Measures to Maintain Soil Nutrients

Q.

Explain how soil gets affected by the continuous plantation of crops?

Q.

What is crop rotation?

Q.

What is crop rotation and how it is useful

Q.

Define crop rotation.

Q. Differentiate between mixed cultivation and crop rotation [2MARKS]

Q.

What steps are taken to protect crops from pests?

Q.

why does farmer grow cotton plants with groundnut crops?

Q. Match the preferred cropping patterns used to grow the following crops.

1. Wheat + Gram
2. Soybean + Maize
3. Cabbage + Peas

Q.

Name any two micro nutrients.

Q. Which of the following helps in maintaining soil fertility?
A. Crop rotation
B. Herbicides
C. Pesticides

1. Only A
2. A, B and C
3. Only B
4. A and C

Q. and water are provided by the soil to plants through the roots.

1. Nutrients
2. Sunlight
3. Carbon dioxide

Q.

What is the need for crop rotation in a field?

Q.

Is magnesium a micronutrient for plant growth?

Q.

Identify the statement as true/false:

Crop rotation results in reduced yield.

1. True
2. False

Q. Which of the following methods are used for crop improvement?

1. Intercropping
2. Genetic engineering
3. Hybridisation
4. Crop rotation

Q. Phosphorus is a while manganese is a for plants.

1. macronutrient
2. micronutrient
3. growth nutrient
4. healing nutrient

Q.

In intercropping two or more crops are sown simultaneously in______________.

Q. Explain rotation of crops.

Name the crops which help in enriching the soil with Nitrogen. [2MARKS]

Q. Match the preferred cropping patterns used to grow the following crops.

1. Wheat + Gram
2. Soybean + Maize
3. Cabbage + Peas

Q. Sort the steps in crop production in the correct sequence.

1. Soil preparation
2. Sowing
3. Irrigation
4. Harvesting

Q. Bharath is a young farmer and decides to take crops differently. He plants a row of wheat and row of soybean alternately. What kind of cropping pattern is he adopting?

1. Crop rotation
2. Mixed cropping
3. Innovative cropping
4. Row intercropping

Q. Ramappa wants to grow a monocot and dicot one after another at regular sequence on a same piece of land. Which type of cropping should he adopt?

1. Rotational cropping
2. Random cropping
3. Multiple cropping
4. Single cropping

Q.

Match the following:

$\begin{array}{cc}\text{Column 1}& \text{Column 2}\\ \text{A. Earthworm}& \text{i. Fertiliser}\\ \text{B. Cow dung}& \text{ii. Vermicompost}\\ \text{C. NPK}& \text{iii. Crop rotation}\\ \text{D. Replenishment method}& \text{iv. Manure}\end{array}$

1. A-iv, B-iii, C-ii, D-i

2. A-i, B-iv, C-ii, D-iii

3. A-ii, B-iv, C-i, D-iii

4. A-iii, B-ii, C-iv, D-i

Q.

Cultivation of two or more crops together in the same field is called:

1. Mixed cropping

2. Intercropping

3. Crop rotation

4. All of these

Q. Identify the important nutrients required by crops.

1. Calcium
2. Magnesium
3. Nitrogen
4. Water
5. Phosphorus
6. Potassium
7. Iron
8. Sodium
9. Gold
10. Chlorine