Physical and chemical properties of soil irrigated with vinasses for the growing of sugarcane in the central region of Veracruz

Abstract

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.