Journal
PLANTS-BASEL
Volume 11, Issue 23, Pages -Publisher
MDPI
DOI: 10.3390/plants11233366
Keywords
nanoformulation; nanoherbicide; sorption-desorption; soil mobility; soil organic matter
Categories
Funding
- Sao Paulo Research Foundation [2017/21004-5, 2019/04758-1, 2021/03455-5, 2022/00718-8, 2022/01554-9]
- Associacao dos Produtores de Soja e Milho do Estado de Mato Grosso (APROSOJA Projeto Agrocientista)
- National Council for Scientific and Technological Development (CNPq)
- Instituto Mato-Grossense do Agronegocio (IAGROMT)
Ask authors/readers for more resources
The study found differences in adsorption and mobility characteristics between nanoformulations and conventional formulations in soil, with the presence of organic material playing a significant role. While nanoformulations were more easily adsorbed by soil, they could not completely prevent the mobility of herbicides in soil, highlighting the importance of organic material maintenance for environmental safety.
Nanoformulations have been used to improve the delivery of fertilizers, pesticides, and growth regulators, with a focus on more sustainable agriculture. Nanoherbicide research has focused on efficiency gains through targeted delivery and environmental risk reduction. However, research on the behavior and safety of the application of these formulations in cropping systems is still limited. Organic matter contained in cropping systems can change the dynamics of herbicide-soil interactions in the presence of nanoformulations. The aim of this study was to use classical protocols from regulatory studies to understand the retention and mobility dynamics of a metribuzin nanoformulation, compared to a conventional formulation. We used different soil systems and soil with added fresh organic material. The batch method was used for sorption-desorption studies and soil thin layer chromatography for mobility studies, both by radiometric techniques. Sorption parameters for both formulations showed that retention is a reversible process in all soil systems (H similar to 1.0). In deep soil with added fresh organic material, nanoformulation was more sorbed (14.61 +/- 1.41%) than commercial formulation (9.72 +/- 1.81%) (p < 0.05). However, even with the presence of straw as a physical barrier, metribuzin in nano and conventional formulations was mobile in the soil, indicating that the straw can act as a barrier to reduce herbicide mobility but is not impeditive to herbicide availability in the soil. Our results suggest that environmental safety depends on organic material maintenance in the soil system. The availability can be essential for weed control, associated with nanoformulation efficiency, in relation to the conventional formulation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available