Subject
- Subterranean clover[remove]18
- Rhizobium leguminosarum3
- Soils -- Sulphur content2
- Alfalfa -- Diseases and pests1
- Forage plants1
- Forage plants -- Oregon1
- Grasses1
- Legumes1
- Magnesium1
- Pastures1
- Phosphorus1
- Plants -- Nutrition1
- Plants, Effect of soil acidity on1
- Potassium1
- Red clover1
- Rhizobium1
- Seeds1
- Soil ecology1
- Soils -- Molybdenum content1
- Subterranean clover -- Hybridization1