The Effect of Organic and Mineral Fertilization on The Values of Soluble Potassium Inside and Outside Rhizosphere of Zea Maize (zea mays L.) Raid Shaalan Jarallah; Jibreel Abbas Mohammed Volume 8, Issue 1, June 2018, Page 13-22 10.33794/qjas.2018.162646 Show Article PDF 0 K