Data/hora: 14/06/2024 05:14:59

Provedor de dados: | 86
País: | Brazil
Título: | Leaf-cutting ant attack in initial pine plantations and growth of defoliated plants
Autores: | Nickele,Mariane Aparecida; Reis Filho,Wilson; Oliveira,Edilson Batista de; Iede,Edson Tadeu; Caldato,Nádia; Strapasson,Priscila.
Data: | 2012-07-01
Ano: | 2012
Palavras-chave: | Acromyrmex crassispinus; Pinus taeda; Artificial defoliation; Forest pest.
Resumo: | The objective of this work was to evaluate the natural attack by Acromyrmex crassispinus in initial Pinus taeda plantations without control measures against ants, as well as the effect of defoliation in seedlings of P. taeda. Evaluations of the attack of leaf-cutting ants on P. taeda plantations were done monthly in the first six months, then 9 and 12 months after planting. The percentages of plants that were naturally attacked by ants were registered. The effect of defoliation was evaluated by artificial defoliation, simulating the natural patterns of attack by A. crassispinus on P. taeda seedlings. The natural attack of A. crassispinus was greater during the first months after planting, being more intense in the first 30 days. Artificial defoliation indicated that there were no significant losses in diameter and height in plants with less than 75% defoliation. However, there were significant losses in diameter and height in plants with 100% defoliation, independently of the cut of the apical meristem, and also plant death. The control of leaf-cutting ants in P. taeda plantings, in which A. crassispinus is the most frequent leaf-cutting ant, should be intense only at the beginning of planting, since the most severe attacks occur during this time.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000700003

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2012000700003
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.47 n.7 2012
Fonte: | info:eu-repo/semantics/openAccess