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Pesticide application methods
Público: Heben   |    Fecha y hora:2011-12-05    |    Click:

According to the current pesticide processing different types of formulations, application methods are not the same, the commonly used method has the following 16 kinds.
( 1) dusting method. Dusting is the use of mechanical power generated by low concentrations of fine soil or used for diluting the good pesticide powder blowing to crop and control objects on the surface, it is a relatively simple method of pesticide use. But the requirements of spraying uniformity, thoughtful, make crop and plant diseases and insect pests of the surface is covered with a thin layer of powder medicine. Gently touch the blade can see a little powder should be on his fingers. Dusting method has the advantages of convenient operation, tool: relatively simple; the work efficiency is high; the without water, without water restrictions, can be timely prevention; it is generally difficult to crop phytotoxicity. But there are also some disadvantages : 1 powder is easy to be blown and easy to be washed by the rain, therefore, powder attached on the crop body is reduced, shortening the medicament residual effect period, reduces the effect of prevention and cure. The unit dose consumption more, in economy than spray come save. The pollution of the environment and the body itself.
( 2) spray method. The cream, milk powder, colloidal suspension agent, soluble powder, water and wettable powder and other pesticide formulations, for a certain amount of water mixed modulation, namely can become homogeneous emulsion, aqueous solutions and suspensions, using spray so that liquid into small droplets. The droplet size, spray water pressure with height, nozzle aperture size and shape, depending on the size of the swirl chamber. Usually the pressure bigger, smaller swirl chamber nozzle aperture, the smaller, then out of the fog atomizing with smaller diameter. Coverage density of droplets is larger and because the EC, milk powder, colloidal suspension agent and wetting agent spread, adhesion than powder is good, not easy to be rain water leaching, long residual activity, and pest contact loading to increase the control effect will be better. Before 50 time, mainly uses the big capacity of spray every mus of each spraying volume greater than 50 liters, but over the past 10 years spray technology had very great progress, mainly ultra low volume spraying technology in agricultural production to receive promotion application, spray fluid volume to low volume trend, every mus of each spraying physic liquor only 0.1 ~ 2 liters. At present the foreign industry developed country, with small volume spray method, because of its many advantages: 1 drug liquid consumption; the less labor; the mechanical power consumption; the work efficiency is high; the control effect and high economic benefit.
( 3) poison bait method. Bait is mainly used for preventing damage to plants seedlings over the ground and activity of the underground pest. Such as small tiger as well as mice, flies and other pests. It is the use of rodent pests, eating food and pesticide mixture, induced its feeding, in order to achieve the purpose of killing. For example, every mus of available 90% crystal 1 two of dipterex, dissolved in a small amount of water, stir in chopped grass 40 grams dry, in the evening piles scattered in Maize Seedling Roots of cotton seedling or nearby, its control effect is obvious. As bait bait, wheat bran, rice bran, corn chips, bean cake, wood, grass and leaves can be, either as bait, to ground chopped, preferably the bait fry can emit coke incense Mei, then mixing pesticides made baits ( rodent and Musca domestica bait best plus some sesame oil or sugar ), this would be better for killing insect and rodent, Musca domestica.


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