How To Make Organic biofertilizer in liquid and solid form For healthy crops you need a healthy soil, because a healthy soil contains many good microbes and earthworms. To prepare biofertilizer for half a hectare, you need 10 kg fresh cow dung, cow urine, flour from chickpeas or another pulse, jaggery or unrefined sugar, and a handful of healthy soil. Biofertilizers contain good microbes that make the soil loose and more fertile and also protect plants from diseases | Farmvilla Resource Centre