Physical and chemical properties of soils irrigated with vinasses for the cultivation of sugarcane (Saccharum spp.) in the central region of Veracruz, Mexico

Objective: To evaluate the physical and chemical properties of a soil with vinasse application (two years) (V), compared to a soil without vinasse (W/V). Design/methodology/approach: In both agroecosystems, the evaluated parameters were texture, pH, electrical conductivity (EC), organic matter (OM), phosphorus (P), potassium (K), nitrates (NO3) and total nitrogen (TN) according to standardized methods in NOM-021-SEMARNAT-2000. Results: There were no significant changes (p>0.05) in the pH and electrical conductivity, however, the application of vinasse significantly increased (p˂0.05) the content of TN (1.52%), K (112.00 mg L-1) and OM (4.52%) in relation to soils W/V (0.78%, 25.60 mg L-1, 7.40 mg L-1, 2.75%, respectively). Limitations on study/implications: In Veracruz state, there are few studies that allow knowing the contributions, and physical and chemical effects on soils irrigated with vinasses. Findings/conclusions: Even though, the vinasse used showed a positive effect on the physical and chemical characteristics of the soil (V), the mineral fertilization program must be reformulated to increase the concentration of potassium and phosphorus in soils with silt loam texture. In addition, it is recommended to adjust and normalize the dose of N that vinasse can provide instead of conventional fertilizers. Keywords: Soil fertility, sugarcane, vinasses.Objective: To evaluate the physical and chemical properties of a soil irrigated with vinasse for two years (+V), compared with a soil without vinasse (-V) application.Design/Methodology/Approach: The following parameters were evaluated for both agroecosystems: texture, pH, electrical conductivity (EC), organic matter (OM), phosphorus (P), potassium (K), nitrate (NO 3 ), and total nitrogen (TN). The evaluation followed the standardized methods established in NOM-021-SEMARNAT-2000.Results: There were no significant changes (p > 0.05) in the soil’s pH and electrical conductivity. However, the application of vinasse significantly increased (p < 0.05) the concentrations of TN (1.52%), K (112.00 mg L -1 ), and OM (4.52%) in relation to soils - V (0.78%, 25.60 mg L -1 , 7.40 mg L-1 , and 2.75%, respectively). Study Limitations/Implications: There are few studies about the contributions and the physical and chemical effects of soil irrigation with vinasses in the State of Veracruz.Findings/Conclusions: Even though vinasse had a positive effect on the physical and chemical characteristics of the soil, the mineral fertilization program must be reformulated to increase the K and P concentration in soils with silt loam texture. In addition, we recommend adjusting and normalizing the dose of N that vinasse can provide to complement conventional fertilizers