Knapsack sprayer consists of a pump and an air chamber permanently installed in a 9 to 22.5 liters tank. The handle of the pump extending over the shoulder or under the arm of operator makes it possible to pump with one hand and spray with the other.  Uniform pressure can be maintained by keeping the pump in continuous operation.



Tank capacity (I)                                     

Pump cylinder inner dia (mm)                 

Number of piston in pump cylinder      

Pressure chamber capacity (ml)            

Displacement volume (ml)                     

Number of delivery spout                       

Type of delivery spout                            

Cut off valve passage diameter (mm)

Lance length (mm)                                 

Nozzle type                                            

Spray angle                                            

Size of filling hole (mm)                       

Pump discharge (ml/min)                      


: 9-22.5

: 39-42

: One

: 572-660

: 87.24

: one

: Threaded

: 5

: 725

: Hollow cone

: 78 degree

: 94.9

: 610-896




Knapsack sprayers are used for spraying insecticides and pesticides on small tressí shrubs and row crops.


Cost of Machine : Rs.2,500/-







It consists of two plastic tanks (fuel and water/dust), engine, pump, spray hose, rope starter, delivery pipe, cut-off-cock, shoulder straps and a frame. It has a small 2-stroke petrol/kerosene engine of 35 cc to which a centrifugal fan is connected. The fan produces a high velocity air stream, which is diverted through a 90-degree elbow to a flexible (plastic) discharge hose, which has a divergent outlet. Upon rotation of the engine the fan produces a high velocity air stream. The control valve for the spray is opened gradually and adjusted for the desired flow rate. The operator directs the discharge hose to the target. It can be converted for dusting and ULV application.




Length (mm)

Width (mm)

Height (mm)

Weight (kg)

Number of tanks

Air velocity at outlet(m/s)

Field capacity(ha/h)

Power requirement (hp/kW)



:      460

:      210

:      540

:      9-11

:      2

:      65-75

:      2-3

:      1.2/0.9, petrol or petrol/kerosene engine




It is suitable for spraying pesticides and fungicides. It is used for spraying in rice, fruits and vegetable crops. It can be used for applying pesticides in liquid and powder form.


Cost of Machine : Rs.7000/-















These are hydraulic energy sprayers. They utilize PTO power of the tractor to operate the pump of the sprayer. Basically the spray boom can be arranged in two ways; ground spray boom and Overhead spray boom. The overhead spray boom is designed for tall field crops and the 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 after every planted strip a fallow strip has to be left for tractor operation. For ground spray boom the planting has to be done in rows keeping in view track width of the tractor. It is suitable for use when the crop is small. The sprayer essentially consists of a tank which is made of fiber glass or plastic, pump assemblyís suction pipe with strainer, pressure gauges pressure regulators, air chamber, delivery pipe, spray boom fitted with nozzles. The complete sprayer is mounted on 3-point linkages of the tractor. 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.




Overall length(mm)

Overall width (mm)

Overall height (mm)

Tank capacity (I)

Weight (kg)

Field capacity (ha/day)





:      6340

:      1290

:      1570

:      400

:      150

:      8 (with 14 nozzles)




It is used for spraying in vegetable gardens, flower crops, vineyards and for tall field crops like sugarcane, maize, cotton, sorghum, millets etc.


Cost of Machine : Rs.40,000/-







The machine has a chassis with 1200-mnl ground clearance, four wheels, and 20 hp diesel engine, 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 form 31.5 cm to 168.5 cm to suit different crops and can be folded during transport. The front two wheels are narrow in width (20 cm) 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 wheel track is 135 cm and during operation2 rows of cotton crop come under the machine chassisís machine has four forward speeds and one reverse speed. The 1 st and 2nd gears are for field operation while 3rd and 4th gears are for road transport. The field speed is up to 5 km/h and the road speed is up to 25 km/h.




Number of gears                                        

Ground clearance of machine( mm)       

Length of boom (m)                                   

Number of nozzles                                     

Nozzles spacing (cm)                                 

Width of coverage (m)                               

Tank capacity (litres)                                 

Maximum field/road speed (km/h)         

Weight (kg)                                                

Power required (hp)                                   




: Four forward and one reverse

: 1200

: 10.80

: 18

: 67.5 (fixed)

: 13.50

: 1000

: 5/25

: 1900

: 20, diesel engine



Self-propelled high clearance sprayer is most suitable for spraying on tall crop like cotton. The machine can also be used for spraying on sunflower, wheat and other crops.


Cost of Machine : Rs.80,000/-