Methods of Soil Fertility Evaluation
Different Methods of Soil Fertility Evaluation are:
1. Biological Method:
.
a. Field trials
b. Pot culture
c. Neubauer seedling method
d. Aspergillus niger method.
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2. Use of visual symptoms of nutrient deficiency or toxicity method.
3. Plant Analysis Method:
a. Total elemental analysis
b. Plant tissue tests
4. Soil Analysis Method:
Soil testing has been used by soil scientist as an aid in determining soil fetility level.