Increase in okra production with the addition of nitrogen

Introduction: Growth, yield and quality of okra (Abelmoschus esculentus (L.) Moench) are related to fertilizer application, being nitrogen (N) the most outstanding, due its direct relationship with photosynthesis vegetative growth plant. Objective: The objective was evaluate agronomic productivity characteristics as a function N dose. Materials methods: study conducted at experimental area Campus Gurupi, Universidad Federal de Tocantins (UFT), Brazil, in two planting periods (autumn/winter spring/summer). design used randomized block (RBD) six treatments (50, 100, 150, 200 250 kg ha-1) four replications. Urea source N. evaluated were: productivity, average fruit mass, height plant chlorophyll index. Results: Productivity were superior fall/winter crop. Mean mass index not influenced by time. For linear response obtained increasing dose up limit (250 ha-1), mean value higher than 14 t fruit. responded linearly Nitrogen affected index, maximum values 45.96 47.19, observed evaluation periods. Conclusion: Planting time content soil interacted height, favorable period without precipitation. all characteristics, demonstrating importance fertilization development plants.