قشعور ب. , سوسن عبدالله هيفا, أمجد حسن بدران and نصر شيخ سليمان 2022. The content of clay soil planted with capsicum changed from some major nutrients according to a proposed model for a fertilizer equation. Tishreen University Journal -Biological Sciences Series. 44, 5 (Nov. 2022), 167–179.