Título:	Conservation system improves soil microbial quality and increases soybean yield in the Northeastern Cerrado.
Autoria:	PIRES, M. de F. M. MEDEIROS, J. C. SOUZA, H. A. de ROSA, J. D. BOECHAT, C. L. MAFRA, A. L. NOLETO, K. C. ROCHA, A. G. da
Afiliação:	Maria de Fátima Marques Pires, Universidade Federal do Piauí – Campus Professora Cinobelina Elvas – Bom Jesus João Carlos Medeiros, Universidade Federal do Sul da Bahia – Centro de Formação em Ciências Agroflorestais – Itabuna HENRIQUE ANTUNES DE SOUZA, CPAMN Jaqueline Dalla Rosa, Universidade Federal do Sul da Bahia – Centro de Formação em Ciências Agroflorestais – Itabuna Cácio Luiz Boechat, Universidade Federal do Piauí – Campus Professora Cinobelina Elvas – Bom Jesus Álvaro Luiz Mafra, Universidade do Estado de Santa Catarina – Centro de Ciências Agroveterinárias – Lages Kyvia Corrêa Nolêto, Universidade Federal do Piauí – Campus Professora Cinobelina Elvas – Bom Jesus Angélica Gomes da Rocha, Universidade Federal do Piauí – Campus Professora Cinobelina Elvas – Bom Jesus.
Ano de publicação:	2020
Referência:	Bragantia, Jul. 2020.
Páginas:	13 p.
Conteúdo:	The conservation tillage systems is based on the surface protection by crop residue and reduced soil disturbance. These two principles can favor the soil quality and promote sustainable agricultural systems. The study was developed with the objective of measure soil microbial biomass, soil basal respiration, enzymatic activity and soybean yield in conservation systems cultivated with cover crops species in the Northeastern Cerrado. The experiment was carried out in 2016/2017 and 2017/2018 cropping seasons, performed in a randomized blocks design. The treatments were soil tillage systems allocated in the main plots: no-tillage (NT) and minimum tillage (MT) and the cover crops were allocated in the subplots: Pennisetum glaucum (millet), Urochloa ruziziensis (brachiaria), Crotalaria spectabilis (C. spectabilis), Crotalaria ochroleuca (C. ochroleuca), Pennisetum glaucum + Crotalaria spectabilis (millet + C. spectabilis) and spontaneous plants with three replicates. The evaluated variables were dry mass (DM) production and nutrient accumulation in cover crops; soil biological properties, namely microbial biomass carbon and nitrogen (MBC and MBN, respectively), respiration, metabolic quotient (qCO2), dehydrogenase enzymatic activity (DH), fluorescein diacetate (FDA); and soybean yield. The higher production of dry mass and nutrient cycling occurs with the intercropping millet + C. spectabilis and single millet. The highest soybean yield occurs in succession to C. ochroleuca and intercropping of the millet + C. spectabilis. Cover crops in conservation systems improve soil microbial quality and increase soybean yield.
Thesagro:	Plantio Direto Biomassa Glycine Max
NAL Thesaurus:	Soil quality No-tillage Nutrient resorption (physiology) Microbial biomass
Palavras-chave:	Qualidade do solo Ciclagem de nutriente
ISSN:	1678-4499
Digital Object Identifier:	https://doi.org/10.1590/1678-4499.20200117
Notas:	Ahead of Print.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPAMN)