Method of making Neemastra :
1. Take 10 kg neem leaves or 5 kg neem seed powder, 10 liters cow urine, 10 kg cow dung, and 200 liters water.
2. Mix all the ingredients well in a plastic or earthen container.
3. Keep the mixture covered and ferment for 24 hours, stirring occasionally.
4. After fermentation, filter the solution and use it for spraying on crops.