In 2021, wheat diseases and insect pests are recurring, and these pesticides can be used for early prevention and control.

According to Feng Jinghui’s latest understanding, wheat diseases and insect pests are recurring this year.
Stripe rust is expected to be prevalent in the Hanshui River Basin, the northwestern part of the Huanghuai region, the wheat area in the south of Huanghuai River, and the main wheat producing areas of Huanghuaihai Lake.
It is estimated that 60 million mu; The area of ​​scab disease is estimated to be 90 million acres in the wheat areas of Bumai and northern Huanghuai; the area of ​​scab in Hubei, Anhui, Henan, central and northern Jiangsu is estimated to be 120 million mu; central and northern Henan, southwestern and central parts of the mountains, and Hebei University.
In the wheat area, 200 million mu of aphids will occur at the ear stage
.
Experts suggest that the focus of prevention and control is on stripe rust, head blight and aphids
.
Today, the editor will introduce to you effective control agents
.
Imidacloprid has broad-spectrum, high-efficiency, low-toxicity and low-residue characteristics.
It is not easy to produce resistance to pests.
It is safe to humans, animals, plants and natural enemies.
It has multiple drug effects such as contact killing, stomach poisoning and internal inhalation
.
The quick-acting effect is good, and it has a higher control effect within 1 day after the medicine, and the residual period is as long as 25 days
.
The efficacy of the medicine is positively correlated with the temperature, and the high temperature has a good insecticidal effect
.
Generally, 40 ml of water is mixed with 300-400 ml of water to coat 30-40 kg of seeds/mu
.
Dinotefuran third-generation nicotinic insecticide
.
It has the characteristics of high efficiency, low toxicity, wide insecticidal spectrum and long lasting time.
The lasting period is 3-4 weeks.
It is currently the world's 5 types of insecticides (organophosphates, carbamates, pyrethroids, pyrethroids, etc.
).
Organochlorines, neonicotinoids) have the largest sales
.
Acetamiprid chlorinated nicotine compounds are a new type of insecticide
.
Stomach toxicity and strong osmotic effect, quick insecticidal effect, low dosage, high activity, wide insecticidal spectrum, lasting effect for 15-20 days, and good environmental compatibility
.
The dosage of wheat aphids is 13.
5-27 g/ha (equivalent to 3% acetamiprid EC 30-60 g/mu)
.
Thiamethoxam second-generation nicotine high-efficiency and low-toxic insecticide has stomach toxicity, touch and systemic activity to pests, and is used for foliar spray and soil root irrigation
.
Note that this agent cannot be mixed with alkaline agents, and cannot be stored in an environment lower than minus 10°C and higher than 35°C
.
A kind of insecticide in the neonicotinoid of clothianidin, it has contact killing, stomach toxicity and systemic activity, high efficiency, broad spectrum, low dosage, low toxicity, long lasting effect, no harm to crops, It has the advantages of safe use and no cross-resistance with conventional pesticides, and it may become a world-wide large-scale insecticide species
.
It can also be used to control Hemiptera, Coleoptera, Diptera and certain Lepidoptera pests on rice, vegetables, fruit trees and other crops such as aphids, leafhoppers, thrips, and planthoppers
.
The sulfoxaziram sulfoximine insecticide can effectively control juice-sucking pests that are resistant to nicotine, pyrethroid, organophosphorus and carbamate pesticides, and has low toxicity to non-target arthropods.
The preferred agent for integrated pest control
.
Control wheat aphids 2.
6-3.
3 g/mu with 30-45 kg of water, spray stems and leaves, and when the population density is high, consider combining with other contact pesticides for control
.
Lambda-cyhalothrin is also called lambda-cyhalothrin and cyhalothrin
.
Wheat aphids control 20ml/15kg water spray
.
Wide insecticidal spectrum, high activity, rapid efficacy, resistance to rain washing after spraying, but easy to develop resistance to it after long-term use.
It has a certain control effect on pests and mites of piercing and sucking mouthparts, but it is used for mites.
The dosage should be increased by 1-2 times compared to the conventional dosage
.
It is also suitable for pests of peanuts, soybeans, cotton, fruit trees and vegetables
.
Pymetrozine is a new pyridine heterocyclic insecticide with high efficiency, low toxicity, high selectivity, and environmental and ecological safety.
Its preparation can be used to control most of the homopteran pests, especially the Aphididae, whiteflies and leaf insects.
subjects such as cicadas
.
Suitable for vegetables, rice, fruits and various field crops
.
Use 5-10 grams of 50% pymetrozine WDG for the prevention and control of wheat aphids per mu
.
The above-mentioned agents can be used for aphid control in Huanghuaihai and other places
.
Triadimefon is a triazole fungicide with high efficiency, low toxicity, low residue, long lasting effect and strong systemicity
.
Effective against rust, powdery mildew, moiré and leaf blight
.
100 kg of seeds can be mixed with 30 grams of active ingredients (200 grams of 15% wettable powder), or 8.
75 grams of active ingredients (35 grams of 25% EC) per mu, or 15 grams of active ingredients (60 grams of 25% EC).
75-100 kg of water spray
.
Tebuconazole is used as a highly effective systemic fungicide for seed treatment or foliar spraying of important economic crops
.
For every 100kg of wheat seeds, dress the seeds with 2% dry mix or 100-150g of wet mix (2-3g of active ingredients)
.
Epiconazole wheat, barley, rice, sugar beet, rapeseed, legumes, vegetables, grapes and apples can all be used in this medicine
.
Hexaconazole is a triazole fungicide.
It uses 5% suspending agent per mu, and the dosage is about 90-110 ml.
Spray can prevent and control wheat rust
.
Propiconazole is used to prevent wheat powdery mildew and stripe rust.
Use 32-36 ml of 25% EC at the booting stage to spray water; to prevent wheat root rot, seed treatment can be carried out, with 0.
12%-0.
16% of the weight of the seed mixed with medicine, and applied in the field.
Use 35-40 ml per mu during the heading and blooming period of wheat.
Spray the water and apply the medicine again every 7-10 days if necessary
.
Use controllable vigorous seedlings to grow vegetables in greenhouses in summer, and the effective period is as long as 15-35 days
.
Triadimefon, tebuconazole, epoxiconazole, hexaconazole, and propiconazole can be used in the spring endemic areas of Huanghuaihai wheat stripe rust
.
In the areas where wheat head blight is common in the Yangtze River Basin, Jianghuai River, and southern Huanghuai River, when it is rainy and long-term with condensation, apply the medicine again 5-7 days after the first application for the second control
.
Incidental areas such as northern Huanghuai and North China seized the flowering period of wheat for timely medication prevention
.
Cyanoxystrobin, tebuconazole, prothioconazole and other agents and their compound preparations can be used locally in the middle and lower reaches of the Yangtze River, Jianghuai, and Huanghuai
.
As far as possible, use ultra-fine powders and colloidal suspensions that are resistant to rain erosion in the formulation of pesticide products
.
Source: Pastoral Enlightenment