ATP Education

ATEducation.com Logo

The Secure way of Learning

   Welcome! Guest

LogIn    Register       

 

Sponser's Link
Sponser's Link

Sponser's Link

Join Us On Facebook
CBSE And NCERT Solutions:

NCERT Books Solutions for Class 8 Science english Medium 1. Crop Production And Management

Select Your Subject: CBSE English Medium

 

NCERT SolutionsClass 8th Science Chapter 1. Crop Production And Management
Page 3 of 5

1. Crop Production And Management

 

Text Book Exercise

 

Text Book Exercise 


Ques: Explain how fertilisers are different from manure.

Ans:  Fertilisers are different from manure in following manner.

             Manure

          Fertilizer

(i) It is prepared by organic substances.

(ii) It is rich in all nutrients.

(iii) ex. Compost Manure.

(i) It is prepared by chemical substances.

(ii) It is rich in particular nutrients.

(iii) Urea, Potash and ammonium sulphate etc.

Ques: What is irrigation? Describe two methods of irrigation which conserve water.

Ans : The supply of water to crops at different intervals is called irrigation.

There are two modern methods of irrigation which conserve water.

(i)  Sprinkler system – This system is more useful on the uneven land where sufficient water is not available.

(ii)  Drip system – In this system, the water falls drop by drop just at the position of the roots. So it is called drip system. It is the best technique for watering fruit plants, gardens and trees.

Ques: If wheat is sown in the kharif season, what would happen? Discuss.

Ans:  In kharif season, there have a lot of rainfall. Where, wheat does not need the heavy rainfall.  It  will be destroyed as well as water logging. 

Ques: Explain how soil gets affected by the continuous plantation of crops in a field.

Ans: Continuous plantation of crops makes the soil deficient in certain nutrient in a field. Further the crops do not grow well. To avoid this, the following practices should be done.

(i) Crop rotation.

(ii) Manuring the soil

(iii) Leaving field fallow.

Ques: What are weeds? How can we control them?

Ans : Many other undesirable plants may grow naturally along with the crop. These undesirable plants are called weeds. Weeds are harmful for crops. These take all nutrients water and light from soils which are added for crops. Weeds can be removed manually or by using weedicides. Manually there is used a Khurpi while by using weedicides we use chemical substances like 2, 4-D, which damage only weeds and do not harm to crops.  

www.atpeducation.com

www.atpeducation.com

 

 

Page 3 of 5
Download Our Android App
Get it on Google Play
Feed Back

Roshan Class X says:

"6"

Shadab Khan Class X says:

"make fast all science pages geography "

Shivam Bajpai All Class says:

"ये पेज under construction क्युं है .plz fix this prob..."

Krishan Class X says:

"this very good website i really appreciate which provide no cost education to all medium classes"

Vimal Class XI says:

"Not able to find the content....as instructed."

Kamini Class X says:

"every chepter is imcomplete....this side is not useful"

Ashok Swami All Class says:

"10th science ka Lesson-8 ka page no.5 kab take under construction rahega please improve it."

Rishabh Gupta Class XI says:

"how can i understand difference between permutation and combination word problem"

Rishabh Gupta Class XI says:

"i want to learn parts of speech"

KASHIF ALI Class VIII says:

"Please update all the syllabus of class 8"

ATP Education

 

 

Follow us On Google+
Join Us On Facebook
Sponser's Link
Sponser's Link