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Glyphosate and Glufosinate, Two Herbicides Compared.

1. Different modes of action

Glyphosate is a systemic broad-spectrum biocidal herbicide, which is transmitted to the underground through stems and leaves.

Glufosinate-ammonium is a non-selective conduction type herbicide of phosphonic acid. By inhibiting the action of glutamate synthase, an important detoxification enzyme of plants, it leads to disorder of nitrogen metabolism in plants, excessive accumulation of ammonium, and disintegration of chloroplasts, thereby causing plant photosynthesis. Inhibited, eventually leading to the death of the weeds.

2. Different conduction methods

Glyphosate is a systemic sterilizer,

Glufosinate is a semi-systemic or weakly non-conductive contact killer.

3. Weeding effect is different

Glyphosate generally takes 7 to 10 days to take effect;

Glufosinate is generally 3 days (normal temperature)

In terms of weeding speed, weeding effect, and weed regeneration period, the field performance of glufosinate-ammonium is excellent. As the resistant weeds of glyphosate and paraquat become more and more serious, farmers will It is easy to accept due to its excellent control effect and good environmental performance. Tea gardens, farms, green food bases, etc., which require more ecological safety, have an increasing demand for glufosinate-ammonium.

4. Weeding range is different

Glyphosate has a control effect on more than 160 weeds, including monocotyledonous and dicotyledonous, annual and perennial, herbs and shrubs, but it is not ideal for some perennial malignant weeds.

Glufosinate-ammonium is a broad-spectrum, contact-killing, killing-type, non-residual herbicide with a wide range of applications. Glufosinate can be used on all crops (as long as it is not sprayed on the crops, a cover should be added for inter-row spraying). or hood). Using weed stem and leaf directional spray treatment, it can almost be used for weed control of wide-planted fruit trees, row crops, vegetables and non-arable land; it can quickly kill more than 100 kinds of grass and broad-leaved weeds, especially It has a very good effect on some malignant weeds that are resistant to glyphosate, such as beef tendon grass, purslane, and small fly, and has become the nemesis of grasses and broad-leaved weeds.

5. Different safety performance

Glyphosate is generally sown and transplanted 15-25 days after the efficacy of the drug, otherwise it is prone to phytotoxicity; glyphosate is a biocidal herbicide. Improper use will bring safety hazards to crops, especially using it to control weeds in ridges or orchards When , the drift injury is most likely to occur. It should be emphasized that glyphosate can easily lead to the lack of trace elements in the soil, form a deficiency of nutrients, and damage the root system. Long-term use will lead to yellowing of fruit trees.

Glufosinate can be sown and transplanted in 2 to 4 days. Glufosinate-ammonium is low-toxic, safe, fast, environmentally friendly, top dressing increases production, has no effect on soil, crop roots and subsequent crops, and has a long lasting effect. Drift is more suitable for weeding in corn, rice, soybeans, tea gardens, orchards, etc., which cannot be completely avoided during sensitive periods or droplet drift.

6. Future

The core problem facing glyphosate is drug resistance. Due to the advantages of glyphosate’s high efficiency, 5-10 yuan/mu (low cost), and rapid human metabolism, glyphosate has a long way to go before it can be freely eliminated by the market. In view of the problem of glyphosate resistance, the current mixed use is a good countermeasure.

The market prospect of glufosinate-ammonium is good and the growth is rapid, but the technical difficulty of product production is also high, and the process route is also complicated. There are only very few domestic companies that can produce on a large scale. Weed expert Liu Changling believes that glufosinate cannot defeat glyphosate. Considering the cost, 10~15 yuan/mu (high cost), the price of a ton of glyphosate is about 20,000, and the price of a ton of glufosinate is about 20,000 yuan. 150,000 – the promotion of glufosinate-ammonium, the price gap is an unbridgeable gap.

Post time: Sep-23-2022