ORIGINAL RESEARCH
Cattle Horn Shavings as Slow Release
Nitrogen Fertilizer
Juozas Pekarskas1, Saulius Žibutis1, Violeta Gražulevičienė1,
Ilona Grigalavičienė1, Romas Mažeika2
Pol. J. Environ. Stud. 2015;24(2):645-650
ORIGINAL RESEARCH
PAA-Based Hybrid Organic-Inorganic
Fertilizers with Controlled Release
B. Tyliszczak, J. Polaczek, K. Pielichowski
Pol. J. Environ. Stud. 2009;18(3):475-479