(a) A group of students conducted activity where they have taken three glasses A, B and C
with same amount of soil and planted same sized seedlings. They added cow dung manure
in glass A, little urea in glass Band nothing in glass C. After one week they found the
seedlings in glass B has shown more growth than A and C. Give reason for your
observation
(b) Which irrigation method can be used to conserve water and Why?
Beera, wants practice crop rotation in his field. Suggest a Rabi crop and a Kharif crop which
will replenish his field with nitrogen. Which crop replenishes nitrogen and why?
nmonts niven in column A with their use given in column B.
4.
Answers
Answered by
1
Answer:
the question is soo big!!!
Answered by
5
Answer:
for a) comparatively urea has more nitrogen content than cow dung and urea dissolves soon when in contact with soil
b) rizobium plant is a type of a pea plant which increases amount of nitrogen content in the soil through small pores at the top of the root and best irrigation system is to cut the field into rows that is ups and downs where the water stabilizes and stays till dry up. hope u got it
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