| Texto completo | |
| Autor(es): |
Batista, Karina
;
Vilela, Laize Aparecida Ferreira
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AGRONOMY-BASEL; v. 13, n. 5, p. 17-pg., 2023-04-28. |
| Resumo | |
In Brazil, grain crops in no-till soybean-maize succession have reduced biodiversity and carbon input into soil. Intercropping is a promising approach to address these problems. This study aimed to evaluate the microbiological quality of soil in conventional and intercropping systems in soybean-maize succession, depending on tropical grass and nitrogen fertilizer uses. The treatments were arranged in a randomized complete block design and a split plot scheme, with four replications. The main plots consisted of the following cropping systems: soybean monoculture-maize monoculture; soybean intercropped with Aruana Guinea grass (Megathyrsus maximum cv. Aruana)-maize intercropped with Aruana Guinea grass; and soybean intercropped with Congo grass (Urochloa ruziziensis cv. Comun)-maize intercropped with Congo grass. The subplots consisted of nitrogen rates (0, 50, 100, and 150 kg ha(-1)) applied as side-dressing in rows of maize and tropical grass in the autumn-winter season. Our results showed that maize or soybean intercropped with tropical grasses and adequate nitrogen rates favored the entry of microbial carbon and nitrogen, stimulated enzymatic activity, and reduced C-CO2 loss. However, the excess nitrogen supply can nullify the benefits of the intercropping systems. We concluded that the intercropping systems can improve soil microbiological quality in a short time with adequate nitrogen supply. (AU) | |
| Processo FAPESP: | 19/02387-6 - Plantas forrageiras e nitrogênio na sucessão soja - milho safrinha para o desenvolvimento de sistemas alimentares sustentáveis |
| Beneficiário: | Karina Batista |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/50339-5 - Plano de desenvolvimento institucional de pesquisa do Instituto de Zootecnia (PDIp) |
| Beneficiário: | Lenira El Faro Zadra |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Modernização de Institutos Estaduais de Pesquisa |