Essays for the control of Clethra arborea and Pittosporum undulatum

Silva, Luís; Smith, Clifford W.; Tavares, João

http://hdl.handle.net/10400.3/770

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Authors

Silva, Luís

Smith, Clifford W.

Tavares, João

Abstract(s)

Clethra arborea Aiton (Clethraceae) is a tree endemic to Madeira island and naturalised in São Miguel island (Azores). Pittosporum undulatum Ventenat (Pittosporaceae) is a tree from Australia which invaders all the Azorean islands. Several chemical formulations were tested against these invaders by cutting the trunk and applying herbicide, namely triclopyr, imazapyr and glyphosate, at several rates. For P. undulatum imazapyr was the most promising herbicide. For C. arborea good results were obtained at low rates, specially with triclopyr, which stimulated microbial growth and stump rotting. After two years, seedlings of several species were found around the treated stumps. Uprooting of saplings might complement a general control strategy.

Description

1º Encontro sobre Invasoras Lenhosas : Tema III - Estratégias de Controlo Integrado e Possibilidades de Valorização. Gerês, 16 a 18 de Novembro de 1999.

Keywords

Azorean Islands Applying Herbicide Chemical Control Clethra arborea Aiton Control Strategy Pittosporum undulatum Ventenat

URI

http://hdl.handle.net/10400.3/770

Citation

SILVA, L., C.W. SMITH & J. TAVARES, (1999). Essays for the control of Clethra arborea and Pittosporum undulatum. "Actas do 1º Encontro sobre Invasoras Lenhosas". SPCF/ADERE. Gerês: 143-148.