Bosque (Valdivia)  vol.37 no.3; Abstract: S0717-92002016000300006
Revistas Electrónicas UACh
Web Sistema de Bibliotecas UACh
Formulario de Contacto Revistas Electrónicas UACh (OFF)
Revistas Electrónicas UACh - Bosque (Valdivia)
 
vol.37 no.3Composition and preferences regarding nest materials by cavity-nesting vertebrates in the Andean temperate forest of ChileJubaea chilensis distribution in "Las Palmas", Borough of Petorca, Región of Valparaíso - Chile  author indexsubject indexsearch form
Inicio revistaalphabetic serial listing  
-

Bosque (Valdivia)
On-line ISSN 0717-9200

 
  How to cite this article
  Add to favorites article
  Send to E-mail


Abstract

MONTEIRO AGUIAR, Luciana, BARBOSA DOS SANTOS, José, ANTUNES DA COSTA, Vitor et al. Herbicide tolerance and water use efficiency in forest species used in degraded areas recovery programs. Bosque (Valdivia), 2016, vol.37, no.3, p.493-500. ISSN 0717-9200.

The use of tree species in recovery areas is a sustainable practice in many Brazilian regions. However, a major challenge is to manage invasive species and contain the herbicide residues applied in areas for recovery. Amid all the concerns about water crises, employing species with a better use of water in recovery programs of degraded areas on herbicides-contaminated sites becomes interesting. The objective of this study was to evaluate sensitivity to atrazine, clomazone and 2,4-D and water use efficiency in tree species. For this, an experiment was conducted under nursery and greenhouse conditions, in random blocks, consisting of a factorial arrangement: eight forest species (Eremanthus crotonoides, Richeria grandis, Protium heptaphyllum, Tapirira guianensis, Kielmeyera latrophyton, Calophyllum brasiliense, Inga striata and Caesalpinia ferrea) and three herbicide solutions, plus the control group. The total dose proposed for each product was twice the average recommended dose (2.5 kg ha-1, 2.0 L ha-1 and 0.806 kg ha-1, respectively, for atrazine, clomazone and 2,4-D), divided into six ten-day intervals each. After 80 days of the first application, phytotoxicity was evaluated, as well as chlorophyll, leaf temperature, leaf area and efficient use of water. Most species were negatively affected by the three herbicides. Protium heptaphyllum, K. latrophyton, I. striata and C. ferrea also experienced negative alterations in some variables, however, they were classified as the less sensitive group, allowing eventual use of the tested herbicides for chemical weed control in commercial plantations. Tapirira guianensis was the most efficient species in the use of water, regardless of herbicide presence.

Keywords: atrazine; clomazone; 2,4-D; riparian zones; atrazina; clomazona; 2,4-D; zonas ribereñas.

        · abstract in spanish     · text in english     · pdf in english


© 2019 • Facultad de Ciencias Forestales, Universidad Austral de Chile
Teléfono/Fax: 56 63 221998 • Casilla 567 • Campus Isla Teja S/N • Valdivia • Chile
E-mail: