Q30 of 49 Page 89

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

The different crops and cultivation practices require different climatic conditions, temperature, photoperiod for their growth and completion of life cycle. There are some crops which are grown in rainy season (Kharif crops) while some others are grown during winter season (Rabi crops).


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28

Define the term hybridization and photoperiod.

 29

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.

 31

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 ____

 32

Differentiate between compost and vermicompost?