How long does malathion last?
Malathion has a half-life of less than one day in soil, which means it takes less than a day for half of a dose to disappear. In the air, its half-life is 1.5 days, on plants about 5.5 days, and in water half a day to 19 days.
What is the re entry time on a pesticide label?
The restricted-entry interval (REI) is the time immediately after a pesticide application when entry into the treated area is restricted. Some pesticides have one REI, such as 12 hours, for all crops and uses.
What is the re entry period?
The re-entry interval (REI) (also known as restricted entry interval or re-entry time) is the minimum amount of time that must pass between the time a pesticide was applied to an area or crop and the time that people can go into that area without protective clothing and equipment.
How often should I apply malathion?
Spray up to three times yearly at no less than 11-day intervals. Do not spray strawberries within three days of harvest. However, you can spray them up to four times annually, with at least a week between sprays. Control aphids with a mix of 1.5 to 2 teaspoons of pesticide concentrate to each gallon of water.
How soon can you water after applying malathion?
Malathion is considered rain fast after it has dried. Give at approximately 4 hours to completely dry. 223 of 235 people found this answer helpful.
What is harvest interval?
The preharvest interval (PHI) is the minimum amount of time between the last application of a pesticide and when the crop can be harvested. Harvest is the cutting of the crop or removal of the produce from the plant. The PHI is found on the pesticide label.
What is a reentry statement?
Some pesticide labels with the signal word “DANGER” or “WARNING” contain a Reentry statement. This statement tells how much time must pass before people can reenter a treated area without appropriate protective clothing.
How long do pesticides stay in your body?
“Older pesticides like DDT can stay in the human body for years, even decades,” Landrigan said. But Dr. Josh Bloom of the American Council of Science and Health says these chemicals have been used in the U.S. for at least 60 years and pose no risk.
What are the dangers of malathion?
Short-term exposures to high levels of malathion can affect the nervous system causing a variety of symptoms, including headaches, nausea, dizziness, weakness, cramps, diarrhea, excessive sweating, blurred vision and increased heart rate.
How often can you use malathion?
How many times can you spray malathion?
How long does it take for malathion to break down?
Because of these properties, malathion can be found in surface waters such as streams, and sometimes it is found in well water. The time it takes for malathion to break down to half of the original amount in soil is about 17 days, depending on the soil type. This length of time is known as the half-life.
What is the purpose of the reentry interval?
The reentry interval is the time period required by federal law between application of pesticides to crops and the entrance of workers into those crops without protective clothing. Reentry intervals serve to protect workers from possible pesticide poisoning.
What are reentry intervals and EPA registration numbers?
Insecticide Classes, Reentry Intervals, and EPA Registration Numbers The reentry interval is the time period required by federal law between application of pesticides to crops and the entrance of workers into those crops without protective clothing. Reentry intervals serve to protect workers from possible pesticide poisoning.
What are the symptoms of exposure to malathion?
What are some signs and symptoms from a brief exposure to malathion? People who were exposed to enough malathion to become sick felt nauseated or vomited, had muscle tremors, cramps, weakness, shortness of breath, a slowed heart rate, headache, abdominal pain and diarrhea.