কৃষিবিজ্ঞান (Agronomy)
দ্বাদশ শ্রেণির জন্য
সূচিপত্র (Index)
| S/L | বিষয় | আলোচ্য বিষয়বস্তু |
| 1 | Growth of crop; concept of field components; growth stages of crops; preliminary conceptof the development physiology related to growth of crops such as rice, wheat, potato andjute. | |
| 2 | Major and minor plant nutrients and their availability to plants; soil organic matter andsoil organisms, soil reaction and ion exchange; saline, sodic and acid soils, soil erosionand its control. | |
| 3 | Manures and fertilizers: | |
| 4 | Crop production and propagation | |
| 5 | Crop protection | |
| 6 | Law of diminishing returns in fertilizer use, special features of rainfed and irrigatedagriculture. Cost of production of crops and important farm operations like ploughing,weeding, harvesting, threshing etc | |
- 401 views
