Abstract
Abstract The present study aimed to evaluate the potential of forest species for herbicide phytoremediation. The experiment was conducted in a greenhouse with a randomized block design and a 2x3x3 factorial scheme, using two soils (Red-Yellow Latosol - RYL and Quartzarenic sandy soil - QN), three herbicide solutions (without herbicides/water, 2,4-D and atrazine), and three forest species (Cecropia hololeuca, Eucalyptus grandis x Eucalyptus urophylla and Hymenea coubaril), with four replications. After the experiment, Cucumis sativus was cultivated in order to investigate possible herbicide residues in the soils. The evaluated forest species reduced atrazine and 2,4-D residues in most treatments, except for the Jatoba (Hymenaea coubaril ) cultivated in the RYL soil. Eucalyptus was the species that showed the greatest tolerance to herbicide action, demonstrating the potential for phytoremediation of atrazine and 2,4-D. Cecropia hololeuca and Hymenaea coubaril presented the greatest potential for 2,4-D and atrazine, respectively.
Highlights
The State of Mato Grosso is an important contributor to national grain production
The present study aimed to evaluate the potential of forest species for herbicide phytoremediation
The experiment was conducted in a greenhouse with a randomized block design and a 2x3x3 factorial scheme, using two soils (Red-Yellow Latosol - RYL and Quartzarenic sandy soil - QN), three herbicide solutions, and three forest species (Cecropia hololeuca, Eucalyptus grandis x Eucalyptus urophylla and Hymenea coubaril), with four replications
Summary
The State of Mato Grosso is an important contributor to national grain production. Studies have shown that the state is the largest national producer, representing approximately 24% of soy production in 2016 (IBGE, 2016). It is known that adequate management of pests, diseases and weeds is necessary in order to obtain high yields. In this context, there has been an increase in pesticide use in the region. Herbicides can be absorbed by the aerial part of plants or reach the soil. When they reach the soil, redistribution and breakdown processes occur, which can be a short process in the case of simple, non-persistent molecules, or last for months or years for persistent compounds (Filizola et al, 2002). According to Pires et al (2003), when the product remains for longer periods in the soil without being adsorbed by colloids, degraded and/or mineralized, the possibility of leaching is greater
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