Applying Manures and Fertilisers

Q. NPK fertiliser supplies nitrogen, phosphorus and _____ to the crops.

1. potassium
2. calcium
3. sodium
4. magnesium

Q. Manures are inorganic substances.

1. False
2. True

Q. Manure is an substance obtained from decaying plants and animals.

1. inorganic
2. artificial
3. organic

Q. Excessive use of fertilisers causes air pollution.

1. True
2. False

Q. Ram wants to enrich soil with nutrients for his plants. Suggest the correct plant nutrient source(s) he should add that does/do not cause water pollution.

1. Poultry wastes
2. Goat droppings
3. Fertilisers
4. Cow dung

Q. Organic wastes can be decomposed to form ________.

1. pesticide
2. manure
3. urea
4. fertilisers

Q. is prepared with the help of earthworms.

1. Compost
2. Vermicompost
3. Green manure

Q. Yield from Raghu's farm land was reducing year by year. He consulted an agriculture officer who had suggested him to use an organic substance X to increase yield and also retain the fertility of soil. Identify X.

1. Manure
2. Ammonia
3. Superphosphate
4. Ammonium sulphate

Q. Identify the plant disease and it's type based on the given symptoms.

1. Leaves of the affected plant have powdery spots.
2. Rotting of the root.
3. Wilting of plants.
4. Emission of foul smell.

1. Root infection, Viral
2. Tikka disease, Fungal
3. Leaf rot, Bacterial
4. Zika, Protozoan

Q. Manure damages the soil structure.

1. False
2. True