Specifications

Kills broadleaf weeds and some annual grasses.

Common Name: Metsulfuron-methyl

CAS NO.: 74223-64-6

Description

Appearance: pure product is colorless crystal(industrial product is off white solid,with ester odor).

Melting Point:158

Vapour Pressure:3.3×10-7mPa

Solubility: 2.79g/L in water,0.58g/L in xylene,7.3g/L in methanol,36g/L in acetone,121g/L in Dichloromethane.

 

Formulation: 95%TC,10%WP,20%WP,60%WP,20%WDG

Application: 

It is applied mainly in wheat, barley, oat,etc.to control most broad-leaf weeds and certain grasses,by either pre-or post-emergence application,at 4~7.5g/ha post-emergence.  

Description

 

Metsulfuron-methyl is a residual sulfonylurea herbicide that kills broadleaf weeds and some annual grasses. It is a systemic compound with foliar and soil activity, that inhibits cell division in shoots and roots. It has residual activity in soils, allowing it to be used infrequently but requiring up to 22 months before planting certain crops (sunflowers, flax, corn, or safflower). It has very low toxicity to mammals, birds, fish, and insects, but is a moderate eye irritant.

 

Introduction

Metsulfuron-methyl is a residual sulfonylurea compound used as a selective pre- and postemergence herbicide for broadleaf weeds and some annual grasses. It is a systemic compound with foliar and soil activity, and it works rapidly after it is taken up by the plant. Its mode of action is by inhibiting cell division in the shoots and roots of the plant, and it is biologically active at low use rates.

 

The most common uses of metsulfuron-methyl include wheat, barley, rye, and pastures. It can be used with other foliar herbicides, and is typically applied on cereals at 0.004 - 0.007 pounds active ingredient/acre, and on non-crop areas at 0.005-0.160 pounds active ingredient/acre.

 

 It is commercially available in the form of dry flowable formulations. Because it has residual activity in soils, it is necessary to allow ample time for the chemical to break down before planting certain crops (22 months for sunflowers, flax, corn, or safflower, and 10 months before planting sorghum). It should not be used on ryegrass or on pastures containing alfalfa or clovers