02106naa a2200277 a 450000100080000000500110000800800410001910000190006024500730007926000090015252014070016165000110156865000120157965000090159165000120160065000110161265000140162365000090163765300110164665300110165765300120166870000180168070000190169870000200171777300910173712064082025-04-03       1999    bl uuuu     u00u1 u    #d1 aBALIGAR, V. C.  aEnzyme activities in cerrado soils of Brazil.h[electronic resource]  c1999  aEnzymes play an important role in cycling of organically bound nutrients in soils. Pyrophosphates (PPi), acid phosphatase (AP), arylsulfatase (AS), urease (UR), and dehydrogenase (DH) activities were measured in air-dry samples from the top 15 cm of two dark red Latosols and four red-yellow Latosols from Cerrado regions of Minas Gerais (MG) and Goias (GO) Brazil. Relationships between enzyme activities and soil properties were examined. Among the six soils, the dark red Latosol from Sete lagoas, MG, had the highest activities for AP, AS, and UR enzyzmes. The lowest activities for these enzymes were observed in a dark red Latosol from Uberaba, MG, and this soil also recorded the lowest DH activity. The red-yellos Latosol from Sete Lagoas, MG, had the highest PPi and DH. The activities, whereas a red-yellow Latosol from Felixlandia, MG, gave the lowest PPi activity. Activities of all enzymes were negatively correlated with sand and silt content and positively correlated with pH, organic carbon (c), Bray-P, and exchangeable potassium (k), calcium (Ca), and magnesium (Mg). Soil rganic C appears to have the greatest effect on the level of enzyme activities in acid soils. Each soil type has its own inherent levels of enzyme activities. Knowledge of relationships between enzyme activities and soil properties could be useful in development of sound fertilizer practices for Cerrado soils.  aBrazil  aEnzymes  asoil  aCerrado  aEnzima  aNutriente  aSolo  aBrasil  aEnzyme  aSavanna1 aWRIGHT, R. J.1 aFAGERIA, N. K.1 aPITTA, G. V. E.  tCommunications in Soil Science and Plant Analysisgv. 30, n. 9/10, p. 1551-1560, 1999.