VINAZA Y COMPOSTA DE CACHAZA COMO FUENTE DE NUTRIENTES EN CAÑA DE AZÚCAR EN UN GLEYSOL MÓLICO DE CHIAPAS, MÉXICO

SUMMARY The effects of vinasse and filter cake compost were evaluated on the chemical properties of the soil, culture nutrition, sugar- cane yield and juice quality, as well as on the comparative anal- ysis of the costs of its use as an organic fertilizer. The experi- ment was carried out in the Pujiltic sugarmill, Chiapas, México. The treatments were vinasse of 150 and 250m 3 ·ha -1 , NPK fertil- ization (160-80-80), filtercake compost fertilizer of 15t·ha -1 and a control treatment. Variance analysis was used. The results show that the vinasse and compost fertilizer applications did not affect the pH., the electrical conductivity or the cationic interchange capacity of the soil. Treatments with 250m 3 ·ha -1 filtercake vinasse and compost increased the levels of organic matter, K and P in the soil. There were no significant differences in the yield of stems and juice quality was not affected. Finally, the applica- tion of filtercake vinasse and compost fertilizer on the soil did not affect its chemical properties. However, a year of research is not enough time to determine with precision the residual effects of this product.