U.S. Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
Date of this Version
3-2017
Citation
ANNUAL REPORT OF THE BEAN IMPROVEMENT COOPERATIVE, No. 60, March 2017. Published by USDA.
Abstract
INTRODUCTION: The potential exportation of macronutrients in the harvested part of each crop is an important aspect to consider for programming the restitution of these mineral elements, avoiding their exhaustion in the soil (RAIJ, 2011). The aim of this study was to evaluate the potential exportation rates of nutrients by the harvested pods in a snap bean genotype with indeterminate growth habit, providing theoretical basis for the recommendations of restitution fertilization in the production systems with the cultivation of this vegetable crop.
MATERIAL AND METHODS: The experiment was carried in a greenhouse covered with polyethylene (150 μm thickness) in State University of Londrina – UEL, Londrina, PR, Brazil (23º23’S, 51º11’W and 566 m of altitude). Seeds of snap bean, Topseed® cv. “Líder” with indeterminate growth habit and cylindrical pods, sown at May 15, 2016, in plastic pots filled with sand as substrate and spaced 0.6 m between lines and 0.3 m between plants. Each pot received five seeds and thinning performed when the seedlings reached V1 stage (emergence). In total, 200 plants grown in four rows of pots. The application of nutrients was performed with a fertigation system for a better control of their supply. This system, the substrate and preparation of nutrient solution was the same utilized by Almeida et al, (2016).
Comments
U.S. government work.