Question- Which of the following statement is/are the key principles of Zero Budget Natural Farming'?
1. Bijamrita - Seed Treatment using local cowdung and cow urine.
2. Mulching -Mulching to ensure favorable microclimate in the soil.
3. Jiwamrita - Use of biological fertilizers instead of chemicals fertilizers or chemical pesticides in the soil.
4. Waaphasa - Soil aeration
Select the correct statements using the codes given below:
(a)2,3 and 4 only
(b) 1 and 2 only
(c) 1,2 and 4 only
(d) 1,2,3 and 4