Across
- 3. Unwanted plants growing in crop fields
- 5. Chemical added to soil for plant nutrition
- 8. Poison sprayed to kill organism that attack crop
- 9. A practice of growing two or more types of crops in the same field as the same time to improve yield
- 10. A channel that carries water from rivers to fields
- 11. killing pests in crop stores with toxic vapour
- 12. A natural additive put in soil to increase nutrition
Down
- 1. A movement in which scientists improved crop variety to increase food production
- 2. System of providing water to plants artificially
- 4. A method of improving crop producting by selective breeding
- 6. Once of the three macronutrients needed by plants
- 7. A macro nutrient taken by plant from soil though abundant in air