Ascophyllum nodosum seaweed extract and mineral nitrogen in Alibertia edulis seedlings

ABSTRACT Physiological and nutritional management is an important practice for obtaining high quality seedlings. The use of seaweed extract has emerged as alternative to fertilizers biostimulants, although information on this with respect Alibertia edulis, a fruit-bearing species native the Cerrado region, scarce. aim study was evaluate effects Ascophyllum nodosum L. (ANE), both without addition mineral nitrogen, growth, nitrogen nutrient efficiency indices, A. edulis seedlings received five doses ANE (0, 5, 10, 15, 20 mL L-1 water) via foliar application, N soil (50 mg kg-1 urea). A randomized block design used treatments arranged in 5 × 2 factorial scheme. plant height, stem diameter, chlorophyll index, number leaves obtained were analyzed split-plots over time. Foliar application 15 contributed greater growth seedling quality, regardless nitrogen. Seedlings treated alongside 13.98 showed greatest leaf area. highest efficiency, uptake, occurred that extract.