How land preparation is done for moringa farming?

Moringa plants require a deep ploughing of the land before plantation and about 20 tonnes of farmyard manure are added to per hectare of the land. The pit of about 45×45×45 cm is dug, maintaining a space of 6×6 m for perennial crops and a space of 2.5×2.5 m for annual crops. Each pit is then followed by adding a mixture of 10 to 15 kg of farmyard manure with 100g of Nitrogen, 200g of Phosphorus and 50g of Potassium.