Productivity of soybean as a function of soil compaction and doses of phosphorus / Produtividade de soja em função da compactação do solo e doses de fósforo

• Autor(a) principal: Da Silva, Gustavo Ferreira
• Data de Publicação: 2020
• Outros Autores: Mapeli, Nilbe Carla, Cremon, Cassiano, Da Silva, Gabrieli Ferreira, Luperini, Bruno Cesar Ottoboni, Chamma, Larissa, De Oliveira, Altacis Junior, Da Silva, Adeilson Nascimento, Mapeli, Ana Maria
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Veras
• DOI: 10.34117/bjdv6n10-698
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/19120
• topic: Glycine max; root distribution; soil compaction; soil penetration resistance.

Soybean (Glycine max (L) Merril) is one of main responsible for Brazilian economic performance, however, compaction and soil phosphorus deficiency can drastically affect its development and productivity. In view of this our aim of this research was to evaluate root development and productivity of soybean in compacted soil and with different doses of P2O5. The experiment was done in a randomized block design, in a split plot scheme, with three replicates. We tested four compaction levels (0, 2, 4 and 8 number of tractor strokes) and four doses of P2O5 (0, 100, 250 and 500 kg ha-1). Compaction with 4 and 8 tractor strokes reduced the root distribution in soil depth of 0-0.05m. Increase in doses of phosphorus reduced proportionally to the height of the first pod. Dose of 500 kg ha-1 of P provided increased productivity in treatment with 2 tractor strokes. And doses of 100 and 250 kg ha-1 of P provided increases in productivity of 9.53% and 79.12%, respectively, in soils with 2 of tractor strokes.