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The Development of Picloram 100 ED and the Effect of Adjuvant on Deposition in Target

Author: LiuYongLiang
Tutor: ChenFuLiang
School: Chinese Academy of Agricultural Sciences
Course: Pesticides
Keywords: Electrostatic spray Ammonia Chloropyridine acid Electrostatic spray liquid Acetamiprid The amount of deposition
CLC: S491
Type: Master's thesis
Year: 2011
Downloads: 49
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Abstract

Electrostatic spray technology developed in the the ULV and control droplet technology theory and practice on the basis of a new type of pesticide use, reduce the amount of pesticide to reduce droplet drift, to increase droplet deposition, environmental pollution and other small features. The electrostatic spray study focuses on the study of the electrostatic spray equipment, fewer studies have reported on the electrostatic spray formulations electrostatic spray liquid. Presented in this thesis a 10% ammonia chloropyridine acid-static spray liquid and of the 1% the acetamiprid-static spray liquid additives on the physical and chemical properties of the preparation and the amount of deposited. Indicators of low-temperature stability, solvent, solvent and solubilizer preliminary screening, storage stability at low temperature (-5 ° C ± 1 ° C for 48 hours) to pass the sample flash point, viscosity, evaporation rate, heat storage stability Determination of resistance and other physical and chemical performance indicators, and ultimately determine the 10% ammonia chloropyridine acid electrostatic spraying liquid formulations as N-methylpyrrolidone, dimethyl sulfoxide, N, N-dimethyl formamide is mixed cosolvent to OP- 3 and Nongru 1601 # solubilizer, the C10-heavy aromatics S-200 # solvent. The formulations developed mixed solubilizing cosolvents better in a single co-solvent, and can significantly improve the low temperature stability of the formulation. 10% of amlodipine pyridine acid-static spray liquid active ingredient mass fraction was measured by high performance liquid chromatography. Eclipse XDB-C18 stainless steel column UV absorption detector, detection wavelength 224nm; methanol - water (80:20), add acid to adjust the pH value to 2.5 as the mobile phase at a flow rate of 1mL/min. External standard method for quantitative analysis of sample amlodipine pyridine acid, from 0.05 to 0.23 g / L range linear correlation coefficient of 0.9999, the average recovery was 99.3%, the standard deviation of the sample measured 0.073, and the coefficient of variation was 0.77 %. The acid aqueous 24% ammonia chloropyridine control, controlling E. adenophorum for 10% of amlodipine pyridine acid-static spray liquid electrostatic spray efficacy evaluation. Indoor spraying of pyridine acid electrostatic spray liquid controlling E. adenophorum for of the 10% of amlodipine recommended dose of 300 g ai · ha 24% than the same dose of amlodipine pyridine acid agent in the anti-Eupatorium to improve efficiency more than 20%. The dose than conventional spray spraying 24% ammonia chloropyridine the acid agent controlling E. adenophorum for the recommended dose savings medication about 2 times. , While using a pesticide residual amount detecting the preparation conductivity, viscosity, evaporation rate of change of a mass fraction of 1% acetamiprid electrostatic spraying liquid formulations of the co-solvent N-methylpyrrolidone and the conductive agent Nongru 500 # The method of determination of the amount of deposition, electrostatic spray cosolvents and the conductive agent in the formulation changes in mass fraction of acetamiprid in maize leaves the front and back of the deposition amount. The results showed that the mass fraction of the cosolvent and the conductive agent of the formulation change on the viscosity of the formulation and the evaporation rate has almost no effect, while the conductivity of the formulation is increased as the mass fraction of the two additives to improve and, and N-methylpyrrolidone on conductivity greater than the Nongru 500 #, so you can use the co-solvent instead of the conductive agent to improve the conductivity of the preparation. Deposition amount of acetamiprid in the front and back of the target with both additives improve Quality Score showed an increasing trend, comparing the deposition amount of the measurement results, N-methyl pyrrolidone was significantly higher than in the front and back of the targets the Nongru 500 #, so you can use the co-solvent instead of the conductive agent to increase the amount of deposition. Statistical analysis, of two additives mass fraction changes in deposit levels had no significant difference, adding an appropriate amount of co-solvent can be achieved by the effect of the electrostatic spray. Using an electrostatic spray spraying 1% acetamiprid amidino electrostatic spraying liquid good outflanking electrostatic effects. Development of the electrostatic spray liquid of 10% ammonia-chloro-pyridin-acid successfully solved the problem of the strong polarity of the active ingredient prepared as oily preparations, oily formulations developed innovative, strongly polar electrostatic spraying liquid active ingredient developed Providing successful experience. By studying the mass fraction of the the electrostatic spray liquid additives changes in deposit levels, for electrostatic spray liquid developed to provide theoretical and technical guidance. Indoor efficacy test and the determination of the amount of deposited prove the superiority of the electrostatic spraying than conventional spray.

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