Control methods of Prosopis juliflora em areas invadidas no semiarido do Brasil

• Published in: Ciência florestal Vol. 25; no. 3; p. 645
• Main Authors: Goncalves, Gerlandio Suassuna, de Andrade, Leonaldo Alves, Xavier, Klerton Rodrigues Forte, da Silva, Jose Ferreira
• Format: Journal Article
• Language: Portuguese
• Published: Universidade Federal de Santa Maria 01-07-2015
• Subjects: Brasil
• ISSN: 1980-5098

The objective of this study was to evaluate the efficiency of different methods to control Prosopis juliflora, invasive alien species in the semiarid region of northeastern Brazil. The experimental design was completely randomized in triple factorial scheme 2x2x8 (two populations of the species, two growth stages--regenerating and adult individuals and eight control treatments), with 10 repetitions. The treatments were: control, girdling of the stem, girdling and brushing of used lubricating oil; girdling and application of 2,4-D + picloram, clear cutting, clear cutting followed by burning of the stump; clear cutting and brushing of used lubricating oil; and clear cutting and application of 2,4-D + picloram. In total 320 individuals were monitored, among these, 160 regenerates and 160 adults individuals. The variables evaluated were: percentage of control, number of shoots, diameter and length of shoots. According to the results among the treatments, those who were more effective in controlling Prosopis juliflora were clear cutting followed by burning of the stump and application of 2,4-D + picloram in cut and girdled plants. The brushing lubricating oil on the basis of girdled plants also showed a promising strategy to control invasive. Keywords: biological invasion; control plants; algaroba; caatinga biome. O objetivo deste estudo foi avaliar a eficiencia de diferentes metodos no controle de Prosopis juliflora, especie exotica invasora na regiao semiarida do Nordeste do Brasil. O delineamento utilizado foi inteiramente casualizado, em esquema fatorial triplo 2x2x8 (duas populacoes da especie; dois estadios de crescimento --regenerante e adulto; e oito tratamentos de controle), com 10 repeticoes. Os tratamentos testados foram: testemunha; anelamento do caule; anelamento e pincelamento do caule com oleo lubrificante usado; anelamento do caule e aplicacao de 2,4-D + picloram; corte raso; corte raso seguido de queima das cepas; corte raso e pincelamento de oleo lubrificante usado nas cepas; e corte raso e aplicacao de 2,4-D + picloram nas cepas. No total foram monitorados 320 individuos, dentre estes, 160 regenerantes e 160 adultos. As variaveis avaliadas foram: porcentagem de controle; numero de brotacoes; diametro e comprimento de brotacoes. Dentre os tratamentos avaliados, os que se mostraram mais eficientes no controle de Prosopis juliflora foram o corte raso, seguido de queima das cepas e aplicacao de 2,4-D + picloram em plantas cortadas e aneladas. O pincelamento de oleo lubrificante na base de plantas aneladas tambem se mostrou uma estrategia promissora no controle da invasora. Palavras-chave: invasao biologica; controle de plantas invasoras; algaroba; caatinga.