Plant Protection Equipment - AICRP on Farm Implements and Machinery

Multi Orchard Sprayer

It is suitable for spraying chemicals in orchards like grapes, citrus, pomegranate etc. It consists of an HTP (horizontal triplex piston) pump, trailed type main chassis with transport wheels, chemical tank with hydraulic agitation system, cut-off device and boom equipped with turbo nozzles. It is fitted with turbo nozzles operating at a pressure of 883-1766 kPa and generates droplets of 100-150 micron in size. The orientation of booms can be adjusted depending upon the plant size and their row spacing. The spray booms are mounted behind the operator. The boom covers half of the tree canopy on either side of the sprayer. It costs Rs. 60,000/- and can cover 0.40-0.70 ha/h at forward speed of 1.20-1.50 km/h.

Self-propelled High Clearance Sprayer

Self-propelled high clearance sprayer is most suitable for spraying on tall crop like cotton. It can also be used for spraying on sunflower, wheat and other crops. The machine has a chassis with 1200 mm ground clearance, four wheels, diesel engine (15 kW), gearbox, water tank, seat for the operator, spray pump and boom with 18 nozzles. The nozzles are spaced at 675 mm and total boom width is 10.80 m. The boom height can be adjusted from 315 to 1685 mm to suit different crops and can be folded during transport. The front two wheels are narrow in width (200 mm) and are given drive, while the rear wheels are steering wheels. Fenders have been provided in front of the drive wheels to deflect the crop branches away from the wheels for reducing mechanical damage. The track wheel is 1.35 m and two rows of cotton crop come under the machine during operation. The machine can be operated at a forward speed up to 5 km/h in field and up to 25 km/h on road. The effective field capacity varies from 1.6 to 2.0 ha/h and approximate cost is Rs. 2 lakh. The cost of operation is Rs. 485/h.

Tractor Mounted Boom Sprayer

The sprayer essentially consists of a tank made of fibre glass or plastic, pump assembly, suction pipe with strainer, pressure gauges, pressure regulators, air chamber, delivery pipe and spray boom fitted with nozzles. The sprayer is mounted on 3-point linkages of the tractor and utilizes PTO power of the tractor to operate the pump of the sprayer. It uses high pressure and high discharge pump as the number of nozzles may be up to 20 depending upon the crop and make of the sprayer. Basically the spray boom can be arranged in two ways viz ground spray boom and overhead spray boom. For ground spray boom, the planting has to be done in rows keeping in view of track width of the tractor. The overhead spray boom is designed for tall field crops and planting is done in such a way that it leaves an unplanted strip of about 2.5 m width for operation of the tractor. Therefore, a planted strip may be 18-20 m wide and a fallow strip has to be left for tractor operation after every planted strip. There is a provision of raising the height of boom with increase in crop height.

Tractor Operated Aero Blast Sprayer

The machine consists of a tank of 400 litres capacity, pump, fan, control valve, filling unit, spout adjustable handle and spraying nozzles. The nozzles release the pesticide solution into stream of air blast produced by the centrifugal blower. The air blast distributes chemical in the form of very fine particles throughout its swath on one side of tractor. The major portion of swath is covered by the main blast through the main spout and auxiliary nozzles cover the swath area near the tractor. The sprayer is mounted on the tractor 3-point linkage and operated by tractor PTO. The orientation of air outlet can be adjusted for its direction and width of coverage. The machine can cover about 1.7 ha/h at a speed of 1.5 km/h. Application rate of sprayer can be varied from 100 to 400 l/ha depending upon different valve settings. Effective width of sprayer is about 13.0 m. The unit price of aeroblast sprayer is Rs 1.00 lakh. The cost of operation of this machine is Rs. 500/ha as against Rs. 700/ha by conventional method.