Toxicity: acute oral LD50 for rats > 5000 mg/Kg
Chemical group: sulfonyl urea
HRAC = B
Introduction:
Gyatis is a broad spectrum herbicide very effective for the control of grasses and broadleaf weeds in wheat. It is a combination herbicide based on Mesosulfuron-methyl and Iodosulfuron-methyl sodium. It is a novel safened sulfonyl urea based product for postemergent application. in agreement with other herbicides of sulfonyl urea group, the primary target site of action is the enzyme acetohydroxyacid synthase (AHAS). Both the actives are phloem-xylem mobile in the target weed both via the foliage and via the soil, with clear predominance of foliar action. The visible symptoms of herbicide action are arrested growth within first few days after application and the appearance of chlorotic patches, followed by slow shoot necrosis. Susceptible plants stop growth almost immediately after post-emergence application. Plants will be completely killed in 4 to 6 weeks after application.
SPECIFIC USE INSTRUCTIONS:
| crop | Weed | Dosage |
| wheat | grasses and broadleaf weeds | 1.5 lit per hectare |