We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Cultivo de girassol em sistema hidropônico sob diferentes níveis de salinidade.
- Authors
Santos Júnior, José Amilton; Gheyi, Hans Raj; Guedes Filho, Doroteu Honório; Dias, Nildo da Silva; Loureiro Soares, Frederico Antônio
- Abstract
Hydroponic systems have constituted an alternative for combating the adverse natural factors of agricultural production in the semi-arid regions of Brazil, such as shallow rocky and infertile soils, and the scarcity of good quality water resources (high salt content). This work studied the yield of the sunflower (variety EMBRAPA 122/V-2000) destined or achene and fodder (phytomass) production, grown hydroponically, using coconut fiber as substrate and irrigated with brackish water of varying salinities. The experimental layout used was completely randomized into a 5 x 2 factorial design with three replications, five levels of water salinity and two planting density - with one or two plants per pot being studied. The irrigation water was composed of 50% standard nutrient solution and 50% municipal water supply, with added levels of NaCl, resulting in an eletrical conductivity (ECw) of 1.7; 4.3; 6.0; 9.0 and 11.5 dS m-1. The differential density of the sunflower plants positively affected the yield components of grain and biomass, showing greater viability when using two plants per pot.
- Subjects
SUNFLOWERS; HYDROPONICS; WATER supply; AGRICULTURAL productivity; BRACKISH water plants; SALINITY
- Publication
Revista Ciência Agronômica, 2011, Vol 43, Issue 4, p842
- ISSN
0045-6888
- Publication type
Article
- DOI
10.1590/s1806-66902011000400004