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Igras J.,Instytut Nawozow Sztucznych | Winiarski R.,Instytut Uprawy Nawozenia | Karsznia M.,Zaklady Azotowe Pulawy SA | Rusek P.,Instytut Nawozow Sztucznych | And 3 more authors.
Przemysl Chemiczny | Year: 2012

Liq. N-S fertilizers were prepd. by using urea and waste (NH 4)2S04 solns. from caprolactam prodn. and studied for effectiveness in winter rape culture in field expts. The crop of seeds was substantially increased after the fertilizing. The fat content in the seeds decreased but the final yield of the fat was also increased (up to 164.8 kg/ha). Source

Borowik M.,Instytut Nawozow Sztucznych | Rusek P.,Instytut Nawozow Sztucznych | Rusek P.,Zaklady Azotowe Pulawy SA | Oleksiak S.,Zaklady Azotowe Pulawy SA | And 2 more authors.
Przemysl Chemiczny | Year: 2013

Mixts. of (NH2)2CO, (NH4) 2SO4 and optionaly kieserite were compacted by using a roll press and disintegrated to resp. fertilizer granulates. The optimum quality was achieved when (NH2)2CO/(NH4) 2SO4 mass ratio was 25:75. Source

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