Grow-Base plays vital role in the balanced nutrition of the plants. Most of the Indian soils are low to medium in their available P-content and require external application of P-for good harvest. It is also a value-added product produced by co-composting different organic wastes with high grade rock phosphate in fine size has become a useful and effective alternate to costly chemical fertilizers.
Composition
Moisture percent by weight, maximum – 25.0
Particle size- Minimum 90% material should pass through 4.0 mm is sieve.
Bulk density (g/cm3) less than – 1.6
Total organic carbon, percent by weight, min. – 7.9
Total nitrogen (as N), percent by weight, min. – 0.4
Total phosphates (as p2o5), percent by weight, min. – 10.4
C:N ratio less than – 20:1
PH (1:5 Solution) max. – 6.7
Conductivity (as dsm-1) not more than – 8.2
Heavy metal content (as mg/kg) percent by weight max.
Arsenic (as as2o3) 10.00
Cadmium ( as Cd) 5.00
Chromium (as cr) 50.00
Copper (as Cu) – 300.00
Mercury (as Hg) – 0.15
Nickel (as Ni) – 50.00
Lead (as Pb) – 100.00
Zinc (as Zn) – 1000.00

Benefitted Crop: – all crops.
Method of Application/Dose:
To take 3 to 4 metric tons of FYM and 200kg of rock phosphate, properly mix both and finally broad cast it over one acre area at moderate moisture level.