Contribution of maize crop residues and fertilization to nitrogen nutrition of soybean grown under no-tillage system.
| dc.contributor | ISABELI PEREIRA BRUNO, AGROMETEOROLOGY, ECOPHYSIOLOGY AND FOOD TECHNOLOGY DEPARTMENT, RURAL DEVELOPMENT INSTITUTE OF PARANÁ (IDR-PARANA ́) | |
| dc.contributor | VINICIUS IDE FRANZINI, CNPUV | |
| dc.contributor | TAKASHI MURAOKA, SOIL FERTILITY DEPARTMENT, CENTER FOR NUCLEAR ENERGY IN AGRICULTURE (CENA), UNIVERSITY OF SÃO PAULO (USP). | |
| dc.creator | BRUNO, I. P. | |
| dc.creator | FRANZINI, V. I. | |
| dc.creator | MURAOKA, T. | |
| dc.date | 2025-12-10T11:48:53Z | |
| dc.date | 2025-12-10T11:48:53Z | |
| dc.date | 2025-12-10 | |
| dc.date | 2025 | |
| dc.date.accessioned | 2026-07-07T11:32:13Z | |
| dc.description | Nitrogen (N) is essential for plant growth and, consequently, a key factor in the productivity and sustainability of agriculture. Soybean and maize require large amounts of N during the growing season. Although soybean primarily relies on biological nitrogen fixation, this source alone does not meet the crop’s total N requirements. Maize-soybean rotation is common under no-tillage systems, but the contribution of maize stover and N fertilizer to the subsequent soybean crop had been unclear. This study used a two-season field experiment to quantify N uptake and recovery in maize and the following soybean crop. Maize was fertilized with increasing rates of N-urea, and 15N tracing was used to assess N dynamics in the shoots of both maize and the subsequent soybean. Most of the N in maize shoot was derived from the soil, with up to 37% originating from fertilizer. In both crops, grains were the primary N sink, and high yields were achieved. In soybean, N uptake from maize stover and residual fertilizer was minimal, with a maximum recovery of 9% in the grain. These findings reveal for the first time the limited short-term contribution of N-urea applied to maize and its stover to soybean nutrition, suggesting that soil N plays an important role in supplying N to the soybean system. | |
| dc.format | 16 p. | |
| dc.identifier | Frontiers in Agronomy, v. 7, n. 1621756, Aug. 2025. | |
| dc.identifier | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1182588 | |
| dc.identifier | 10.3389/fagro.2025.1621756 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/511409 | |
| dc.language | eng | |
| dc.rights | openAccess | |
| dc.subject | N | |
| dc.subject | Zea mays L | |
| dc.subject | Glycine max L | |
| dc.subject | Crop residues | |
| dc.subject | Isotopes | |
| dc.title | Contribution of maize crop residues and fertilization to nitrogen nutrition of soybean grown under no-tillage system. | |
| dc.type | Artigo de periódico |