Small rivulets or finger like channels formed on the surface of earth by action of water, these channels are of small depth & can be leveled by tillage operations is:

A. Gully erosion
B. Sheet erosio.
C. Stream bank erosion
D. None of these

Following are types if erosion:

A. Rain splash & sheet erosion
B. Rill & gully erosion
C. Normal (geological) erosion & accelerated erosion
D. All of these

Principles of soil conservation does not include:

A. Minimize run-off  & store surplus water
B. Use non-arable lands effectively
C. Leave barren lands uncultivable to support desrtification degradation
D. Construction of mini dams & ponds to store water for live stock & other porposes

Causes of Soil are:__________?

A. Indiscriminate felling of trees
B. Over grazing
C. Mismanagement of irrigation syste
D. All of these

The evolution of new species is known as_____________?

A. Specialization
B. Speciation
C. Smog
D. None of these

_________refers to the increase in density of a soil as a result of applied load or pressure?

A. Traffic soles
B. Plough soles
C. Compaction
D. Pudding

Which of the following techniques is/are used for the soil fertility evaluation?

A. Soil testing
B. Plant tissue testing
C. Aspergillus niger test
D. All of these

What percentage of Agriculture in GDP?

A. 20.9
B. 21.5
C. 19.8
D. 18.5

Most salt tolerant grass is___________?

A. Para grass
B. Giant star grass
C. Kallar grass
D. All of the above

International Union of Forest Research Organization (IUFRO) is located:

A. Pakistan
B. Germany
C. Austria
D. Both a & b