Medium-Term Effect of Organic Amendments on the Chemical Properties of a Soil Used for Vegetable Cultivation with Cereal and Legume Rotation in a Semiarid Climate

The response of a Petrocalcic Palexeroll dedicated to the cultivation vegetables (Apium graveolens L.) with rotation mixture cereals and legumes when organic amendments are added has been studied; specifically, three fertilization treatments were experimented with: two (LSM COA) one chemical fertilizers (I). LSM COA plots managed according regulations governing production, while in I, conventional agricultural production practices used. Over three-year period, monthly samples taken from topsoil analyzed for carbon (OC), total nitrogen (TN), C/N ratio, P (P), electrical conductivity saturation extract (ECext) ions, pH water (pHw) 1 M KCl (pHKCl), cation exchange capacity (CEC), exchangeable bases (Mg2+, K+, Na+), assimilable elements (Fe, Cu, Mn, Zn). results obtained indicated significant differences between OC, TN, C/N, P; case OC mean concentrations 22.2 > 20.1 17.5 g kg−1 LSM, COA, respectively. addition also improved soil function food evidenced by higher K, Mg, micronutrients. ECext extracted ions sensitive such that sequence third year was = values 5.0, 4.8, 3.3 dSm−1, which forced rethink doses applied. These suggest LSM-based agronomic model had beneficial effect on properties contributed its as C sink.