- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Cátedra de Edafología. Facultad de Ciencias Agropecuarias. Universidad Nacional de Córdoba. Ciudad de Córdoba, Argentina
- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Área Suelos y Producción Vegetal, Instituto Nacional de Tecnología Agropecuaria, Ruta Nº ۱۲ km ۳, Marcos Juárez, Córdoba, Argentina
- - - Cátedra de Edafología. Facultad de Ciencias Agropecuarias. Universidad Nacional de Córdoba. Ciudad de Córdoba, Argentina
- - - Cátedra de Fertilidad y Fertilizantes. Facultad de Agronomía. Universidad de Buenos Aires. Ciudad de Buenos Aires, Argentina

Purpose In Argentina, pig slurry (PS) is spread in surface with N losses in ammonia form. Different methods to decrease these emissions are available, but there is poor information about their impacts on the soil-plant system. The objective of this study was to compare the effects of different PS application methods on the soil quality in a maize-soybean cropping sequence. Methods PS application methods were evaluated: acidified (AS), incorporated (IS), surface (SS), mineral fertilization (MF) and control (C). The experimental design was arranged in a randomized block with three replicates. Chemical parameters and microbiological parameters were determined. Also, grain yields and N uptake were measured. Results IS caused increases in anaerobic nitrogen and basal respiration of soil on soybean. Treatments with PS and/or FM showed lower values in pH than C in both crops, and higher electrical conductivity only in maize. SS treatment showed higher Pe on soybean, indicating a maintenance of the P levels with respect to those in MF and C. The concentration of NO۳- increased with MF in both crops. In maize, MF presented similar concentrations to AS and SS. IS increased grain yields of maize by ۱۶ %, whereas SS and AS increased yields of soybean by ۱۱۲% and ۷۹%, respectively, compared to C. Conclusions The different PS application methods had similar effects on most of the indicators of soil quality. In maize, IS and AS were more efficient in retaining N within the soil-plant system, whereas, in soybean, the SS led to higher yields.

Pig slurry incorporation, Pig slurry acidification, Mineral fertilization, Chemical soil, Microbiological soil, Yield crops