Applying Manures and Fertilisers

Q.

What are the functions of detritivores in the ecosystem?

Q.

How is manure different from humus

Q.

Fertilisers increase fertility of the soil.

True or False?

Q. Organic substances which increase the fertility of the soil are called ___.

1. weeds
2. fertilisers
3. manures
4. pests

Q. The first step in agriculture before sowing seeds is of soil.

1. harvesting
2. preparation
3. irrigation

Q.

The plants grow fastest if we add fertilizers in the soil but if we add money or plants grow but at slower rate give reason

Q. Organic wastes can be decomposed to form ________.

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

Q.

How do fertilizers help the soil?please give short answer

Q. What is precision farming?

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

1. fertile
2. nutrient rich
3. infertile
4. porous

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. 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.

Ram and Krishna both decided to grow wheat in their farms and bought seeds of the same quality. Ram cultivated chickpeas before wheat, whereas Krishna planted wheat directly with the required phosphate fertilizers. Ram's yield of wheat was 100 kg and Krishna's was 25 kg. How did Ram get a better yield than Krishna?

1. Growing chickpea increased yield in Ram's field.

2. Fertilizers were not sufficiently added.

3. Ram did not use fertilizers.

4. Krishna used the wrong fertilizer.

Q.

What are the advantages of using manures?

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. Fertilisers are organic substances that helps in increasing soil fertility.

1. True
2. False

Q. Manures help in

1. growth of helpful soil organisms.
2. decreasing water holding capacity.
3. increasing water holding capacity.
4. enriching soil with nutrients.

Q. Choose a pulse crop from the options given below.

1. Rice
2. Maize
3. Gram
4. Wheat

Q.

The crops which are grown in rainy seasons are called

Q.

Litterfall of vegetation, animal remains, and fecal matter from below-ground detritus.

1. True
2. False

Q. Fertilisers are organic substances that helps in increasing soil fertility.

1. True
2. False

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

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

Q.

who does manure improve soils water holding capacity and its soil texture?

Q. Which of the following is an organic nutrient for plants?

1. Potash
2. Cow dung
3. Urea
4. NPK

Q. Compost lacks which of the following nutrients?
(a) nitrogen
(b) phosphorous
(c) potassium
(d) all of these

Q. Eating over ripened fruits doesn't affect the health of an individual.

1. False
2. True

Q. Manures are not made of
(a) cow dung.
(b) farmyard waste.
(c) urea.
(d) leaves.

Q. _____________ is mainly used to ensure good vegetative growth (leaves, branches, and flowers), giving rise to healthy plants.

1. Manure
2. Insecticide
3. Pesticide
4. None of the above

Q.

Q. Give two differences between manure and fertilizer.