3.8% anti-milk oil (common name PBO + Acetaniprid) is a new type of bio- insecticide , the active ingredient of which is high-efficiency quick-acting insecticide and PBO. By overcoming the resistance of pests by PBO, the insecticidal action of the active ingredients on the pests is fully exerted, so that the insecticidal effect is remarkable and stable.
The results showed that: 3.8% of the scorpion mites were used to control the fruit tree mites. The average mites mortality rate was 49.3% after 2,000 times of spraying, which was 5.3% higher than 3000 times, 20.8% higher than 4,000 times, and the 4,000 times higher control effect. The results are similar. After 2000 days of treatment, the average mortality rate of aphids was 94.3%, 2.5% higher than 3000 times treatment, 55.3% higher than 4000 times treatment, 4000 times higher than omethoate treatment, and 3 points after spraying. The rate was 2000 times treated with 3.9%, 3000 times for 5%, 4000 times for 25.8%, and omethoate for 20%.
It can be seen from the control effect of apple jaundice that the average mites mortality rate is 52.5% in 3 hours after spraying pesticides in 2000 times, 5% higher than 3000 times, 24% higher than 4000 times, and the control effect of omethoate is 35%, 2000. After 5 days of treatment, the average mortality rate of aphids was 97.3%, which was 2% higher than 3000 times treatment, 60% higher than 4000 times treatment, and 4000 times lower than that of omethoate 13%. After 10 days of spraying, the average damage rate of shoot shoots was treated as 2000% to 3.3%, 3000 times to 3.5%, 4000 times to 31.3%, omethoate to 18%, and clear water to 75%.
According to the China Pesticide Network , 3.8% of the anti-mite effect of the anti-milk oil has obvious advantages over the omethoate, with the characteristics of quick-acting killing, and the long-lasting effect period is long. The use of multiples is 3000 times, and the 2000 times treatment is used. The effect is more than 3000 times, but the difference is not significant and it is not economical to use.
A treatment plant for lake Kinneret water, comprising treatment by two filtration steps, flocculation and disinfection with chlorine dioxide, was studied with a view to evaluating the effect of ClO2 disinfection on drinking water quality and determining the optimal mode of operation for the treatment plant. Four modes of operation were studied and the optimal mode was defined as that in which the flocculant (aluminium sulphate) was introduced before the first, and ClO2 after the second, filtration. The finished water contained a residue of approx. 0.2 mgl−1 ClO2, approx. 0.35 mgl−1ClO2− and low concentrations of suspended matter (1.5 mgl−1) and of chlorophyll (0.1 μgl−1). Trihalomethane concentrations were negligible, and the bacteriological quality of the water was within the health authorities' requirements. It was shown that disinfection of treated water (after flocculation and filtration) was much more effective than that of raw water. Furthermore, disinfection in the optimal mode prevents accumulation of high chlorite concentrations leaving a residue of ClO2.
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