000			03089nab a2200373 i 4500
003			BR-BrBNA
005			20250512150637.0
008			250512b2020 bl.mr|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aP34 _b0336
072			_aP33
100			_aPires, Maria de Fátima Marques
100			_aMedeiros, João Carlos
100			_aSouza, Henrique Antunes de
100			_aRosa, Jaqueline Dalla
100			_aBoechat, Cácio Luiz
100			_aMafra, Álvaro Luiz
100			_aNolêto, Kyvia Corrêa
100			_aRocha, Angélica Gomes da
245			_aConservation system improves soil microbial quality and increases soybean yield in the Northeastern Cerrado
500			_aPublicação on-line; 39 ref.; 3 illus; 4 tables; Sumaries (En)
520			_a ABSTRACT: 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. Key words: Glycine max L., soil quality, no-tillage, nutrient cycling, microbial biomass
650			_aSOJA
650			_aANÁLISE DO SOLO
650			_aQUALIDADE
650			_aMICROBIOLOGIA
650			_aPRODUTIVIDADE DO SOLO
650			_aPLANTIO DIRETO
650			_aSISTEMA DE CULTIVO
773	0		_01365 _9344638 _dCampinas-SP Instituto Agronômico - Coordenadoria da Pesquisa Agropecuária 1941 _o2024-4960 _tBragantia (Brazil) _x0006-8705 _gv. 49 p. 474-486; (2020) _wBR2025001051
856			_uhttps://www.scielo.br/j/brag/a/tNkv4Y3bzcmQz5bsdktML6M/?format=pdf&lang=en
942			_cANA
999			_c331434 _d331434