The purpose of this work was to investigate the effect of one synthetic soil conditioner (potassium propenoate) and two kinds of organic products (sugar Mill factory residue and poultry manure) in the physical properties of soils with compactacion problems of the Cauca Valley. Four types of soils were utilized: fluventic haplustoll (1), Pachic haplustoll (2), Typic pellustert (3), and Petrocalcic natrustalf (4). Soybean P-32 was indicator plant, utilizing a completely randomized block design with nine treatments and three replications. The leaf area and yield of total dry matter were significatively better with syntetic conditioner in liquid form for soil L; the soil conditioner applied in solid form and the poultry manure were of significant levels for soils 2 and 3. Significant differences were found in favor of the synthetic conditioner for the air space variable in soils (1), (2) and (3); for the bulk density, measured in dry and wet states, and the penetrometer resistance variables for soil (2). Soil chemical analysis showed adequate levels for plant growth in soils 1, 2,3 for major and minor elements, except for boron.