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Introduction Oryzostar (Godrej Agrovet Ltd) Byspiribac sodium 10% SC is a selective post-emergence herbicide used to control a wide range of annual and perennial broadleaf weeds in rice. It is a triazolopyrimidine herbicide that works by inhibiting the enzyme acetolactate synthase (ALS), which is essential for the synthesis of branched-chain amino acids (BCAAs) without BCAAs. Plants cannot grow and eventually die.

Mode of Action

Byspiribac sodium is absorbed by the foliage of plants and translocated throughout the plant. Once inside the plant, it inhibits the enzyme ALS, which is responsible for the synthesis of BCAAs. Without BCAAs, the plant cells stop dividing and the plant dies.

Crops Treated

Oryzostar can be used on rice crops.

Application Rates

The application rate of Oryzostar will vary depending on the target weed, the severity of the infestation, and the environmental conditions. In general, the application rate will range from 250 to 500 grams per hectare.

Application Methods

Oryzostar can be applied by foliar spray.

Application Timing

Oryzostar should be applied when weeds are actively growing. The best time to apply is in the spring or fall when weeds are young and tender.

Re-Entry Interval

The re-entry interval for Oryzostar is 24 hours. This means that people should not enter the treated area until 24 hours after the last application.

Precautions

Oryzostar is a toxic chemical that should be handled with care. Always wear protective clothing, such as gloves, goggles, and a respirator, when handling the product. Do not apply the product in windy conditions or near water sources. Keep the product out of reach of children and pets.

Storage

Store Oryzostar in a cool, dry place away from direct sunlight. Do not store the product with food, feed, or other pesticides.

Disposal

Dispose of unused Oryzostar and empty containers according to local regulations. Do not contaminate water sources.

Disclaimer

The information provided in this document is for informational purposes only and should not be construed as a recommendation for use. Always consult the product label for complete instructions and precautions.