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How Does Paraquat Kill Plants?

Paraquat inhibits photosynthesis as an herbicide. It takes electrons from photosystem I (specifically ferredoxin, which is given with electrons from PS I) and transmits them to oxygen in light-exposed plants. ROS are generated in this way.

Paraquat is a quaternary ammonium cation, so plants cannot make it through their roots. Instead, it enters the plant through the stomata on leaves and diffuses throughout the plant. It has relatively high mobility in soil and can persist in the environment for long periods.

What plants are paraquat used on?

Paraquat is an effective herbicide that has been utilized on a wide range of plants. The Environmental Protection Agency (EPA) has implemented more stringent usage and handling restrictions on the pesticide, but farmers still apply over eight million pounds each year.

Today, it is used on more than 100 different types of crops, including:

  • soybean
  • corn
  • cotton
  • peanuts
  • wheat
  • citrus
  • grapes
  • strawberries
  • sweet potatoes
  • artichokes
  • pears
  • garlic
  • almonds

Paraquat is also used in non-agricultural areas for weed control and crop desiccation before harvest.

There’s no denying that herbicide has had a long utilization history. Unfortunately, the health and environmental effects of paraquat exposure are just two of the costs we pay for successful weed management.

Why is paraquat dangerous?

Paraquat is a non-selective herbicide. This means that it kills all plants equally, with the potential for collateral damage to other flora and even animals. Paraquat has also been shown to stay in the environment longer and be hazardous to birds and non-target vegetation.

However, the health hazards of paraquat to people are certainly one of the most undesirable. It has already been prohibited in numerous countries worldwide, and its One sip can kill’ warning should be proof enough that it is poisonous.

Paraquat and Parkinson’s Disease

Parkinson’s disease is an irreversible brain condition. It’s believed to be caused by neuronal dopamine loss.

Research has linked long-term paraquat exposure to the development of Parkinson’s disease. According to these studies, paraquat raises Parkinson’s disease risk by causing oxidative stress and damaging and killing neurons that produce dopamine.

Several individuals have filed paraquat lawsuits against herbicide producers, including Syngenta, due to the scientific relationship between Parkinson’s disease and paraquat. Filing a paraquat claim is one way for those affected by the herbicide to seek justice and compensation.

Paraquat is defective and causes farmers to get Parkinson’s disease. The manufacturers are accused of failing to notify the public about the danger.

Bottom Line

Paraquat has been utilized as an effective herbicide for many plants, but it’s also known for its dangerous health hazards to people. This in-depth article provides detailed information about the history and effects of paraquat exposure.

Paraquat is a quaternary ammonium cation, so plants cannot make it through their roots. Instead, it enters the plant through the stomata on leaves and diffuses throughout the plant.

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