Question

Comparison between manual and mechanical excavation

Answer 1

Answer:

Manual method includes handweeding and use of hand tools. Mechanical method, on the other hand,includes the application of mechanized interrow cultivation and other mechanical method.

Manual method

Handweeding and the use of hand tools

- Examples of hand tools are hoes and sickles

Advantages:

Effective method of removing weeds

Practical and efficient method of removing weeds within rows or hills of rice where weeds cannot be controlled by other means

Disadvantages:

Extremely tedious and time consuming

It is not practical to use on large scale area of rice

It is difficult to distinguish weed seedlings from rice seedlings at early stage of growth and uprooting or damaging rice cannot be avoided. This occurs particularly in direct-seeded rice