Across
- 3. a method of pest control that completely fills an area with gaseous pesticides—or fumigants—to suffocate or poison the pests within
- 8. nutrients required by plant in large quantity
- 9. a biotic factor that takes down crops
- 10. a type of pesticide used to kill weeds
- 11. duration of sunlight
- 13. growing of crops in a pre-planned succession
Down
- 1. a type of nutrient crucial for energy
- 2. common name for bacteria, virus and fungi
- 4. lack of nutrition
- 5. they have very sharp incisors to grind almost anything
- 6. a type of manure in which sun hemp and guar are used
- 7. a type of weed
- 10. crossing between 2 genetically dissimilar plants
- 12. a micro nutrient for crops