Description
What is UMBRA
Umbra is a modern post emergence herbicide designed for wheat farmers in Pakistan who need quick, reliable and long lasting control of annual broadleaf weeds. It contains two powerful active ingredients. Tribenuron Methyl from the sulfonylurea family and Florasulam from the triazolopyrimidine family. These two chemistries work together to target stubborn broadleaf weeds that reduce yield, compete for nutrients and make wheat fields difficult to manage.
Umbra is formulated as a water dispersible granule that dissolves smoothly in the spray tank. It gives wheat a clean start during the early growing season. The combination of active ingredients delivers fast visible results and ensures healthy crop growth. Farmers in Balochistan, Khyber Pakhtunkhwa, Punjab and Sindh will find Umbra especially useful because of its strong action against the common broadleaf weeds found in local fields.
Umbra is suitable for use in all major wheat growing zones and fits well in integrated weed management plans. The product has a pre harvest interval of 60 to 70 days. The pack size of 30 grams is ideal for farmers who prefer accurate, easy and economical application.
Key Benefits
- Strong broadleaf weed control in wheat
- Dual ALS inhibitor action for improved performance
- Fast visible results for clean and healthy crop rows
- Helps protect yield and improves fertilizer use efficiency
- Easy to dissolve water dispersible granule
- Suitable for all Pakistani wheat zones and climatic conditions
How It Works
Umbra works by blocking the activity of the ALS enzyme inside weed plants. ALS stands for acetolactate synthase. This enzyme is responsible for producing essential amino acids that weeds need for growth. Both Tribenuron Methyl and Florasulam are ALS inhibitors. They stop amino acid formation. Once this process is blocked, weeds cannot continue normal growth. Their cell division slows down and they gradually dry up.
The dual chemistry provides a wider spectrum and more consistent control than using only one active ingredient. It also reduces the chance of herbicide resistance because weeds are exposed to two ALS inhibiting molecules with slightly different binding characteristics. Wheat plants have natural metabolic tolerance to these chemistries, allowing Umbra to kill weeds without harming the crop when used according to guideline.
Target Pests and Diseases
Main Targets:
- Annual broadleaf weeds in wheat
These include many common problem weeds found in Pakistan such as wild mustard, common lambsquarters, fumitory, pigweed, shepherd’s purse, and chickweed.
Other Crops & Diseases (Based on global scientific data for the active ingredients)
✔ 1. Barley
Diseases Controlled:
- Not applicable. This product controls weeds.
- Broadleaf weeds
- Resistant type broadleaf weeds
- Hard to kill winter annual species
Benefits / Usage / Why Effective / Ideal Conditions:
- Dual ALS inhibitors for strong weed suppression
- Works best in moist soil after rainfall or irrigation
- Helps barley achieve stronger early season growth
✔ 2. Oats
Diseases Controlled:
- Broadleaf weeds
- Growth suppressing annual weeds
Benefits / Usage / Why Effective / Ideal Conditions:
- Supports clean fields for uniform oat tillering
- Low dose chemistry with high activity
- Effective during cool season weed flushes
✔ 3. Maize (Corn)
Diseases Controlled:
- Certain annual broadleaf weeds sensitive to Tribenuron Methyl and Florasulam
Benefits / Usage / Why Effective / Ideal Conditions:
- Improves early maize stand by reducing weed competition
- Helps maintain moisture and nutrient availability
- Works well when weeds are young and actively growing
✔ 4. Sorghum
Diseases Controlled:
- Broadleaf weeds affecting sorghum productivity
Benefits / Usage / Why Effective / Ideal Conditions:
- Supports clean rows and better sunlight penetration
- Widely studied ALS chemistry for cereal crops
- Performs well in dry regions with timely irrigation
✔ 5. Millet
Diseases Controlled:
- Annual broadleaf weeds common in millet areas
Benefits / Usage / Why Effective / Ideal Conditions:
- Reduces early competition
- Suitable for arid and semi arid regions
- Works effectively under low humidity conditions
✔ 6. Pasture Grasses
Diseases Controlled:
- Unwanted broadleaf weeds in grasslands
Benefits / Usage / Why Effective / Ideal Conditions:
- Helps maintain healthy forage quality
- Easy to apply with standard sprayers
- Effective during early weed growth stages
Recommended Use
Follow label instructions or contact Farmisto Chemicals for the exact dose. Apply or treat seeds as directed on packaging.
Apply Umbra when weeds are young and actively growing. Use clean water and ensure good spray coverage. Avoid spraying during strong winds or extreme temperatures.
Safety and Precautions
- Wear gloves, mask and long sleeves during mixing and spraying
- Avoid contact with skin, eyes and clothing
- Do not inhale spray mist
- Keep away from children, food and animal feed
- Dispose empty pack safely and do not reuse
- Wash hands and clothes after handling
Local Advice for Pakistani Farmers
Pakistan’s wheat belt covers all four provinces. Umbra fits well in these varying conditions:
Punjab:
High weed pressure due to early sowing and irrigation. Umbra helps maintain clean rows for high yield wheat under canal irrigated systems.
Sindh:
Warm climate and mixed weed populations. Umbra supports weed management in both early and late sown wheat.
Khyber Pakhtunkhwa:
Cool temperatures and rain fed farming. ALS chemistry works well in early spring weed flushes.
Balochistan:
Dry climate with limited moisture. Use Umbra after rainfall or irrigation when weeds are actively growing for best results.
FAQs
How does Umbra control weeds in wheat?
Umbra blocks the ALS enzyme inside weed plants. This stops amino acid production and prevents growth. Weeds slowly dry out and wheat continues healthy growth.
Is Umbra safe for my crop when used correctly?
Yes. Wheat has natural tolerance to the active ingredients. Follow label guidance, use clean water and avoid over application for safe results.
What is the PHI and how should I store Umbra?
The pre harvest interval is 60 to 70 days. Store Umbra in a cool, dry and shaded place. Keep away from food and children.





Abdullah Razal –
I applied Umbra on my wheat field to control annual broadleaf weeds and the results were very effective. The dual ALS chemistry worked quickly, leaving my field clean and supporting healthy crop growth. Application was easy with the convenient pack size, and the wheat grew uniformly without stress. Following the PHI ensured safe harvesting. Umbra is a reliable herbicide for wheat farmers seeking strong and consistent weed control.