Maher Paraquat (25% SL)
Paraquat is a contact and non-selective herbicide of the bipyridyl group that is used to control one year’s weeds.
Mechanism of action:
Paraquat is a herbicide that, in addition to its contact effect, has little displacement effect (in the xylem) and damages the cell membrane and cytoplasm. This compound is not durable in the environment, but it is quickly absorbed by the green parts of the plant and is fast-acting. Its contact effect is related to the cationic part of paraquat, and its anions have no effect. Paraquat produces activated oxygen in the plant.
Indications :
Since paraquat only affects the contact area, during spraying, care must be taken to ensure that all green parts of the target plant are covered with poison particles and to avoid contact with the adjacent crop. If the water used is muddy and contains heavy metals salts, we will reduce the efficacy of the poison. It is often recommended to have an afternoon spraying to achieve better results. Also, care must be taken not to spray poison particles on adjacent weeds, so spraying should preferably be carried out at a time when weed height is 15 cm or less. Paraquat is used to control broad and narrow leaf weeds in the gardens of pome and stone fruit, grapevine, citrus, alfalfa, clover, and sainfoin, as well as sugarcane and potato weeds (under trees and between sowing rows). In alfalfa fields, from the second year onwards, to control the parasitic weed dodder (1% solution), it is used as a leaf extract prior to harvesting (in cotton and soybeans). It should be noted that in order to observe the efficiency, spraying should be carried out during growth and activity of the weed. Adding herbicides that prevent the process of photosynthesis (preventing electron transfer to photosystem I (PSI)) increases the activity of paraquat. Cool air (close to zero degrees Celsius) reduces the activity of paraquat.
Compatibility and Mixing:
The paraquat acts as non-selective and is not compatible with any product and should be used in such a way that it does not damage the original product. This compound is not compatible with alkaline compounds, anionic dispersants and a soluble material consisting clay.
Note: The recommended items are from a variety of authentic foreign and domestic sources (books, articles, and brochures) and are intended solely for the purpose of familiarizing distinguished experts and farmers with various aspects of the use of this poison. Therefore, it is advised that the recommendations of the plant protection organization should be prioritized. In the case of technical advice from Maher Shimi Industrial Corporation, a preliminary test is recommended at the small level before consumption. In addition, the issues and points are general and depend on the environmental conditions and existing facilities. Because the manufacturer is unaware of how the storage conditions, the time of consumption, the number of doses consumed, the way in which it is consumed, the environmental condition, and its mixing with other pesticides and chemical compounds by the consumer, so no responsibility is given to the manufacturer.
Uses of paraquat in agriculture:
The product, fighting time, and the amount of consumption
Cold fruit trees and grapevine when weed height is 10-15 cm, 3-5 liters per hectare
Citrus, initial stages of weed growth, 3-4 liters per hectare
Alfalfa and clover, (to control the parasitic weed dodder) on alfalfa, which is more than one year old, 3-5 liters per hectare (spotted with a solution of 1 per thousand of poison)
Sugarcane, after weed emergence, 3 liters per hectare
Potato, when 20% of the potato bushes were removed from the soil (before potatoes growth and after weed emergence), 3 liters per hectare.