Sweet potato ground, potato ground hits what herbicide effect is best? What are the precautions?

With the modernization of agriculture, farmers also use a large number of high-tech products in agricultural production, such as biological pesticides, pesticide mixtures and a series of chemical products, but the most popular pesticide products are herbicides, so the sales of herbicides have always been at the forefront of pesticides. The improper use of herbicides is related to the safety of crop growth. In order to ensure the safe and efficient use of herbicides, the following describes what herbicides are best for sweet potato and potato fields?

Sweet potato herbicide

Sweet potatoes are an important ingredient in northern China. Cut sweet potato strips, dried, made of dried sweet potato, is a very delicious food. Roasted sweet potatoes are also popular and delicious. Most of the weeds in the sweet potato field belong to the grass class, and the broad-leaved leaves are generally not many. Most of the herbicides used in the sweet potato field are also herbicides for the grass class. Some of them should be sprayed first to remove such weeds.

1, potato Daan sweet potato field special (1+1+1) herbicide, not only can control all kinds of grass weeds in sweet potato field, but also can eradicate all kinds of broad-leaved weeds that are extremely difficult to control, completely solving the problem that sweet potato growers cannot control broad-leaved weeds for a long time. Application method: Stems and leaves spray The dosage of this product per mu is 40ml-50ml, that is, each bag (25ml with two bags) is mixed with 15 kg of water, sprayed on half mu of land, two bags per mu, evenly mixed and sprayed on stems and leaves. In case of high temperature and drought conditions, increase the water consumption appropriately.

Second, the special herbicide (1+1+1) for sweet potato field can not only control all kinds of grass weeds in sweet potato field, but also eradicate all kinds of broad-leaved weeds that are extremely difficult to control, completely solving the problem that sweet potato growers cannot control broad-leaved weeds for a long time. 1. Pesticide manufacturers suggest that stem and leaf spray of this product per mu dosage of 40ml-50ml, that is, each bag (25ml with two bags) mixed with 15 kg of water, spray half an mu of land, two bags per mu, stir well after stem and leaf spray, in case of high temperature and drought conditions, appropriately increase water consumption. 2. Annual grass weeds and broad-leaved weeds 3. In case of adverse conditions such as drought and low temperature, it may have a slight impact on the roots and leaves of sweet potato, which can be recovered in a short time without affecting the later growth and final yield of sweet potato.

The new herbicide is the only one-time control of Gramineae, broad-leaved weeds and Cyperaceae weeds in China. It has a unique ternary asymmetric chemical structure and is highly safe for sweet potatoes. The weed cell division and weed death are prevented mainly by inhibiting the biological formation of side chain amino acids in weeds, thus thoroughly solving the weeding problem in sweet potato fields.

4. Metolachlor has been widely used in sweet potato fields due to its wide weed control spectrum, safety to sweet potato and no impact on subsequent crops, and is favored by the majority of sweet potato planting friends. Metolachlor is a selective pre-emergence herbicide of systemic conduction type. It is mainly absorbed by weed sprouts. It lasts 60-80 days and has no effect on subsequent crops. Protilachlor preparations are mostly emulsifiable concentrates, which can effectively control annual grass weeds such as barnyardgrass, goosegrass, crabgrass, Setaria, and broadleaf weeds such as Chenopodium, Amaranthus retroflexus, Abutilon, Solanum nigrum, etc. It has a good inhibitory effect on weeds such as sorghum, cocklebur, purslane, arsetus, etc., but has no effect on weeds such as field convolvulus. The sweet potato ditch is closed, the soil is crushed, the wheat stubble field should be cleaned of the remaining wheat rhizomes, after the sweet potato seedlings are transplanted, 60- 80ml (sand land) or 80- 100ml (clay, loam land) of 96% metolachlor emulsifiable solution is taken per mu, 45- 60kg of clear water is mixed, the whole field is evenly sprayed, and the weeds in the whole sweet potato growth cycle can be controlled by applying the medicine once.

potato herbicide

Potatoes are a high-yielding crop, and in some places they are eaten as a staple food. Because of the different planting systems of potato in China, the sowing time is not consistent, and the occurrence law of weeds in the field is also different. For example, when potatoes are sown in the first ten days of March in the open field in the north, the grass emergence peak is generally in the middle and late March, and the grass emergence amount accounts for about 60% of the total weed amount in this period. This batch of weeds compete fiercely with potatoes and are the main body of grass damage.

1. Soil treatment of potato fields dominated by grass weeds

1. Trifluralin is a selective internal absorption and conduction soil treatment agent. After sowing and before emergence, spray 48% trifluralin EC 100-125 ml (commercial quantity, the same below) on 667 square meters and 40-50 kg water evenly on the soil surface. It has excellent control effect on annual grass weeds such as crabgrass, goosegrass, green bristlegrass, barnyard grass, euphorbia, bluegrass and hard grass, and also has good control effect on broadleaf weeds with small seeds such as purslane, chenopodium, amaranth and veronica. However, attention should be paid to: 1) accurately grasp the dosage, and strive to spray evenly. 2) The soil preparation should be fine. If the soil preparation is not fine, the weed seeds in the soil blocks will not contact the pesticide, and the soil blocks can still grow grass when they are scattered in the rain. 3) Trifluralin is easy to decompose and lose efficacy. After application, it should be mixed with soil immediately. The drug should be mixed into the soil. Generally, it is required to finish mixing the soil within 8 hours after spraying. 4) Trifluralin has a long residual period after being applied to soil, so it is not suitable to plant sensitive crops such as sorghum and rice in the next crop.

2. Tianbu is a selective systemic conductive soil treatment agent. After sowing and before seedling, pesticide is applied. 667 square meters are sprayed with 33% Tianbu EC 150- 200ml. 40- 50kg water is evenly sprayed on the soil surface. It can effectively control annual grass weeds and some broadleaf weeds such as barnyardgrass, crabgrass, green bristlegrass, early grass, wheat, purslane, chenopodium, polygonum, etc. Attention should be paid when using: 1) In case of drought, 3-5 cm of soil should be mixed to improve the control effect;2) Avoid direct contact between seeds and chemicals;3) The effect of field supplement on grass weeds is better than that of broadleaf weeds. Therefore, in fields with more broadleaf weeds, it can be considered mixed with other herbicides.

3. Napropamide and dahuili are selective endoscopical soil treatment agents. They are applied after sowing before seedling or transplanting and before weed germination. 200- 300g of 20% Napropamide EC or 100- 150g of 50% Dahuili WP are evenly sprayed on the ground surface of 667 square meters, and 40- 50kg of water is sprayed. It has good control effect on annual grass weeds such as barnyard grass, crabgrass, gooseberry grass, sphagnum chinense, setaria grass, bluegrass, etc. It also has certain effect on broadleaf weeds such as purslane, chenopodium, stellaria, polygonum, etc. Note when using:

1) Anachlor has good weeding effect under wet soil conditions. If the soil is dry, irrigation should be applied first to improve the control effect.

2) Napropamide has poor effect on unearthed weeds, so it should be applied early and the unearthed weeds should be cleared before use.

Pre-medication, 667 square meters with 48% dinoseamine EC 150-200 ml evenly sprayed on the surface of 60 kg water, can effectively control barnyardgrass, goosegrass, crabgrass, Setaria, Amaranthus, Chenopodium, purslane and other annual grass weeds and some broad-leaved weeds.

II. Soil treatment of potato fields dominated by broadleaf weeds

Sekazin selective internal absorption conductivity type soil treatment agent. After sowing and before emergence, 667 square meters of soil can be sprayed evenly with 70% sechem WP 25- 65g to 40- 50kg of water, which can control various broadleaf weeds and some grass weeds, such as Chenopodium album, Polygonum multiflorum, Portulaca oleracea, Ixeris chinensis, Stellaria chinensis, Xanthium sibiricum, Barnyardgrass, Setaria chinensis, etc. It should be noted that after application, it is easy to produce phytotoxicity when there is heavy rainfall or flood irrigation.

III. Soil treatment of potato fields mixed with gramineous weeds and broadleaf weeds

1. Chlorotoluron is a selective endoscopic-conductive soil treatment agent. It can be sprayed evenly on the soil surface with 25% chlorotoluron wettable powder 250- 300g for 667 square meters and 40- 50kg water before seedling and bud emergence of weeds. It can effectively control many kinds of grass and broadleaf weeds such as Alopectiniae, Stellaria, Poa pratensis, Setaria, Digitaria, Barnyardgrass, Amaranthus, Chenopodium album, Veronica, etc. Field convolvulus effect is poor. Note when using: 1) The soil is moist, which is conducive to the efficacy. 2) It remains in the soil for a long time and decomposes slowly. It is not suitable to plant sensitive crops in the next crop to avoid phytotoxicity. 3) Chlorotoluron is poorly soluble in water. When using, the wettable powder should be stirred with a small amount of water, and then diluted with water.

2. Guo 'er is a selective contact herbicide for soil treatment and post-seedling treatment of stems and leaves. 667 square meters with 24% fruit emulsifiable concentrate 40-50 ml evenly sprayed on the soil surface of 60 kg water, can control barnyardgrass, gold, goosegrass, Setaria, Alopecurus, Lepidium, Poa, purslane, amaranth, Chenopodium, Veronica, Chenopodium, such as annual weeds, but the effect on perennial weeds is poor. Note when using: 1) When using for the first time, small-scale experiments should be carried out according to different climatic zones to find out the best application method and optimal dose suitable for local use, and then use it on a large scale. 2) Fruit is a contact herbicide, spraying should be uniform and thoughtful, after spraying, do not destroy the film layer, and the dosage should be accurate.

3. And weeds before emergence to 3-4 leaf stage, 667 square meters with 50% lyuron WP 100-125 g, 40-50 kg water evenly sprayed on the soil surface, can control a variety of broadleaf weeds and grass weeds, such as Setaria, goosegrass, crabgrass, barnyardgrass, amaranth, chenopodium, cocklebur, amaranth, purslane, Abutilon, Galium, Polygonum, etc. Attention should be paid when using: 1) When the soil organic matter content is less than 1% or higher than 5%, this agent should not be used. 2) Sandy soil or rainwater should not be used when it is heavy.

4. Phlorazuron is a selective endoscopic-conductive soil treatment agent. It can be applied before seedling emergence or transplanting, before emergence of weeds to 1.5 leaf stage. 667 square meters of 50% Phlorazuron WP 100- 200g (low amount for sand and high amount for clay), evenly sprayed on soil surface with 40- 50kg water, and can control annual grass weeds and broadleaf weeds such as crabgrass, barnyardgrass, goosegrass, Setaria, bluegrass, amaranth, Chenopodium, Stellaria, etc. Note when using: irrigation can improve the efficacy.