Compaction of metal salt-urea complexes with triple superphosphate

Published on Jan 1, 1987in Nutrient Cycling in Agroecosystems2.848
· DOI :10.1007/BF01066611
S. H. Chien23
Estimated H-index: 23
(International Fertilizer Development Center),
C. B. Christianson8
Estimated H-index: 8
(International Fertilizer Development Center)
+ 1 AuthorsG. E. Peters1
Estimated H-index: 1
(International Fertilizer Development Center)
It has been the experience of the fertilizer industry that urea should not be cogranulated or blended with superphosphate because urea reacts with monocalcium phosphate monohydrate (MCP·H2O) in superphosphate to form an adduct. This reaction releases the water of hydration and causes the product to become wet and sticky or severely caked during storage. The objectives of this study were [1] to test the feasibility of preventing or retarding the reaction by complexing the urea with various salt hydrates and [2] to measure ammonia volatilization from metal salt-urea complexes on the soil surface.
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