The advantages of VRF method

  • Adaptable practically in all regions and at all seasons and choice of place of compost preparation is wide in the plantation.
  • Watering in summer is dispensed with and nutrients getting washed-off during rainy season do not arise.
  • There is no necessity of mixing or turning the compost meant for perennial crops where C-N ratio of the compost about 20:1 is ideal.
  • For annual crops, a narrower C-N ratio could be obtained either by extending the composting duration (5-6 months) or by giving two turnings. This operation is also necessary when the material is suspected to contain pathogenic organisms.
  • Because of plastic lining to the whole heap, the final compost will have (i) higher retention of nutrients (ii) higher ratio of the composted material to the raw material and (iii) consequently a perceptible increase in the total quantity of the nutrients recovered per unit mass of the original material is obtained.
  • The method is amenable for multiplication of beneficial organisms such as Trichoderma, Azotobacter, Azospirillum, P-solubilizing bacteria etc.
VRF compost is cheaper than fertilizers as is clearly brought out here.

Manure (Nutrient Content) Cost in Rupees per Kg.
Manure Nutrient Utilized Nutriant**
Suphala (15:15:15)-Complex Fertilizer 7.20 16.00 53.33
Coffee husk manure* (2:2:2) 0.93 15.50 19.38
* Fresh manure with 50% moisture
** Utilization efficiency of chemical fertilizer is 30% and that of organic manure 80%

 
 
Overview
VRF Composting Methodology
The advantages of VRF method
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