How Pendimethalin Delivers Effective Pre-Emergence Weed Control in Field Crops

Introduction

Pendimethalin is a widely used pre-emergence and early post-emergence herbicide that controls annual grasses and some broadleaf weeds. It is extensively applied in crops such as soybean, cotton, rice, wheat, and vegetables to reduce weed competition and improve yields.

Product Information

• Name: Pendimethalin

• Chemical Name: N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine

• CAS Number: 40487-42-1

• Appearance: Yellow to orange liquid or crystalline solid

• Formulations: EC (Emulsifiable Concentrate), CS (Capsule Suspension), GR (Granule)

• Mode of Application: Soil application (pre-plant incorporation, pre-emergence, or early post-emergence)

Key Features

• Pre-emergence herbicide that prevents weed seed germination

• Effective on annual grasses and select broadleaf weeds

• Long residual activity, maintaining weed-free fields for weeks

• Works across multiple crops with good crop selectivity

• Reduces the need for post-emergence weeding operations

Applications

Pendimethalin inhibits cell division (mitosis) in the root and shoot tips of germinating weed seeds, preventing their emergence while allowing crop plants to grow unharmed.

Advantages

• Broad-spectrum grass and broadleaf weed prevention

• Residual control reduces early-season weed pressure

• Compatible with mechanized and manual farming systems

• Reduces the need for frequent weeding and herbicide applications

Limitations

• Ineffective on emerged weeds

• Requires adequate soil moisture for activation

• Potential for crop injury if overdosed or misapplied

• Resistance concerns with repeated, single-mode-of-action use

FAQs

Q: Can pendimethalin be mixed with post-emergence herbicides?
A: Yes, it is often used in programs with glyphosate, atrazine, or other herbicides for season-long control.

Q: How long does its residual effect last?
A: Typically 4–6 weeks, depending on soil type and weather conditions.

Q: Is pendimethalin safe for transplanted crops?
A: Yes, when applied before transplanting or as a directed spray, it is safe for several transplanted vegetables.

Conclusion

Pendimethalin is an effective pre-emergence herbicide that provides long-lasting weed control across diverse crops. Its soil-applied action helps prevent weed competition early in the season, boosting crop establishment and yield potential.