Flashcards
Class 8, Chapter 1 - Crop Production and Management | NCERT
Which of those are rabi crops?
wheat
mustard
paddy
gram
pea
maize
soyabean
cotton
Which are winter crops?
Rabi
Kharif
Put in order steps of plant production cycle.
weeding
sowing
storage
preparation of soil
harvesting
threshing
adding manures and fertilizers
irrigation
Put in order steps of plant production cycle.
1. preparation of soil
2. sowing
3. adding manures and fertilizers
4. irrigation
5. weeding
6. harvesting
7. threshing
8. storage
Exposing inner layers of soil to air is called:
ploughing
What is tilling?
adding moisture to the soil
leveling soil surface
removing rodents from the soil
making soil surface compacted
Seed drill and funnel are used for:
weeding
ploughing
fretilization of soil
sowing
True or false?
Manure is natural and organic substance.
True or false?
There are only synthetic fertilizers.
True or false?
Fertilizers are substances providing only praticular nutrients.
Which of those are traditional irigation methods?
Dhekli
Sprinkler system
Chain pump
Moat
Rahat
Drip system
Dhekli
Chain pump
Moat
Rahat
Crop rotation is a method used for:
aerate soil
replenish soil nutrition
manage optimal moisture level of soil
How do we call undesirable plants that grow around crops?
weeds
Which fertilization method is considered better?
Manure
Fertiliser
True or false?
Manure is relatively less rich in plant nutrients.
True or false?
Fertiliser is made in process of decomposition of plants and cattle dung.
True or false?
Most expensive and most efficient irrigation method is a drip system.
What is the best time to remove weeds from field?
right after they germinate
before they produce flowers and seeds
week before crops harvest
before they produce flowers and seeds
How do we call chemicals used to get rid of weeds?
weedicides
True or false?
Chemicals used to get rid of weeds may be harmful for person spraying them over the field.
True or false?
Grains can be stored in granaries or siloses.
True or false?
Kharif Crops in India are grown from June to September.
True or false?
Damaged seeds do not float on the water.
True or false?
Pulses and vegetables are grown during winter season.
Process of separating seeds from the chaff is called:
threshing