Three Row Weeder Development

Sri Lankan experience

Collaborative research by Oxfam and Rajarata University of Sri Lanka

Learning / experience on Weed management

• Changing the soil structure during land preparation through different soil fertility enhancement practices

• Managing the weeds around the field/ bunds and controlling weeds types and weeds propagation

• Controling weeds through a weeder

-Weed controlling

-Aeration

-Soil structure improvement

The purpose of the weeder

6 types of modified weeders

Japan Rotary weederDrum width ; 14 cm Required Spacing between the rows; 13.5cmBoat length; 17 cmWeight; 5.500 kg

Single row Cono weeder

-Drum width ; 11 cm -Required Spacing between the rows; 14.5 cm-Boat length; 28 cm-Weight; 4.100 kg

Single row cono weederDrum width ; 19 cm Required Spacing between the rows; 22 cmBoat length; 26 cmWeight; 5.300 kg

-Drum width ; 13 cm -Required Spacing between the rows; 18 cm-Boat length; 17 cm-Weight; 6.300 kg

Two Row Conoweeder

Three row four drums cono weeder

Drum width ; 14 cm Required Spacing between the rows; 13 cmBoat length; 28 cmWeight; 7.700 kg

Three rows three drums cono weeder

Drum width ; 14 cm Required Spacing between the rows; 21 cmBoat length; 13 cmWeight; 10.100 kg

Practical field comparison of different weeders at an average paddy field in

Sri Lanka• Video

Thank you very much