ANSWER THE FOLLOWING QUESTIONS BRIEFLY
1) How are Rabi crops different from Kharif crops ?
) Distinguish between manure and fertilizer.
3) What is ploughing ? List its advantages.
4) List the steps involved in agricultural practises.
5) What are weeds ? How and why should they be removed ?
6) What are the benefits of sowing seeds using a seed drill?
7) What is crop rotation ? Give an example.
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Answers
Answer:
1. Rabi crops are sown at the beginning of the winter season and harvested in spring or at the beginning of summer season and kharif crops are grown during the monsoon season
1. The major difference is that the Rabi crops are grown in the winter season whereas the Kharif crops are grown in the monsoon season.
Kharif crops- Kharif crops are typically sown at the beginning of the first monsoon rains. Harvesting season begins from the 3rd week of September to October.
Rabi crops- They are grown in October or November. The crops are then harvested in spring. These crops require frequent irrigation because these are grown in dry areas.
2. Manure :-
They are natural substance which is obtained by the decomposition of the plant and animal remains by bacteria.
They also provide humus to the soil.
They can be prepared in fields.
Fertilizers:-
They are inorganic substances or compounds.
They do not provide humus to the soil.
They are prepared in factories.
3. The process of loosening and turning of soil is called ploughing. Ploughing of fields is done by using an implement called plough. Plough are made up of wood or iron and they have an iron tip for easy penetration into the soil. The ploughs are pulled by tractor or a pair of bullocks.
Advantages of ploughing the field:
- Ploughing of field make field more cultivable,and fit for crop production.
- Ploughing lets soil absorb sufficient amount of oxygen that inrichs the crops.
- Ploughing is nessasary to break big pieces of soil with a plank.
- The field is levelled for sowing as well as for irrigation.
4. The main steps for agricultural practices include preparation of soil, sowing, adding manure and fertilizers, irrigation, harvesting and storage.
5. A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place".
Examples commonly are plants unwanted in human-controlled settings, such as farm fields, gardens, lawns, and parks.
It's important to rid your garden of weeds because they rob your soil and your plants of important nutrients and water.
Certain weeds such as nut grass actually reduce crop yield on farms because their roots release chemicals that are harmful to surrounding plants.
The two mechanical control techniques most often used are tillage and mowing. Biological weed control refers to any technique that involves the use of natural enemies of weed plants to control the germination of weed seeds or the spread of established plants.
6. The seed drill sows the seeds at the proper seeding rate and depth, ensuring that the seeds are covered by soil. This saves them from being eaten by birds and animals, or being dried up due to exposure to sun. We can save time and less seeds are wasted by this method.
7. Crop rotation is the practice of growing a series of dissimilar or different types of crops in the same area in sequenced seasons. It helps in reducing soil erosion and increases soil fertility and crop yield. With crop rotation, particular nutrients are replenished depending on the crops that are planted.
In simple words, it is the system of growing a sequence of different crops on the same ground so as to maintain or increase its fertility.
For example, a simple rotation between a heavy nitrogen using plant (e.g., corn) and a nitrogen depositing plant (e.g., soybeans) can help maintain a healthy balance of nutrients in the soil.
I hope this will help you!!