RESPOSTA DA CENOURA A NÍVEIS DE IRRIGAÇÃO E COBERTURAS DO SOLO COM PALHADA

Abstract

The objective of this work was to evaluate the production of carrot, cultivate Brasilia to different plant mulches and irrigation management in the production parameters, quality of roots. The experiment was conducted in a red latosol, clay texture in Morrinhos / GO, from May to August 2016. The experimental design was a randomized block design with four replications in 4 x 4, in a split plot. Being the primary treatments, four irrigation levels (60%, 80%, 100% and 120% of potential crop evapotranspiration - ETc), with reading and irrigation done daily and secondary treatments consisted of soil mulching using four sources of plant residues: rice husk, emerald grass (Zoysia japonica), mulching of sugar cane and soil without cover. Harvest was done at 100 days after sowing. Were evaluated: average diameter of root (mm); weed infestation (number of individuals/m2); Average root length (cm); marketable yield (kg/ha); defective root yield (kg/ha); Total yield (kg/ha); soluble solids; fresh weight of aerial part (MFPA, g/plant); commercial yield (number of commercial roots/kg); and roots classification. There was a significant effect of irrigation management (MI) on fresh shoot mass, total productivity, soluble solids content and commercial productivity, with 120% management showing higher production. Soil cover with grass straw yielded the best results: less infestation of weeds, greater diameter and root length, greater fresh shoot mass and soluble solids content.