EFFICIENCY OF LEVELS OF PREPARED SLOW-RELEASE FERTILIZERS (NPK-CHITOSAN), ORGANIC MANURE AND INCUBATION PERIODS ON NITROGEN AVAILABILITY IN TWO DIFFERENT TEXTURE SOILS. Iraqi J. Agric. Res. [Internet]. 2024 Dec. 25 [cited 2026 Sep. 18];28(2):68-86. Available from: https://ijarmoa.gov.iq/index.php/ijar/article/view/39