Phosphate test for grain land: Bingham soil phosphate test enables accurate prediction of yield response of cereals to phosphorus fertilization
oleh: W Martin, J Buchanan
| Format: | Article |
|---|---|
| Diterbitkan: | University of California Agriculture and Natural Resources 1950-12-01 |
Deskripsi
Grain fertilizer tests with uniform fertilizers were applied in over 200 separate field tests in 40 counties during the past three seasons—covering most grain-growing areas of the state and representing a wide range of soil series.