Grain yield, efficiency and the allocation of foliar N applied to soybean canopies
| Autor: | Paulo Cesar Ocheuze Trivelin, Clovis Pierozan Junior, Silas Maciel de Oliveira, Bruno Cocco Lago, Rodrigo Estevam Munhoz de Almeida, José Laércio Favarin |
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| Přispěvatelé: | SILAS MACIEL DE OLIVEIRA, ESALQ, CLOVIS PIEROZAN JUNIOR, INSTITUTO FEDERAL DE EDUCAÇÃO, Palmas-TO, BRUNO COCCO LAGO, ESALQ, RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA, PAULO CESAR OCHEUZE TRIVELIN, CENA, JOSE LAERCIO FAVARIN, ESALQ. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Fertilizante Nitrogenado Soja chemistry.chemical_element Growing season engineering.material 15n tracer 01 natural sciences Human fertilization Foliar fertilization Nitrogênio lcsh:Agriculture (General) Nitrogen fertilizers Mathematics Glycine Max fungi food and beverages 04 agricultural and veterinary sciences lcsh:S1-972 Nitrogen nitrogen recovery efficiency 15N tracer chemistry Agronomy Glycine max (L.) Merr foliar application Shoot foliar N fertilization 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Grain yield Soybeans Fertilizer 010606 plant biology & botany |
| Zdroj: | Scientia Agricola v.76 n.4 2019 Scientia Agrícola Universidade de São Paulo (USP) instacron:USP Scientia Agricola, Volume: 76, Issue: 4, Pages: 305-310, Published: JUL 2019 Scientia Agricola, Vol 76, Iss 4, Pp 305-310 Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) |
| Popis: | Soybean [Glycine max (L.) Merr.] grain yield is closely associated with the level of optimal nitrogen (N) supply, especially during the reproductive stages. Foliar fertilization with low rates of N have been considered as a strategy for furnishing additional N and enhancing grain yields. Field studies using 15N tracer were conducted over two growing seasons to investigate the impact of foliar N fertilization on grain yield, plant N content, the amount of N derived from fertilizer (NDFF) and N recovery efficiency (NRE). Four foliar N rates (0, 1300, 2600 and 3900 g ha?1) were supplied by two equal split applications at the R1 and R3 stages. Foliar N fertilization of soybean canopies did not affect grain yield, grain N content, shoot N content nor plant N content. Total NDFF was increased from 0.7 to 2.0 kg ha?1 across the N rates. Nonetheless, NRE was unaffected by foliar N fertilization, which averaged 53 %. Soybean plants allocated the same amount of N fertilizer to both grains and shoots. No significant effects of low rate foliar N fertilization were registered on soybean grain yield nor plant N content, despite considerable N fertilizer recovery by plant organs. Made available in DSpace on 2019-05-15T00:32:35Z (GMT). No. of bitstreams: 1 CNPASA2019sa2.pdf: 586608 bytes, checksum: 9eb1f30431380c0d3696d3de4b5bbf09 (MD5) Previous issue date: 2019 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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