1.Why is ploughing necessary before
sowing the seeds? Give three
reasons.
2.Why crop rotation is useful for
farmers?
3.What are weeds? Why is it necessary
to remove weeds from our fields?
4.What is irrigation? Describe two
methods or irrigation
which
conserves water.
5.Name three natural methods of
replenishing the nutrients of the soil.
Are these natural methods sufficient
to maintain the fertility of the soil?
6.Name the three types of crops in our
country and give two examples of
each.
tup
7.Give three reasons why soil should
be turned and loosened?
8.What are the three steps involved in
the preparation of soil?प्लीज गिव मी आंसर
Answers
Answer:
1. The ploughing is necessary before sowing to loosen the soil so that air could enter in the soil and the plants Could get proper nutrients.it also help the soil to retain moisture and easy to manure the the soil on loose soil.
2. Crop rotation helps return nutrients to the soil without synthetic inputs. The practice also works to interrupt pest and disease cycles, improve soil health by increasing biomass from different crops' root structures, and increase biodiversity on the farm.
3. They rob soil moisture and nutrients from the competing crop and decrease harvest efficiencies. Weeds also compete with the crop for sunlight. Because they are plants competing to survive in a limited space, weeds are actively removing nutrients from the soil to grow taller, stronger and healthier each day.
4. The process of watering the crops is called irrigation. Two methods of irrigation are: (i) Sprinkler system : This system is used on the uneven land where less water is available. ... (ii) Drip irrigation: This system is used to save water as it allows the water to flow drop by drop at the roots of the plants.
5. Field fallow, crop rotation and mixed cropping are three natural methods of replenishing the nutrients of the soil. These natural methods are not enough and farmers have to resort to manures and fertilisers.
6. Types of Crops
The crops are of the following types depending upon the season in which they are grown:
Kharif Crops
The crops which are grown in the monsoon season are known as Kharif crops. For eg., maize, millet, and cotton.
The seeds are sown at the beginning of monsoon season and harvested at the end of the monsoon season.
Such crops require a lot of water and hot weather for proper growth.
Rabi Crops
The name “Rabi” means “spring” – a word derived from Arabic.
The crops that are grown in the winter season and harvested in the spring are called Rabi crops.
Wheat, gram, and mustard are some of the Rabi crops.
Various agricultural practices are carried out to produce new crop varieties.
Such crops require a warm climate for the germination and maturation of seeds. They, however, require a cold climate for their growth.
Zaid Crops
Such crops are grown between the Kharif and Rabi seasons, i.e., between March and June.
These crops mature early.
Cucumber, pumpkin, bitter gourd, and watermelon are zaid crops.
7. It is necessary to turn and loosen the soil because only loose soil allows the roots to penetrate freely deeper into soil. The roots can breathe easily in loose soil. The deep roots hold the plants more firmly. The water also can reach easily up to more depth in loose soils.
8. In agriculture, ploughing, levelling, and manuring are the three steps of soil preparation. Ploughing includes loosening and digging of soil. During ploughing, the soil becomes loose and the nutrients in deep soil come to the top.
Q. 1 Answer:- Plowing makes soil porous which helps the water to penetrate deeper and retain moisture for longer times. This process helps to germinate easily and spread roots deep. It helps the plant to absorb the required nutrients and moisture from the deeper parts of the soil.
Q. 2 Answer:- Crop rotation helps return nutrients to the soil without synthetic inputs. The practice also works to interrupt pest and disease cycles, improve soil health by increasing biomass from different crops' root structures, and increase biodiversity on the farm.
Q.3 Answer:- They rob soil moisture and nutrients from the competing crop and decrease harvest efficiencies. Weeds also compete with the crop for sunlight. Because they are plants competing to survive in a limited space, weeds are actively removing nutrients from the soil to grow taller, stronger and healthier each day.
Q. 4 Answer:- Two means of irrigation systems which conserve water are Drip system and sprinkler system. 1. Drip system- In this method, plants are watered drop by drop at their roots. ... The system provides water to plants drop by drop ensuring that water is not wasted.
Q. 5 Answer:- Field fallow, crop rotation and mixed cropping are three natural methods of replenishing the nutrients of the soil. These natural methods are not enough and farmers have to resort to manures and fertilisers.
Q. 6 Answer:- Categories of Crops in India
Food Crops (Wheat, Maize, Rice, Millets and. Pulses etc.)
Cash Crops (Sugarcane, Tobacco, Cotton, Jute and Oilseeds etc.)
Plantation Crops (Coffee, Coconut, Tea, and Rubber etc.)
Horticulture crops (Fruits and Vegetables)
Q. 7 Answer:- It is necessary to turn and loosen the soil because only loose soil allows the roots to penetrate freely deeper into soil. The roots can breathe easily in loose soil. The deep roots hold the plants more firmly. The water also can reach easily up to more depth in loose soils.
Q. 8 Answer:- In agriculture, ploughing, levelling, and manuring are the three steps of soil preparation.