In the last issue of the graphic and text "Living <诗经>in the "Cochineal Grass", but it is the disliked "Cochineal Grass", the countryside is everywhere", Qingjiang Crane gave a detailed introduction to the basic biological characteristics, medicinal and edible value of "Cochineal" Shanglu, as well as the interesting stories of Shanglu. If you are interested, you can climb the stairs to read.
"Rouge Grass" is a story about Shanglu written by the "East China Sea Monks" in the Qing Dynasty based on the mythical story about "Shanglu" in the Book of Songs. Therefore, among the people, people call Shang Lumei "rouge". In fact, it is based on the ripe fruit of Shanglu, which can extract the juice as the "rouge" used by the ancients.
Picture 01~02): Shanglu on a roadside flower bed
Shanglu uses roots as medicine, but most of the Shanglu that is used as medicine is mainly planted artificially. Wild in farmland, orchards and even urban green spaces are regarded as weeds and are disliked. However, with its tenacious vitality and rapid reproduction ability, wild commercial land has become a headache for many field managers.
Because commercial land not only competes with crops for nutrients and water, but also may become a breeding ground for pests and diseases, seriously affecting the growth and yield of crops.
Therefore, the selection of efficient and safe herbicides to control the growth, development and reproduction of commercial land has become an important part of crop management for agricultural producers and horticultural enthusiasts.
In this issue, Qingjiang Crane focuses on and chats with all of you and teachers about what herbicides can be used to effectively control weeds "Shanglu". I hope you like and actively participate in the interactive comments, forward and share the pictures and texts of this issue.
Picture 03~04): Plants on commercial land
Hazards of weeds to crops:
Weeds are known for their adaptability and rapid growth, and can survive in a variety of soil conditions, especially in humid environments.
The root system of Shanglu is well developed, which is difficult to completely eradicate by manual uprooting, and the seeds are easy to spread with the wind, resulting in the infestation of new Shanglu weed plants. Therefore, it is particularly important to find efficient chemical herbicides to replace manual weeding methods.
Effect of glyphosate series herbicides and glyphosate-based series compound preparations on weeds and commercial land:
Glyphosate and its compound preparations have a relatively obvious "sensitive" effect on weeds and are also one of the herbicides commonly selected for weed control.
Picture 05~06): Shanglu's green fruits
For example, 41% glyphosate isopropylamine saline is used at a dosage of 200 ml or 230g per mu. 30% glyphosate aqueous agent, uniform spray, the dosage per mu is 200g~250g.
62% glyphosate isopropylamine saline, evenly sprayed, can be used at a dose of 160~250g per mu. 88.8% glyphosate soluble granules can be used at a dosage of 100~180g per mu, and even spraying stems and leaves can make weeds "commercial land" effectively controlled.
However, if a single herbicide is used in the field for a long time, and the weed "Shanglu" has serious resistance, a series of glyphosate-based compound preparations can be used.
For example, 36% dimethyltetrachlorocyphosate aqueous herbicide. It is by interfering with the synthesis of amino acids in the plant body, which leads to the death of weeds. The herbicide preparation combines the broad-spectrum herbicidal ability of glyphosate with the synergistic effect of dimethyltetrachloride (broadleaf weed), and shows good control effect on stubborn weeds such as Shanglu.
Picture 07~08): Wild commercial land on a green belt
Such herbicides are also 20% glyphosate, chlorofluoropyroxyacetic acid microemulsion, which is a compound herbicide based on glyphosate composed of "glyphosate" and "chlorofluoropyroxyacetic acid". The effect is better than a single dose of "glyphosate" series of herbicides.
When using, it is necessary to pay attention to the recommended dosage to avoid causing harm to non-target plants, so as to avoid the occurrence of "pesticide damage".
The unique advantages of glufosinate-ammonium herbicide on weeds:
As an alternative to glyphosate, glufosinate-ammonium herbicide is favored by agricultural consumers because of its faster speed of action and lower environmental residues.
Glufosinate-ammonium herbicide also acts on the amino acid metabolism pathway of plants to fight and control older weeds in the field, and the effect of using glufosinate-ammonium herbicide to control weeds is better than that of glyphosate series herbicides under resistant weeds and arid environmental conditions.
Picture 09~10): The inflorescence and fruit of Shanglu
For example, 15% glufosinate-ammonium soluble liquid agent is used for the control of weeds in the field (non-arable land) "commercial land", the dosage is 80~120g/bucket of water, and the dosage per mu is 240g~350g (3 buckets of water per mu).
The effect of herbicides containing specific ingredients on the prevention and control of weeds "commercial land":
Because "Shanglu" is a broad-leaved weed, herbicides containing chlorofluoropyroxyacetic acid (ethylhexyl ester), 2-methyl4 sodium chloride (isohexyl ester) or trichloropyroacetic acid can be used to effectively control "Shanglu" weeds in the field (non-arable land and broad-leaved crop plots). The herbicides of these components have extremely high selectivity for broad-leaved weeds such as Shanglu, which can effectively control dicot weeds such as Shanglu, and are relatively safe for gramineous crops.
Its rapid absorption and conduction characteristics make the weeding effect containing these herbicides appear quickly, and it is an effective "miracle" to protect crops from commercial and land hazards.
Picture 11~12): Wild commercial land growing on the roadside
Secondly, in the "commercial land" weeds in corn sorghum and other plots, herbicides containing mesotrione can also be selected to control commercial land weeds. Because mesotrione, with its unique mechanism of inhibiting HPPD enzyme activity, interferes with the biosynthesis of carotenoids in weeds, resulting in albino death of weeds, corn is relatively safe because it can "degrade" these herbicides.
For weeds with strong vitality such as commercial land, mesotrione can provide continuous control effect, especially suitable for the long-term management strategy of "commercial land" in gramineous crop plots.
Scientific selection and safe use of "Shanglu" herbicides:
In the face of the harm caused by weeds to crops, the rational selection of herbicides is the key to ensure the increase of agricultural production and environmental sustainability.
Picture 13~14): Above-ground plants in Shanglu
Glyphosate series herbicides, refined glufosinate, and herbicides containing chlorofluoropyroxyacetate and mesotrione have their own advantages and application scenarios.
It is important to fully understand the characteristics of the product before using these herbicides, follow the instructions for use, and consider the type of crop (broadleaf and grass), growth stage and environmental conditions to ensure that the herbicide is effective while protecting the ecological environment and human health.
Through scientific management and technological innovation, we can more effectively solve the problem of weed hazards caused by commercial land and promote the sustainable development of agricultural production.
Picture 15~16): The fruit of Shanglu