Crop production

Which of the following should be used by a farmer with a large farm to harvest his crops quickly and efficiently?

• Winnowing machine

• Combine

• Sickle

• Seed drill

Compost is a

• manure

• pesticide

• weedicide

• Fertilizer

Seed drill is used for

• sowing

• weeding

• harvesting

• cleaning the seed

The chemical substances rich in nutrients are called

• weedicide

• pesticides

• fertiliser

• herbicides

Supply of water to crops at appropriate intervals is called

• harvesting

• irrigation

• sowing

• cultivation

…………. …………. are chemicals to control growth of weeds.

Arrange the following agricultural practices in the order in which they are followed.

Harvesting

Sowing

Storage

Irrigation

Preparation of soil

• 5→2→4→1→3

• 2→1→3→5→4

• 1→2→3→4→5

• 5→3→4→1→2

The process of loosening and turning the soil is known as:

• Ploughing

• Winnowing

• Threshing

• Harvesting

Rhizobium bacteria in the root nodules of leguminous plants help in fixing:

• Oxygen

• Hydrogen

• Nitrogen

• Sulphur

Kharif crops need more water than rabi crops

• False

• True