Question

Answer the following question in short (20-30 words):

a. Write the three disadvantages of excessive irrigation.

b. What is fertiliser? Name any two .

c. What is threshing?

d. Define crop transplantation.

e. What are the disadvantages of traditional methods of irrigation?

f. Describe three methods of weeding.

g. Define the term “Rabi crop”.

h. What is livestock? Explain with examples.

i. Why should weeds be removed from a field?

j. What is harvesting?​

Answer 1

Answer:

1. Harmful effects of excessive irrigation:

Excess of water in soil leads to water logging.

Sometimes, it inhibits the process of germination.

Roots do not grow properly in a standing water field.

Excess irrigation destroys standing crops.

Increases the amount of salt on the surface soil as water evaporates.

2. This goal is met in two ways, the traditional one being additives that provide nutrients.

3. Threshing is the process of loosening the edible part of grain from the chaff to which it is attached. It is the step in grain preparation after reaping. Threshing does not remove the bran from the grain. Threshing may be done by beating the grain using a flail on a threshing floor.

4. In agriculture and gardening transplanting or replanting is the technique of moving a plant from one location to another. ... In the horticulture of some ornamental plants, transplants are used infrequently and carefully because they carry with them a significant risk of killing the plant.

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Answer 2

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1. Write the three disadvantages of excessive irrigation.

• ☞ Excess of water in soil leads to water logging.
• Sometimes, it inhibits the process of germination.
• Roots do not grow properly in a standing water field.

2. What is fertiliser? Name any two .

☞ Fertilisers are chemicals which contain a particular plant nutrient. Fertilizers are made in factories. Urea, ammonium sulphate, super phosphate, potash and NPK (Nitrogen, Phosphorus and Potassium) are examples of fertilizers.

• Sodium Nitrate 16.0
• Calcium Nitrate

3. What is threshing?

☞ Threshing is the process of loosening the edible part of grain (or other crop) from the husks and straw to which it is attached. ... Threshing does not remove the bran from the grain. Threshing may be done by beating the grain using a flail on a threshing floor.

4. What is Crop Transplantation ?

☞ Transplanting is the process of moving a fully germinated seedling (or mature plant) and replanting it in a permanent location for the growing season. ... A plant that has been recently transplanted is sometimes referred to as a transplant.

5. What are the disadvantages of traditional methods of irrigation?

• ☞ In our Agriculture sector, the availability of water is decreasing day by day due to the increase in population, industrialization and short rainfall.
• Help to promote weed growth.
• Wastage of water is caused due to seepage in the drain.
• Increase labour and electricity cost.
• Promote soil erosion.

6. Describe three methods of weeding.

• ☞ Tilling before sowing of crops helps in uprooting and killing of weeds, which may then dry up and get mixed with soil.
• Best time for the removal of weeds Is before they produce flowers and seeds.
• The manual removal includes physical removal of weeds by uprooting or cutting them close to the ground time to time. This is done with the help of a khurpi.

7. Define the term “Rabi crop”.

☞ Rabi crops are agricultural crops that are sown in winter and harvested in the spring in India and Pakistan. The term is derived from the Arabic word for "spring", which is used in the Indian subcontinent, where it is the spring harvest.

8. What is livestock? Explain with examples.

☞ Livestock is commonly defined as domesticated animals raised in an agricultural setting to produce labor and commodities such as meat, eggs, milk, fur, leather, and wool.

9. Why should weeds be removed from a field?

☞ Wedding is necessary since weeds also use nutrients from the soil. They compete with water and light, thus, Weeds are removed from fields because they compete aggressively.

10. What is harvesting?

☞ Harvesting is the process of gathering a ripe crop from the fields. Riping is the cutting of grain or pulse for harvest, typically using a scythe, sickle, or reaper. Harvesting is the process of collecting a ripe crop from the fields.