Organic Manure

Q. Continuous use of chemical fertilisers can turn the soil ________.

1. fertile
2. rich in organic content
3. rich with microbes
4. infertile

Q. Why earthworms are considered as Farmer’s friend?

Q. Crops which are grown and ploughed back to the soil are called crops.

Q.

Question 33
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.

Q. Which among the following are examples of concentrated organic manure?

1. Deep litter
2. Groundnut
3. Coconut
4. Compost

Q. Manure damages the soil structure.

1. False
2. True

Q. Vermicompost improves the growth of crops.

1. True
2. False

Q. Organic manure is considered better than fertilizers. Which of these is true regarding organic manure?

1. It decreases the water retention
2. It is more expensive
3. It contains harmful chemicals
4. It improves the texture of the soil

Q. is prepared with the help of earthworms.

1. Compost
2. Vermicompost
3. Green manure

Q. ____ is a well-decayed organic matter rich in humus and nurients.

1. Chemical fertiliser
2. Herbicide
3. Biofertiliser
4. Compost

Q. Which of the following highlight the significance of humus in soil?

1. It is used to improve the soil structure.
2. Humus promotes soil erosion.
3. Humus helps to retain water.
4. Humus increases the nutrient level.