Data/hora: 11/06/2024 20:06:53

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 08/09/2016
Data da última atualização: | 02/12/2016
Autoria: | MAGALHÃES, B. G.; ANDRADE, C. de L. T. de; SILVA, P. P. G. da; GONTIJO NETO, M. M.; LOPES, D. de C.; MELO, B. F. de; GARCIA GARCIA, A.
Afiliação: | Bruna Gomes Magalhães, Bolsista; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS; Priscila Ponciana Gomes da Silva, Bolsista; MIGUEL MARQUES GONTIJO NETO, CNPMS; Daniela de Carvalho Lopes, UFSJ; Bruno Ferreira de Melo, Bolsista; Axel Garcia y Garcia, University of Minnesota.
Título: | Strategies to enhance the productivity of rainfed off-season maize.
Ano de publicação: | 2016
Fonte/Imprenta: | In: ASABE ANNUAL INTERNATIONAL MEETING, 2016, Orlando. [Proceedings]. St. Joseph: ASABE, 2016.
Idioma: | Inglês
Conteúdo: | In Brazil, off-season rainfed maize is usually affected by limited water due to irregularities in rainfall. Alternatives to mitigate these effects include ground cover to reduce evaporation losses and the use of cultivars with a deeper rooting system. We conducted a study in Goias, Brazil, to evaluate the influence of different crop management strategies to mitigate the effect of limited water in maize yield. Modeling was used to simulate scenarios that consisted of 0, 3.5 and 5.0 t ha-1 of soybean residue left on the soil surface combined with cultivar ideotypes with 0.30 m, 0.50 m 0.70 m deep rooting system grown with 60 and 340 kg ha-1of nitrogen. The results showed that maintaining residue in the soil surface in combination with the use of cultivars with deeper rooting systems favored higher yields of off-season maize. Our results also indicated that a cultivar with rooting system in the top 0.50 m of the soil fertilized with a high nitrogen rate tended to be more efficient in the use of the soil available water
Palavras-Chave: | Modelagem.
Thesagro: | Enraizamento; Milho; Plantio direto.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/147162/1/Strategies-enhance.pdf
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (27220-1) - UPC - AA - DD -  -  -  - DIS