Seeding furrow opening mechanisms and the soybean planting in lowland areas

Lucas Lopes Coelho, Enio Marchesan, Maurício Limberger de Oliveira, Augusto Dubou Serafin, Roberto Paulo Schütz, Camille Flores Soares, Bruno Behenck Aramburu
2020 Ciência Rural  
ABSTRACT: The objective of this research was to evaluate the effect of seeder furrow opening mechanisms on soil physical characteristics, plant growth, and soybean yield in lowland areas with the presence of compacted layer near the surface. An experiment was conducted in the lowland experimental area of the Federal University of Santa Maria-RS, Brazil, during the 2015/16 and 2016/17 growing season. The experimental design was a randomized block with five replications and four treatments:
more » ... r using shank (S) at 0.23 m depth; S at 0.13 m; Planter using double disk at 0.07 m depth and Raised-bed + S at 0.12 m depth. The use of S at 0.23 m depth allowed reduction of penetration resistance and increase of soil macroporosity in the layers 0-0.1 and 0.1-0.2 m depth in the seeding row. Sowing with S at 0.23 m depth and Raised-bed + S at 0.12 m depth allowed a better development of soybean plants in compacted irrigated rice area (higher nodulation, leaf area index and root growth), as well as higher grain yield.
doi:10.1590/0103-8478cr20190870 fatcat:eylqexkjvvchdm2pldstkwf77y