|
|
|
|
|
| Conceição,Gerusa Massuquini; Martin,Thomas Newton; Brunetto,Gustavo; Backes,Rogério Luiz; Andrade,Fabrício Fuzzer de; Beche,Manoela. |
| ABSTRACT Seeds can absorb N from mineral supplementation, thus stimulating seedling development in soybeans (Glycine max (L.) Merrill). This study aimed to evaluate the contribution to soybean seedlings of N derived from mineral supplementation in seeds with different nutritional contents. Seeds of the cultivar BMX Potência RR received mineral supplementation enriched with 2.5% excess 15N. The treatments were performed in seeds in two lots, one with high and one with low nutritional content. At 2, 6 and 10 days after sowing on paper towels, the seedlings were collected and separated into cotyledons, roots and shoots. Dry matter production, root length and root volume were assessed. Total N and 15N values were analyzed in the seedling organ tissues. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.) Merrill; Absorption; Distribution; 15N.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100033 |
| |
|
|
| Martins,Júlio César Rodrigues; Freitas,Ana Dolores Santiago de; Menezes,Rômulo Simões Cezar; Sampaio,Everardo Valadares de Sá Barretto. |
| The objective of this work was to estimate the amounts of N fixed by cowpea in a traditional system and by cowpea and gliricidia in an agroforestry system in the Brazilian Northeast semiarid. The experiment was carried out in a randomized complete block design, in a split-plot arrangement, with four replicates, in the semiarid region of the state of Paraíba, Brazil. Plots consisted of agroforestry and traditional systems (no trees), and split-plots of the three crops planted between the tree rows in the agroforestry system. To estimate N fixation, plant samples were collected in the fourth growth cycle of the perennial species and in the fourth planting cycle of the annual species. In the agroforestry system with buffel grass and prickly-pear cactus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gliricidia sepium; Vigna unguiculata; Biological nitrogen fixation; Natural abundance; 15N.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000200178 |
| |
|
|
|
