Explain different factors affecting erosion by water.

If the degree of slope of a plot is increased from to what will be the increase in soil loss caused by water keeping other factors at the same level

Explain erodibility index. and roughness factor as used in soil loss due to wind erosion.

Explain tillage management practices which are helpful in controlling wind erosion.

How will you decode terrace length and terrace grade What are design precautions in case of a terrace?

Design a 140 m long bench terrace. for an area with average slope 20%. The channel may have uniform slope of 0·5%. The peak runoff from area is 25 litres per second. The soil is clay loam.

How will you ensure safe conveyance of runoff through gullies Explain all the three steps.

Explain the steps involved in design of a check dam.

Derive Hooghoudt's equation for spacing between a tile drain. Draw a neat sketch of the physical situation.

How will you determine the capacity of tile drains?

What are the different sources of salts in irrigation water? Explain two important drainage methods to reclaim alkali soil.

Explain leaching requirement for reclamation of saline soil.

Explain nutrient management in irrigated transplanted rice or sugarcane crop.

Explain the pest management in cotton or mustard.

Write a note on pesticide production in India.

What is integrated pest management Explain with example.

How will you characterize a watershed? What are mini-watershed, micro-watershed and sub-watershed?

How do improved crop management practices help rainfed farming?

10. Write short notes on any four of the following:

In-situ Rainwater Conservation

Multiple Cropping

Gypsum Requirement

Ratoon Crop Management

Classification of Sprayers

Biodrainage