Residual effect of rock phosphate and superphosphate
Results are reported of the residual effect of North African finely ground rock phosphate and superphosphate in two field trials on acid fine sand and humus soils. During the first seven years of these trials 166 kg P/ha was applied either as rock phosphate or as superphosphate to cereals and mixed...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
1969-05-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/71728 |