crossword on Farming ( steps of agricultural farming)

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Across
  1. 4. The plants and animal wastes that are used as source of plant nutrient.
  2. 5. What does we burn of previous crop for land preparation?
  3. 6. The process of loosening and upturning the soil to make it soft.
Down
  1. 1. It is the placing of seeds at cross marks in the field.
  2. 2. Which is the next step after fertilizes in agricultural farming?
  3. 3. It prevents loss of fertile top layer of soil