What types of herbicides are there for lambsquarters?
Lambsquarters, also known as goosefoot, with aliases such as wild lambsquarters and grey knotweed head grass, is an annual herbaceous plant of the Chenopodiaceae family. It mainly grows in fields, field edges, roadsides, in front of and behind houses, and so on. It is a crop that many farmers dislike. So what types of herbicides are there for lambsquarters?
1. Types of herbicides for lambsquarters
The control of lambsquarters mainly depends on which crop it is used for. Different crops use different herbicides, and it is necessary to ensure that the herbicide used is harmless to the crop. Herbicides should be used according to the actual situation.
For broadleaf weeds in wheat fields, for example, carfentrazone + tribenuron-methyl + MCPA can basically control all broadleaf weeds in wheat fields. Fluroxypyr + tribenuron-methyl + MCPA-sodium can also be used for spray control. Spray before winter after the 3-leaf stage of wheat, when the average temperature is above 10 degrees. If the temperature is low now, the pesticide can be applied before wheat jointing.
2. Characteristics of lambsquarters
1. Plant: annual herb, 30-150 cm tall. Stem erect, stout, with stripes and green or purple-red color bands, much branched; branches ascending obliquely or spreading.
2. Leaves: leaf blade rhombic-ovate to broadly lanceolate, 3-6 cm long, 2.5-5 cm wide, apex acute or slightly obtuse, base cuneate to broadly cuneate, upper surface usually without powder, sometimes the upper surface of young leaves has purple-red powder, lower surface more or less powdery, margin irregularly serrate; petiole nearly as long as the leaf blade, or 1/2 the length of the leaf blade.
3. Flowers: flowers bisexual, flower clusters arranged on the upper part of the branches into spike-like paniculate or paniculate inflorescences, large or small; perianth segments 5, broadly ovate to elliptic, with longitudinal keels on the back, powdery, apex or slightly concave, margin membranous; stamens 5, anthers exserted from the perianth.
4. Fruit: pericarp adnate to the seed. Seed horizontal, biconvex-lens-shaped, 1.2-1.5 mm in diameter, margin obtuse, black, glossy, surface with shallow grooves; embryo annular. Flowering and fruiting period May-October.