Data/hora: 06/06/2024 01:39:32

Provedor de dados: | 64
País: | Brazil
Título: | Contribution of nitrogen derived from mineral supplementation for soybean seedlings
Autores: | Conceição,Gerusa Massuquini; Martin,Thomas Newton; Brunetto,Gustavo; Backes,Rogério Luiz; Andrade,Fabrício Fuzzer de; Beche,Manoela.
Data: | 2018-02-01
Ano: | 2018
Palavras-chave: | Glycine max (L.) Merrill; Absorption; Distribution; 15N.
Resumo: | 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 seeds from the lot with lower nutritional content absorbed more N from the mineral supplement, which was accumulated in the cotyledons and redistributed to the root systems and cotyledons. At 10 days after sowing, most of the N in the organs of soybean seedlings was derived from the seed reserves, regardless of nutritional content. Thus, application of N through mineral supplementation is of low importance for the development and nutrition of seedlings.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100033
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-70542018421010617
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.42 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess