Paramasivam S,Alva A K,Leaching of nitrogen forms from controlledrelease nitrogen fertilizers,Communications in Soil Science and Plant Analysis,1997(17/18).
[2]
Paramasivam S,Alva A K,Nitrogen recovery from controlled-release fertilizers under intermittent leaching and dry cycles,Soil Sienee,1997.
[3]
Chatzoudis G K,Rigas F,Macroreticular hydrogel effects on dissolution rate of controlled-release fertilizers,Journal of Agricultural and Food Chemistry,1998.
[4]
Shaviv A,Mikkelsen R L,Controlled-rolease fertilizers to increase efficieney of nutrient use and minimize environmental degradation:A review,Fenilizer Research,1993.
[5]
Tomaszewska M,Jarosiewiez A,Use of poly sulfone in controlled-release NPK fertilizer formulations,Journal of Agricultural and Food Chemistry,2002.