duster


Also found in: Dictionary, Thesaurus, Medical, Idioms, Wikipedia.

duster

a cloth used for dusting furniture, etc.

Duster

 

a machine or device for applying powdered dry pesticides to crops to protect them against pests and disease. Tractor-mounted or knapsack manual dusters are used, depending on conditions.

Tractor-mounted dusters are used to dust field crops, orchards, vineyards, and forest tracts. The working members are driven by a power takeoff shaft from the tractor engine. The operating width depends on the design of the duster; for vineyards it covers two to four rows, and for field crops, 10–100 m. Rated performance is from 3.5–5.0 to 30–64 hectares per hour.

Table 1. Main drying oils and their uses
1 mixture of polymerized and dehydrated oils is used *White spirit is the solvent ‘Content of alkyd resin, which has a fat content of 59–65%
NameType of oilProcessing methodOil content (percent)Uses
Natural.............DryingPartial polymerization100Preparation of primers, putty, oil paints (concentrated and thinned to working consistency); treatment of wood surfaces and other porous materials
Compound...........Drying or semidryingPolymerization and dehydration170–732Preparation of concentrated oil paints
Seminatural (for example, oxole) ............Drying orsemidryingPolymerization50–552Dilution of concentrated oil paints to working consistency
Alkyd (glyptal, pentaglyptal).Drying502,3Preparation of oil paints (concentrated and thinned to working consistency)

Knapsack dusters are used to treat vineyards, young fruit plantings, berry patches, vegetable fields, and other crops on small and inaccessible plots. The main units of such a duster are a tank with a feed device, a fan with a drive handle, and a tube with a spray nozzle. It has shoulder straps for carrying. Some knapsack dusters have a bellows instead of a fan for spraying the pesticide.

All dusters have the same principle of operation. The powder is fed from the bin or tank into a mixing chamber, and then it is forced by a stream of air created by the fan or bellows through the spray nozzle and out onto the plants.

G. P. SHAMAEV

References in periodicals archive ?
The new motor is a three-cylinder turbo that produces 100bhp - but the not so good news is that it lifts the price of the entry-level Duster to PS10,995 - PS1,000 more than the model with the old engine.
From a design viewpoint, the Duster is very easy to spot, with its traditional grille, sweeping light clusters, athletic stance with raised waistline, rippled bonnet, front and rear skid plates, satin chrome roof bars with "DUSTER" inscription and 16in alloys.
The current iteration is the second generation Duster and, although upgrades in many areas make it a much more user-friendly car than its predecessor - which helps to explain the huge surge in popularity - it still sticks to Dacia's tried and trusted no-frills approach to motoring.
My week with a Duster came immediately after driving a PS318,000 Bentley Mulsanne Speed for four days yet it still managed to impress.
Release date- 30072019 - Dacia is modernizing its engine range with the latest TCe 100 petrol engine on Duster, the top-selling C-segment SUV in France in 2019 in consumer sales.
The all-new Renault Duster boasts brand-new exterior styling, delivering a distinctly assertive and robust look, as well as an upgrade in perceived quality with a totally redesigned interior for a comfortable and user-friendly driving experience.
Zigwheels.com, an automotive news magazine, has revealed details of the Renault Duster facelift from spy shots.
Priced from PS15,695 the new Blue dCi 115 variant sits close to the top of the Duster line up which, costing from PS9,995 is the cheapest SUV of its kind.
The crop duster, being used to spray pesticides on the plantation, was a total wreck.
The new Duster comes with advanced equipment and high-quality systems to provide a comfortable driving experience.
TOOTLING around France on a lazy holiday break five years ago the roads were full of a rather smartly styled SUV with a name on the back few Brits had ever heard of - it read Dacia Duster.