Abstract
Herbicides are widely used to control weeds in agriculture filed, however, the excessive use of the conventional formulation causes harmful side effects on the environment. To relieve this problem, natural polymer nanoparticles as herbicide carrier were rapidly developed and applied in recent years. In the present study, chitosan/tripolyphosphate (CS/TPP) nanoparticles were synthesized as nanocarrier to load herbicide 4-chloro-2-methylphenoxyacetate sodium salt (MCPA-Na). The encapsulation efficiency (EE) of 51.32% was obtained through measuring indirectly by high performance liquid chromatography (HPLC). The free and MCPA-Na-loaded CS/TPP nanoparticles were characterized by using dynamic light scattering (DLS), zeta potential, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The encapsulation of MCPA-Na in CS/TPP nanoparticles resulted in the change of MCPA-Na release profile in different pH media and displayed effective sustained-release under neutral condition. The evaluation of herbicidal activity against Bidens pilosa L. showed that the efficacy enhancement of MCPA-Na was realized after encapsulation in CS/TPP nanoparticles. The proposed herbicide nanoformulation presented a good potential as a sustainable alternative for weed control in agriculture.
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Claims 3
Claim · model-written summary
MCPA-Na encapsulation efficiency in CS/TPP nanoparticles was 51.32%.
Verbatim
e0“The encapsulation efficiency (EE) of 51.32% was obtained through measuring indirectly by high performance liquid chromatography (HPLC).”
Claim · model-written summary
Encapsulation changed the MCPA-Na release profile and sustained release under neutral conditions.
- Treatment
- encapsulation of MCPA-Na in CS/TPP nanoparticlese0
- Outcome
- MCPA-Na release profilee0
- Qualifier
- under neutral conditione0
Not reportedValue
Verbatim
e0“The encapsulation of MCPA-Na in CS/TPP nanoparticles resulted in the change of MCPA-Na release profile in different pH media and displayed effective sustained-release under neutral condition.”
Claim · model-written summary
Encapsulating MCPA-Na in CS/TPP nanoparticles enhanced efficacy against Bidens pilosa.
- Taxon
- Bidens pilosa L.
Bidens pilosae0 - Treatment
- encapsulation in CS/TPP nanoparticlese0
- Outcome
- herbicidal activitye0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The evaluation of herbicidal activity against Bidens pilosa L. showed that the efficacy enhancement of MCPA-Na was realized after encapsulation in CS/TPP nanoparticles.”
The same questions in other papers
nanoparticle · weed · Bidens pilosa (bur-marigold)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.