CBSE Class 9 Answered
What are weeds? Give two examples of weeds. Explain why is the removal of weeds necessary from the cultivated fields? Name any two methods to control weeds.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Weeds are unwanted plants that damage the crops in the cultivated field. Example - xanthium and parthenium.
Their removal is necessary because they compete for food, space and light with the growing crops. They also take up nutrients and reduce the growth of crops
Weeds can be controlled by preventive methods such as intercropping and crop rotation, and by the use of pesticides.
Answered by | 04 Jun, 2014, 03:23: PM
Application Videos
-
Fertilisers for Crop Improvement
This video explains the significance of fertilisers in crop improvement. -
Irrigation for Crop Improvement
This video discusses the measures to be taken in crop improvement in case o...
Concept Videos
-
Improvement in Food Resources
This video explains the sources of irrigation and the methods of water c...
-
Improvement in Food Resources
This video explains the different cropping patterns and the ways to stor...
-
Improvement in Food Resources
This video contains questions on irrigation, cropping patterns and stora...
CBSE 9 - Biology
Asked by bjrathod121 | 18 Jan, 2024, 08:57: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by febievangeline612 | 30 Dec, 2022, 09:45: AM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by slaxmibai1982 | 13 Mar, 2022, 12:26: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by keshav1234554321 | 27 May, 2020, 02:22: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by rkhan84012 | 30 Apr, 2020, 01:56: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by sarthakvatsathegreat | 02 Mar, 2020, 06:38: AM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by teesagajjar2435 | 28 Jan, 2020, 10:35: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by nirajdoiphode2004 | 22 Aug, 2019, 06:28: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by neelsaki007 | 19 Aug, 2019, 04:48: PM
ANSWERED BY EXPERT
