2024. 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. 28, 2 (Dec. 2024), 68–86. DOI:https://doi.org/10.65814/ijar.2024.28.2.68.