Prahar

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Prahar

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Trade Name	Prahar
Common Name	Profenophos 50% EC

Physio Chemical Properties:

Trade name	Prahar
Common name	Profenofos 50% EC
Chemical Name	O-(4-Bromo-2-chlorophenyl)-O-ethyl-S-propyl phosphorothioate
Molecular Formula	C₉H₂₂O₄P₂S₄
Molecular weight	384.48
Physical state (Tech)	Odourless amber liquid.
Melting point (Tech)	-15° to -12°
Solubility	Soluble in all organic solvents.
Stability	End product is stable for 2 years if stored under proper conditions.
Toxicity	Acute Oral (LD₅₀ for rats) is 430.89 mg/Kg body weight. Acute Dermal (LD₅₀ for rabbit) is 494.27 mg/Kg body weight.

Mode of Action:

Profenofos is a neurotoxin acting as a cholonesterase inhibitor in insect nervous system. The separate optical isomer, due to the chiral phosphorus atom, shops different types of insecticidal activity and ability to inhibit acetyl cholinesterase.

Benefits:

Being broad spectrum it affords control over all sucking pests and foliar feeding larvae.
It is basically used as an acaricide giving excellent control of mites on a variety of crops.
It exhibits ovicide cum adulticide actions.
Fast knock down action with long lasting residual activity.
Less waiting period between last spray and harvest.

Method of Application:

Prahar 50 EC can be applied as a foliar spray.

Preparation for Spray Solution:

Take a small quantity of water in a container and dissolve required quantity of Prahar 50 EC in it. Stir this solution properly and mix it with the remaining quantity of water. The volume of total water required will depend on crop stage, crop cover, the total area to be treated and the type of sprayer used.

Spectrum of Action and Suggested Uses:

Crop	Pest	Dosage (ml/ha)
Tea	Aphids Thrips Pink mite Purple mite Scarlet mite Red Spider mite Helopiltis	500 500 500 500 500 500 500

Others:

Compatibility
Prahar 50 EC is compatible with all existing plant protection chemicals presently available in the market except alkaline formulations.
Phytotoxicity
It is not phytotoxic on any crops if used at recommended doses.
Precautions and Antidotes
Accidental ingestion should be avoided at all costs. Wear protective clothing while spraying. Wash hands and body after spraying. Do not eat or drink or smoke while spraying.

If accidental poisoning occurs call physician immediately. If swallowed, gastric lavage with warm water may be given followed by administration of mixture containing activated charcoal 2 parts, magnesium oxide 1 part and tannic acid 1 part in 300 ml of warm water.

Atropine the patient immediately and maintain full atropinization by repeated doses of 2 to 4 mg at 5 to 10 minutes interval for hours together. The need for atropinization is indicated by the continuance of symptoms. As much as 25 to 50 mg may be required in a day. The extent of salivation is a useful criterion to follow in adjusting the dosage of atorpine. 1-2 gm 2 PAM dissolved in 10 CC distilled water and is injected intravenously very slowly for 10 to 15 minutes.
Packaging
Available in 250 ml, 500 ml, 1 Litre & 5 Litre.

Used In Following Countries:

India

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