EVALUATION IMPACT OF SOIL ORGANIC MATTER AND CALCIUM CARBONATE IN SOIL AVAILABILITY PHOSPHORUS QUANTITY IN THE SOUTHERN PART OF BABYLON BY GIS USING . Iraqi J. Agric. Res. [Internet]. 2018 Dec. 25 [cited 2026 Sep. 18];23(2):55-6. Available from: https://ijarmoa.gov.iq/index.php/ijar/article/view/5