06.04.2013 Views

Rainfed rice - IRRI books - International Rice Research Institute

Rainfed rice - IRRI books - International Rice Research Institute

Rainfed rice - IRRI books - International Rice Research Institute

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Indigenous Rainwater Management<br />

Listing and ridge planting<br />

It is performed in low-rainfall areas where a large percentage of rainfall is<br />

received from short, intense storms. Listing is done using a lister plough. In<br />

some cases, listing is done by making dams at intervals in the furrows called<br />

basin listing. This controls row drainage and increases the water conservation<br />

value of the furrows.<br />

Mechanical measures<br />

Indigenous mechanical measures adopted for harvesting and managing of<br />

rainwater are effective, equitably adoptable and location-specific. However,<br />

mechanical measures have been neglected and need revitalising. Mechanical<br />

measures consist of constructing mechanical barriers across the direction of<br />

water flow to retard or retain the runoff and help to conserve soil and water.<br />

Field bunding<br />

Bunds are constructed along field boundaries. In rainfed farming, bund<br />

construction is needed to conserve moisture, captured through rainwater.<br />

Bunds are made of different cross-sections according to the convenience and<br />

need of farmers. The recommended average bund cross section is 0.438 m 2 .<br />

211

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!