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Somethings You Should Know About Broadleaf Weed Control
2021/12/22 11:16:08

Somethings You Should Know About Broadleaf Weed Control


Even with proper weed control, we still be bothered by an occasional weed or two, the majority of which are in the form of broadleaf weeds. So how do you beat them? It’s simple: knowing who your enemy is. And this article will give you a better understanding of broadleaf weed control.

How to Identify Broadleaf Weed

  • Broadleaf weed seedlings, in contrast to the grasses, usually have wider leaves with net-like venation.

  • Broadleaves are dicots and have two cotyledons or seed-leaves. These usually emerge above the soil and expand to become the first visible “leaves.” The true leaves then develop above the cotyledons. However, in some broadleaf species, the cotyledon (seed) remains in the soil and the plumule (growing point and cluster of undeveloped true leaves) emerges above the soil line.

  • The shape and size of the cotyledons and first true leaves vary considerably among species.

  • Leaves may be alternate or opposite in arrangement on the stem. In some cases, the second leaf may appear so closely behind the first leaf that they appear to be opposite but later prove to be alternate.

  • The true leaves of broadleaf weeds usually have a petiole (leaf stalk). However, in some species, the true leaves may be sessile (without a leaf petiole).



Life cycles

Broadleaf weeds are divided into groups by their life cycles: annuals, biennials and perennials

Annuals: Annuals germinate from seed, grow, mature and die in less than 12 months.

Biennials: Biennials reproduce from seed and complete their life cycle in two years. Biennials form rosettes and store food in their fleshy roots the first year, and then flower the second year.

Perennials: Perennial weeds live more than two years. They may reproduce from seed or from vegetative structures such as roots, rhizomes, stolons, tubers, corms or bulbs. This ability to reproduce vegetatively makes perennials more difficult to control.


The optimum time to control weeds depends on the type and life cycle of the weed and, in some cases, the specific weed and specific herbicide, so the optimum time to control weeds is a complex answer. 

  • Pre-emergent herbicides are applied before weed seeds are able to germinate. Pre-emergent herbicides work well for controlling certain types of annual broadleaves, but have a very narrow window for application in order to be effective. 

  • Post-emergent herbicides are applied to weeds that have already emerged. Even with post-emergent herbicides, timing is important. It’s best to catch the weed while it’s still young, as mature weeds will require a larger volume of herbicide, which could cause harm to the crop.

  • It’s also important to note that post-emergent herbicides don’t provide instant gratification. It may be several days before the herbicide reaches its full effectiveness. In the meantime, you’ll need to avoid mowing or cutting the weeds, which could blunt the herbicide’s effect. 


Water quality

The quality of the water in herbicide applications is often overlooked. Water pH and hardness can affect weed control, but exactly how much depends and the weed and the herbicide chemistry. Research clearly shows that the quality of water used for spraying can affect how herbicides perform.



There are a number of herbicides on the market that contain phenoxy herbicides such as 2,4-D, mecoprop (MCPP), 2,4-DP (dichlorprop) and MCPA, as well as the benzoic acid dicamba for use in broadleaf weed control. Phenoxy herbicides specifically work to control broadleaf weeds. These ingredients make up the majority of what are commonly referred to as “three-way” herbicides with 2, 4-D, MCPP and dicamba serving as the core three ingredients.

2, 4-D

2, 4-D is a common ingredient in many broadleaf herbicides. While 2, 4-D is great for controlling dandelion, plantains, curly dock and many other broadleaf weeds.

                                                                                                 2,4-D 500GL SL                   2,4-D 720GL SL

What is 2, 4-D?

2, 4-dichlorophenoxyacetic acid (2, 4-D) is the first herbicide to be commercially developed, which is a selective, systemic, and plant growth regulator herbicide used for post-emergent control of weeds.

2, 4-D is a hormone-based herbicide with the advantages of wide weed control, thorough weed control, easy to mix and match, not easy to develop resistance, and cost-effective. Although it has been promoted and applied for nearly 80 years, 2, 4-D is still one of the best and the cheapest herbicide species till now. It is very popular and widely used in agricultural production. It affects primarily broad-leaf plants. When the treatment occurs, the 2, 4-D is absorbed into the plant and moved to the roots, stems, and leaves. Plants begin to die in a few days to a week. And treatments should be made when weeds start to threaten plant growth.

How is 2, 4-D work?

2, 4-D kills weeds mainly in three ways:

  1. altering the cell walls plasticity,

  2. influencing the protein synthesis, and

  3. increasing ethylene production.

Is 2, 4-D safe?

2, 4-D is safe for humans, pets, wildlife, and the environment when it is used under the direction of the label and proper labor protection.

How to buy 2, 4-D?

Due to the current global shortage of pesticides, many pesticide prices are rising at an alarming rate.

Fortunately, King Quenson has high quality 2, 4-D at great prices. If you have a need for 2, 4-D, you can contact us at any time:


Tel: 86-755-86612769


Since 2003, King Quenson has been thriving to introduce the latest technologies to agricultural industries and farmers to achieve mutual development and prosperity. With years of dedication and rich experience, King Quenson devotes more than 18 years to crop protection and offers solutions.


In conclusion, if you understand the life cycle of these weeds and the best time to control them, if you choose the right herbicide and formulation, and if you have good water quality, you will be very successful in controlling your broadleaf weeds.

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