In agricultural practices, higher input gives higher yield. Discuss how?
An Italian bee variety A. mellifera has been introduced in India for honey
production. Write about its merits over other varieties.
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
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 ———.
Cultivation practices and crop yield are related to environmental condition. Explain.
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.
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