Production of cut sunflower under water volumes and substrates with coconut fiber

Revista Brasileira de Engenharia Agricola e Ambiental

Oliveira, Marcelo S. de¹  Carvalho, Daniel F. de² 

[1] Fundação Instituto Brasileiro de Geografia e Estatística, Rio de Janeiro, Brazil;Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil

关键词: Helianthus annuus L.;    irrigation water management;    ornamental plant.;   

DOI  :  10.1590/1807-1929/agriambi.v22n12p859-865

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This study aimed to evaluate the production of cut sunflower in response to different water volumes and substrates, composed of soil and coconut fiber. Two simultaneous experiments were conducted in greenhouse, located in the Horticulture Sector of the Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica - RJ, Brazil (22º 48’ S, 43º 41’ W and altitude of 33 m), between April and June 2016. Water was applied by an Simplified Irrigation Controller (SIC), allowing the application of different volumes (33, 67 and 133% of retention capacity of substrate) in comparison to the control treatment (100%). The substrates used were 1/3 of coconut fiber and 2/3 of soil (v/v) (Experiment 1), and 2/3 of coconut fiber and 1/3 of soil (Experiment 2). The experimental design was completely randomized, with 5 replicates. The treatment with 100% of the volume applied by the SIC led to best growth of sunflower, increasing the potential income obtained with stems at better marketing standard according to the prices practiced.

【 授权许可】

CC BY