SciELO - Scientific Electronic Library Online

 
vol.37 número3Composición y preferencia de materiales en nidos de vertebrados nidificadores de cavidades en el bosque templado andino de ChileDistribución, tamaño y estructura poblacional de Jubaea chilensis en "Las Palmas", comuna de Petorca, región de Valparaíso - Chile índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Bosque (Valdivia)

versão On-line ISSN 0717-9200

Resumo

MONTEIRO AGUIAR, Luciana et al. Herbicide tolerance and water use efficiency in forest species used in degraded areas recovery programs. Bosque (Valdivia) [online]. 2016, vol.37, n.3, pp.493-500. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002016000300006.

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.

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

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons