Thyaphos 500 EC nematicide for controlling root-knot nematodes 1 liter
189ر.س
Product description
Thiafos 500 EC, nematode device pesticide, a powerful device belonging to the group of organic phosphorus compounds, and used to combat root-knot nematodes that cause clear damage in vegetable crops and field crops, especially when they spread in the soil around the root zone. The product contains the active ingredient Fosthiazate at 50% W/V, a specialized active substance in fighting nematodes inside the soil. The pesticide works by absorption through the roots and transfer inside the plant, helping to limit nematode activity and reduce their damage during early growth stages, especially when used before planting or at the beginning of the season according to the label instructions. Thiafos 500 EC is a suitable option within agricultural pesticide programs, especially in lands showing weak growth, yellowing, stunting, or bumps and swellings on the roots due to nematode infection. It can also be used as part of pest control solutions when a product specialized in soil and root pests is needed.
Specifications of Thiafos 500 EC, nematode pesticide
Trade name: Thiafos 500 EC
English name: Thiafos 500 EC
Product type: nematode pesticide, phosphorus-based device
Active ingredient: Fosthiazate
Concentration: 50% W/V
Formulation: emulsifiable concentrate EC
Target use: root-knot nematodes
Suitable crops: vegetables and field crops
Capacity: 1 liter
Country of origin: Saudi Arabia
Manufacturer: Astrachem Company – Astra Industrial Complex for Fertilizers and Pesticides
Pre-harvest interval: no specific interval because it is used before planting
Advantages of Thiafos 500 EC for fighting root-knot nematodes
Helps in combating root nematodes in vegetables and field crops.
Contains Fosthiazate at 50%, a specialized active substance against nematodes.
Absorbed through the roots, supporting early crop protection.
Its effect extends inside the soil to help reduce nematode numbers for a suitable period.
Can be used before planting or several days after, according to technical recommendations.
Helps reduce nematode damages such as weak roots, stunting, yellowing of leaves, and poor water and nutrient absorption.
A national product with appropriate quality for specialized agricultural use.
Uses of Thiafos 500 EC in soil and roots
Used in lands affected by nematode infections, especially when symptoms of weak roots or reduced growth appear despite adequate irrigation and fertilization.
Main uses:
- Fighting root-knot nematodes in vegetable crops.
- Using it in field crops exposed to nematode infections.
- Protecting the root zone at the beginning of planting.
- Reducing the impact of nematodes on water and nutrient absorption.
- Supporting better root growth when applied as part of an integrated soil management program.
Since nematodes are often linked to soil and root health, the control program can be supported with suitable soil improvement products from the soil and media section, along with the use of the specialized pesticide when there is actual infection or a history of infection in the land.
Method of use of Thiafos 500 EC
Based on the attached data, Thiafos 500 EC is used at the following rate:
- Dose: 2 to 5 liters per hectare depending on the severity of the infection.
- Mix with irrigation water before planting or shortly after planting, within 2 to 6 days.
- Mix the appropriate amount of pesticide with water and distribute evenly on the soil.
- When used before planting, it is recommended to till the soil after treatment to improve pesticide distribution.
- It is preferable that the soil is moist to a suitable degree before treatment to improve solution spread in the root zone.
- The final dose should be determined based on infection severity, crop type, soil nature, and irrigation method.
- It is not recommended to use it randomly without a clear diagnosis of the nematode problem.
Best timing for using Thiafos 500 EC
The best timing for using Thiafos 500 EC is before planting or at the beginning of the crop growth stages, because nematode control is more effective when their activity is reduced before a large root system develops.
In lands with a history of root-knot nematode infection, it is preferable to include the pesticide in the soil preparation program before planting, with attention to improving drainage, avoiding the transfer of contaminated soil, and using healthy seedlings as much as possible.
Pre-harvest interval
There is no specific pre-harvest interval for the product according to the attached data, because it is used before planting or at the beginning of soil preparation. However, adherence to the label instructions is essential, and it should not be used in a manner contrary to the timing or recommended dose.
Precautions for using Thiafos 500 EC
Only use under technical supervision or by a specialist when possible.
Read the full product label before preparation and use.
Wear gloves, mask, goggles, and protective clothing during handling of the pesticide.
Entry of workers into the treated area is prohibited for 48 hours after application.
Do not mix randomly with other pesticides or fertilizers without verifying compatibility.
Do not use near water sources or fish ponds.
Keep away from children, animals, and food sources.
Store in a cool, dry, shaded place.
Do not reuse the empty container for other purposes.
Wash used tools thoroughly after finishing.
Why do nematode control require a specialized product?
Nematodes are pests that are difficult to detect early because they live in the soil and attack roots directly. Symptoms may appear on the plant as yellowing, weak growth, midday wilting, poor response to fertilization, or reduced production. Upon examining the roots, clear galls or swellings may appear, which are common signs of root-knot nematodes.
Therefore, it is not enough to deal only with the visible symptoms; the problem must be managed from the root and soil area. Using a nematode pesticide like Thiafos 500 EC helps reduce infection pressure when applied at the correct timing, combined with good agricultural practices such as soil improvement, crop rotation, removal of infected plant residues, and monitoring root health throughout the season.
Frequently Asked Questions
- What is the active ingredient in Thiafos 500 EC?
It contains Fosthiazate at 50% W/V.
- Is Thiafos 500 EC intended for fighting root-knot nematodes?
Yes, it is used to combat root-knot nematodes in vegetables and field crops according to the label instructions.
- When should Thiafos 500 EC be used?
Before planting or shortly after, within 2 to 6 days, according to technical recommendations and infection severity.
- What is the dose of Thiafos 500 EC?
The dose mentioned in the attached data is from 2 to 5 liters per hectare depending on infection severity.
- Does the product require tillage after use?
When used before planting, tillage after treatment is recommended to improve pesticide distribution inside the root zone.
- Is there a pre-harvest interval for the product?
No, there is no specific pre-harvest interval according to the attached data, because it is used before planting, but full adherence to label instructions is necessary.
Marketing conclusion
If your land suffers from weak growth related to root problems or root-knot nematode infections, then Thiafos 500 EC with a capacity of 1 liter is a specialized option for controlling nematodes in the soil when used at the correct timing and recommended dose. You can complete your needs from the Saudi Seeds store and choose suitable pesticides and soil products according to crop type and infection nature.
Related sections
Agricultural pesticides, pest and pest control, soil and media, agricultural sprayers, Bridger 200 SC, insecticide for aphids and thrips, 1 liter




