2. Complete Activity 1.2 (Page 6). Take moong or gram seeds and germinate them. Select three equal sized seedlings. Take three empty glasses or similar vessels. Mark them A, B and C. To glass A add little amount of soil mixed with a little cow dung manure. In glass B put the same amount of soil mixed with a little urea. Take the same amount of soil in glass C without adding anything [Fig. 1.3(a)]. Now pour the same amount of water in each glass and plant the seedlings in them. Keep them in a safe place and water them daily. After 7 to 10 days observe their growth.
Answer:
The above activity can be carried out as follows:
Aim: To observe which of the plants grows the most and conclude based on the observations.
Materials Required: Three equal sized moong seeds, three empty glasses, soil, cow dung manure, urea.
Procedure:
(i) Germinate the three moong seeds by keeping them in a moist and humid place.
(ii) Take the three empty glasses and mark them A, B and C.
(iii) To glass A, add little amount of soil mixed with a little cow dung manure.
(iv)In glass B put the same amount of soil mixed with a little urea.
(v) Add the same amount of soil to glass C without adding anything.
(vi) Now pour the same amount of water in each glass and plant one seedling in each. Keep them in a safe place and water them daily. After 7-10 days observe which plant grows the fastest.
Observations: You will observe that the plant in glass B grows the fastest, followed by the plant in glass B and then the plant in glass C.
Conclusions:
We conclude that:
- Fertilisers like urea are richer in nutrients than cow dung manure, so the plant in glass B grows the fastest.
- Cow dung manure also contains nutrients, so the plant in glass A grows faster than the plant in glass C.
“Take moong or gram seeds and germinate them. Select three equal sized seedlings. Take three empty glasses or similar vessels. Mark them A, B and C. To glass A add little amount of soil mixed with a little cow dung manure. In glass B put the same amount of soil mixed with a little urea. Take the same amount of soil in glass C without adding anything [Fig. 1.3(a)]. Now pour the same amount of water in each glass and plant the seedlings in them. Keep them in a safe place and water them daily. After 7 to 10 days observe their growth.” – Solved.
Related Links:
Solution to Extended Learning Problem 1
Solution to Extended Learning Problem 2
Solution to Extended Learning Problem 3
Solution to Extended Learning Problem 4
Solution to Activity 1.1
Solution to Activity 1.3
Solution to Chapter 1 Crop Production and Management
