The present study was undertaken to evaluate the plant nutritional status the root quality and yield of carrots, cv. Brasília, influenced by the following treatments: seven types of organic compounds which were produced from liquid swine manure and straw-materials, that is, crushed-sugar-cane, napier grass and coffee straw and the crushed-sugar-cane with or without gypsum or superphosphate triple; one with dry swine manure; one with chemical fertilization, and a untreated control. The experiment was carried out under field conditions using a randomized block design with four replications, from May 3 to August 23, 1994, at EPAMIG Experimental Estation in Ponte Nova county, Minas Gerais State, Brazil. Generally, both a greater plant height and aerial part yield were obtained from treatments with organic compounds and dry swine manure. The organic compounds produced from coffee straw plus liquid swine manure, crushed-sugar-cane plus superphosphate triple and napier grass plus liquid swine manure provided yields of total roots over than 50 t.ha-1. The organic compound produced form coffee straw and liquid swine manure provided a greater yield of total and commercial roots. Enrichment of the organic compound crushed-sugar-cane plus liquid swine manure with gypsum or superphosphate triple did not affect root yield, neither Ca and P contents in leaves and roots. The carrot roots that received organic or mineral fertilization presented superior P and K contents and similar Ca content, when compared to those contents considered as standard for elaborating human diets.
carrots; nutrition; suine manure; organic fertilization; mineral fertilization