71±3.01 Mg.ha-1 that represented 17.1 % CY. DSCTY/CY relationship was not modified in time, reaching a mean value of 171 kg DSCTY per each CY Mg. For Mex 69-290 variety, DSCTY could be estimated, when sugarcane was burnt, from CY and the mean value of 0.171 Mg DSCTY.Mg cane-1 and the regression obtained

Palabras clave : sugarcane; crop residues; burning; Mexico.