Abstract
ABSTRACT: Runoff in agricultural areas with intensive application of pig slurry can transport significant amounts of nutrients. This study evaluates the effects of different pig slurry (PS) application rates (0, 50, 100, and 200 m3 ha-1) on nutrient loss through runoff during soybean cultivation under no-tillage. It was conducted at two sites in southern Brazil, one on an Alfisol (27° 43′ south and 50° 3′ west) and one on an Inceptisol (27° 47′ south and 50° 18′ west). The PS [...]
Highlights
In the south of Brazil, pig farming, mostly under a confinement regime, is an important economic activity
Up to the first half of 2014, the maximum permitted amount of organic fertilizers applied to crops was 50 m3 ha-1 yr-1, but in the second half of 2014, Normative Instruction No 11 was modified and, from the application of organic fertilizers to the soil has been following the agronomic recommendations as outlined in the Fertilization and Liming Manual (CQFS-RS/SC, 2004), with application rates determined according to soil analysis, the nutritional needs of the crop to be fertilized, nutrient contents, and the agronomic efficiency index of nutrients for each type of organic fertilizer (Fatma, 2014)
This effect was still visible in T2, but the different amounts of pig slurry (PS) applied practically no longer affected the nutrient concentrations in the runoff from T3 and T4
Summary
In the south of Brazil, pig farming, mostly under a confinement regime, is an important economic activity. The intense production and the generation of a large volume of residues in small family farms, sometimes concentrated in a limited area, have led to significant environmental problems (Basso et al, 2017). Pig slurry is applied to the soil as an organic fertilizer, replacing or supplementing the recommended mineral fertilization (Carvalhal et al, 2014). Due to the difficulties in the supervision by the environmental agency and the lack of incentives to farmers, the rules for the application of organic fertilizers are rarely followed, with significant risks for soil, water, and air quality
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
