English 
 |
| Quantity: | |
|---|---|
51707-55-2
98%TC, 50%WP, 80%WP, 50%SC
Common name: Thidiazuron
CAS No.: 51707-55-2
Specification: 98%TC, 50%WP, 80%WP, 50%SC
Molecular formula: C9H8N4OS
Structural formula:
Thidiazuron (TDZ) is a diphenylurea synthetic herbicide and plant growth regulator used to defoliate cotton crops and to induce regeneration of recalcitrant species in plant tissue culture.
Description: A herbicide and defoliant plant growth regulator which stimulates ethylene production in some crops particularly cotton.
Main effects: Accelerate ripening, make the leaves fall off, increase yield, and increase quality.
Example plants: Cotton; Mung bean; Melon.
Application （50%WP）
Crop/situation | Defoliation condition | Rate/Ha | Critical comments |
Cotton/Deoliation-first or second spray | Ideal Contitions are hot to warm (30 to 35℃ daytime temperature) and the crop is ready to be defoliated with natural senescence already occurring. Nitrogen and water are almost depleted and there is little or no top growth. A good fruit load is set. | 50- 100 ml | Apply the first spray to cotton which has been grown under good (non-stressed) conditions and is physiologically mature i.e., when the top harvestable boll is mature. Application made prior to boll maturity may result in yield and quality reductions. • Use the lower rates of 50 to 75 mL/ha only under warm early season conditions. • Use the higher rate for denser canopies or to provide a faster response. • A second spray 7 to 10 days later of this product or an alternative harvest aid may be required. |
GOOD Conditions are warm (25 to 30°C daytime temperature) and the crop is ready to be defoliated. Nitrogen and water are low and there is little or no new growth and a good fruit load is set. | 100 to 150 mL | Apply as above, but use these rates under good conditions. | |
AVERAGE Conditions are: (i) warm but night temperatures are dropping to 12°C (not below) and the crop is physiologically ready to defoliate or; (ii) temperature is still hot/warm but the crop is not physiologically ready to senesce. | 50 to 200 mL | Apply as above, but use these rates under good conditions. | |
COLD Night temperatures fall below 12°C and/or mean day/night temperatures fall below 18°C. | DO NOT apply under cold conditions. |
