Precautions before sowing a crop are that before sowing a crop, the field is leveled and ploughed. The seed may be treated with fungicides to check diseases. Now the seed may be sown at the right depth and with the right spacing either with hands or with the help of seed drill. The seeds of wheat and bajra should not be sown too deep or in wet soil because their seedling cannot respire properly and the germinating plumule will not come out.
Short note on food adulteration