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.

(a)  

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