Q. When a canal is taken as an example what factor about it causes waterlogging?

View solution

Q. Which factor causing waterlogging suggests extensive irrigation?

View solution

Q. Seepage of water from the adjoining highlands causes waterlogging.

View solution

Q. Waterlogging is the rise of water table.

View solution

Q. The land is made to be sloped towards the ditches.

View solution

Q. How many types of structures can be constructed in the fields to remove excess waters?

View solution

Q. What is the name given to the drains used in depressions?

View solution

Q. Shallow surface drains are connected to outlet drains.

View solution

Q. What is the cross sectional shape of shallow surface drains?

View solution

Q. Which type of open drains would be fully operative only in rainy season?

View solution

Q. What structure is constructed to carry back into the underground?

View solution

Q. In surface inlet what is provided to deal with trash?

View solution

Q. Which type of drains is used for small quantity of waters removal?

View solution

Q. For maximum productivity of crops both surface and sub-surface drains are sometimes needed.

View solution

Q. How can tile drainage help to increase crop yields?

View solution

Q. Tile drainage helps to reduce soil erosion.

View solution

Q. Which type of soils is benefited by using tile drainage?

View solution

Q. In what chemical ways does tile drainage help in plant growth?

View solution

Q. Under what strata the tile drainage should not be placed?

View solution

Q. What structure is surrounded around the tile drains when used in less pervious strata?

View solution