Jan. 30, 2019
Are you still troubled by the difficulty of controlling resistant diploid pupae?
Bangsheng "Science Invincible"-Dedicated to Resisting Dimerization!
In the first half of 2018, the early rice cultivars of Zhejiang Province had serious occurrence and the resistance increased rapidly, and many pesticides had not been effective in controlling the cultivars. In response to this situation, our company deployed ahead of schedule and conducted test demonstration arrangements at multiple locations to test the defense effectiveness of the "invincible Shi" antagonizing the second slug.
As a reputable plant protection expert in Zhejiang Province, Mr. Dong Taohai has also joined the team to test the effect of Shi Wudi's resistance to the cockroach, and it has been proved by the experimental data that "Shi Wudi" has a good control effect!
The details of the test are as follows:
There are 4 treatments in this test.
1. 10% application of invincible suspension agent 50ml / mu;
2. 5.7% Escapement (A-dimensional salt) 100ml / mu;
3. 20% Kangkuan suspending agent 15ml + 5% Qi Jue (Avi) 50ml;
4. Blank control area (CK).
The area of each application area is 182 square meters, and the area of CK area is 308 square meters. Except for processing factors, other management measures are consistent.
Test location: Shaoxing Plain rice field (contracted fields of Huanglin brother household of Hanjialou Natural Village, Wuhe Village, Yuecheng District, Shaoxing),
Test type: direct seeded early rice, variety "Zhongjiazao 17".
Sowing time: On April 12, the seeding rate was 6.5㎏ / mu, and the rice seedlings belonged to the early hair type.
Experimental field environment: To the south is the winter idle field of hybrid rice planted last year, and there are certain sources of diploid maggots.
Application time: spray when the discolored leaf sheath in the field is first seen (May 19th, that is, the first-generation larvae of the second generation pupae hatch from the first instar stage)
Application method: a knapsack electric sprayer is used, and the spraying liquid volume per mu is 30㎏. The irrigation layer in the field is about 3mm, and the water is retained for 3 days after the medicine.
When the test solution is prepared in the application area, add 50ml / mu of bactericide "Aike" and 18ml / mu of organic silicon auxiliary agent per mu.
Examination effect: The prevention effect was examined at 11 days and 22 days after application.
Weather conditions: The weather was cloudy and windless at the time of application, and the application ended at 9:45. The light rain began 1 hour after the treatment, and turned to intermittent light to moderate rain at noon; the rain time on the day after the application was about 3 hours.
The thunderstorm weather is 1 to 2 days after the application;
The weather was cloudy on the 3rd day after application.
Overall, the weather was relatively bad after the application.
The test results are as follows:
Shi Wudi (10% carbamazepine SC) was administered in a timely manner from the peak of egg hatching to the 1st instar larvae in the middle of pupae, showing a good control effect, a long-lasting effect, and effective control of The harm of pupae to rice was good in protecting seedlings.
The overall control effect is better than that of the common formula Kangkuan + Avermectin; it is suitable as one of the current alternative agents for the treatment of resistant pupae, and it is demonstrated and promoted in production.
Many friends from dealers also actively tested the control effect of Shi Wudi on Erhuan. They were surprised and incredible when they saw such an excellent control effect. For this reason, Professor Gao Congfen of Nanjing Agricultural University explained to everyone why the control effect of Shi Wudi (10% Avicinol-Beerazine SC) is not normal. The main reasons are:
1. Mix pesticides with different action mechanisms to delay resistance;
2. Screening of indoor formula: Methocarbamate: Methofenozide = 1: 1, the total toxicity coefficient is 186, which is much greater than 120, and the synergistic effect is significant;
3. With the increase of the content of methanoate, its photolysis rate gradually decreases, and the holding period is prolonged.
In the case of 50mL per mu and 2 buckets of water
10% Methotrexate: Beetle Hydrazine (1: 1) Dosage of Methotrexate 82.8mg / L
20% Methotrexate: Beetle Hydrazine (2: 18) Dosage of Methotrexate 6.6 mg / L
9% Methotrexate: Beetle Hydrazine (1: 8) Methotrexate 16.6 mg / L
According to Professor Gao, the residual concentration of active ingredients of metavinic salt varieties with low content was close to zero about 4 days after application in the application process, while the residual concentrations of high content varieties were still lower than The initial residual concentration of metformin compound is much larger. It is conceivable that the difference between different formulas is very large, "Shi Wudi" is indeed a more suitable alternative medicine for the prevention and treatment of resistant dioxin.
What should we pay attention to in the application of "Shi Wudi" in the control of rice resistant diploid? Professor Gao pointed out:
Use during peak egg hatching;
The dosage is 50 g / mu, 2 buckets of water;
It is advisable to take the drug on a sunny evening, and it can be used all day on a cloudy day;
The results were checked more than 10 days after the medicine.
What are you waiting for to see such an excellent product?