Effect of residual nitrogen and fertilizer nitrogen on sugar beet production in Finland
Preliminary determinations for NO3- and NH4-N in topsoil from nitrogen field experiments are discussed. The amounts of residual nitrogen as well as the dates and depth for sampling are considerd in order to investigate the need of fertilizer-N for continuous sugar beet. Tops ploughed down as manure...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Scientific Agricultural Society of Finland
1974-09-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/71890 |