What is a crop?

Complete the following world puzzle with the help of the clues given below.
Down
1. Providing water to the crops.
2. Keeping crop grains for a long time under proper conditions.
5. Certain plants of the same kind are grown on a large scale.
Across
3. A machine used for cutting the matured crop.
4. A rabi crop is also one of the pulses.
6. A process of separating the grain from the chaff.

Observe the image carefully and answer the question:

Write the names of things that we obtain from plants.