“EFFICIENCY OF LEVELS OF PREPARED SLOW-RELEASE FERTILIZERS (NPK-CHITOSAN), ORGANIC MANURE AND INCUBATION PERIODS ON NITROGEN AVAILABILITY IN TWO DIFFERENT TEXTURE SOILS”. Iraqi Journal of Agricultural Research, vol. 28, no. 2, Dec. 2024, pp. 68-86, https://doi.org/10.65814/ijar.2024.28.2.68.