期刊
CIENCIA RURAL
卷 52, 期 9, 页码 -出版社
UNIV FEDERAL SANTA MARIA
DOI: 10.1590/0103-8478cr20210490
关键词
Eragrostis plana Nees; native pasture; weed control
类别
资金
- Universidade Federal do Pampa (UNIPAMPA)
- Embrapa
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Brasil
- CNPq (Brazil) [CNPq 305816/2016-0]
This study evaluated the efficiency of different methods, including mechanical, physical, chemical, and cultural approaches, for controlling tough lovegrass. The results showed that isolated control methods were not effective, except for the use of glyphosate salts, which could control tough lovegrass plants. The best strategy for controlling the invasive plant was the combination of glyphosate salts, improved soil fertility, and the implantation of Pangola grass.
The current study evaluated the efficiency of mechanical, physical, chemical and cultural methods, used exclusively or integrated, to control tough lovegrass. The experimental design was completely randomized, with 15 treatments and four repetitions. Physical control of tough lovegrass was based on the application of fire, whereas mechanical controls consisted in mowing and harrowing/plowing procedures. The herbicide clethodim and different glyphosate salts were evaluated for chemical control. Glyphosate and soil fertility correction were applied as cultural and integrated methods, in addition to isopropylamine + potassium salts combination, soil fertility correction and implantation of one of the following forage plants: Elephant grass, Pangola grass, Forage peanut and Birdsfoot trefoil. The effect of treatments on the incidence of tough lovegrass and on its botanical composition was evaluated one year after their applications. Isolated control methods, except for glyphosate using, did not present efficient tough lovegrass control. Glyphosate salts could control tough lovegrass plants, but their association with improved soil fertility and Pangola grass implantation was the best strategy to control the invasive plant.
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