Forum

Improvement In Food Resources

Arrange these statements in correct sequence of preparation of green
manure.
(a) Green plants are decomposed in soil.
(b) Green plants are cultivated for preparing manure or crop plant parts
are used.
(c) Plants are ploughed and mixed into the soil.
(d) After decomposition it becomes green manure

05/11/2024

Science

9th

Improvement In Food Resources

Differentiate between compost and vermicompost?

05/11/2024

Science

9th

Improvement In Food Resources

Fill in the blanks
(a) A total of———nutrients are essential to plants.
(b) ———and———are supplied by air to plants.
(c) ———is supplied by water to plants.
(d) Soil supply———nutrients to plants.
(e) ———nutrients are required in large quantity and called as———.
(f) ——— nutrients are needed in small quantity for plants and are
called ———.

05/11/2024

Science

9th

Improvement In Food Resources

Cultivation practices and crop yield are related to environmental condition. Explain.

05/11/2024

Science

9th

Improvement In Food Resources

Fill in the blanks
(a) Photoperiod affect the————.
(b) Kharif crops are cultivated from————to————.
(c) Rabi crops are cultivated from————to————.
(d) Paddy, maize, green gram and black gram are————crops.
(e) Wheat, gram, pea, mustard are————crops.

05/11/2024

Science

9th

Improvement In Food Resources

Define the term hybridization and photoperiod

05/11/2024

Science

9th

Improvement In Food Resources

Group the following and tabulate them as energy yielding, protein yielding,
oil yielding and fodder crop.
Wheat, rice, berseem, maize, gram, oat, pigeon gram, sudan grass, lentil,
soyabean, groundnut, castor and mustard.

05/11/2024

Science

9th

Improvement In Food Resources

If there is low rainfall in a village throughout the year, what measures will
you suggest to the farmers for better cropping?

05/11/2024

Science

9th

Improvement In Food Resources

Give one word for the following
(a) Farming without the use of chemicals as fertilizers, herbicides and
pesticides is known as ———.
(b) Growing of wheat and groundnut on the same field is called as ———.
(c) Planting soyabean and maize in alternate rows in the same field is called
as ———.
(d) Growing different crops on a piece of land in pre-planned succession
is known as———.
(e) Xanthium and Parthenium are commonly known as———.
(f) Causal organism of any disease is called as ———.

05/11/2024

Science

9th

Improvement In Food Resources

Why is excess use of fertilizers detrimental for environment?

05/11/2024

Science

9th