SUBJECT
Rice
Soils
Fertilizers and manures
6
Analysis
5
Nitrogen
2
Plant-soil relationships
2
Content
1
Drainage
1
Iron content
1
Leaching
1
Liming of soils
1
Manganese content
1
Phosphatic fertilizers
1
Phosphorus
1
Phosphorus as fertilizers
1
Phosphorus content
1
Soil
1
Soil acidity
1
Soil moisture
1
Sulphur content
1
zinc content
1