[PDF] Top 20 Tillage, fertilization systems and chemical attributes of a Paleudult

... ABSTRACT: Tillage and fertilization methods may affect soil ...aim of assessing changes in soil chemical properties over a period of ten years, soil samples of a ... See full document

... conventional tillage (CT) with no-tillage (NT) management alters the pe- doenvironment and the rate of topsoil processes, with possible effects on dissolution processes associated with iron ... See full document

... Nitrogen fertilization with fertilizers containing ammonium or urea has been implicated as the main cause of soil acidification in agricultural systems (COSTA et ...magnitude of the ... See full document

... MCD of Kt was calculated from the WHH of the reflection (001) in an iron-free sample using halite as internal standard to obtain the b value (parameter of the equation used to calculate ...(Klug ... See full document

... effect of the interaction sampling year x tillage concerning K contents (Table 6), it was observed that the significance only occurred for the no-tillage ...year of 2005 the period when the ... See full document

... cerrado and produces chestnuts and wood, being a tree option for agroforestry ...inclusion of agricultural areas in agroforestry consortia is a sustainable alternative for small farmers, especially ... See full document

... February, and October 2009 were higher in the soil of the DL180 treatment (Table ...soil of the DL90 treatment (deep pig litter at recommended level) presented a basal respiration value lower than ... See full document

... soil tillage under consolidated NTS can neither have effect on soil organic carbon content (Crawford et ...stratification of the chemical and physical attributes of the soil, ... See full document

... proportion of the total SOM and show a higher increase (in absolute terms) under no-tillage, compared with that in labile SOM ...effect of different land use and soil management ... See full document

... area of native forest (F) was used as reference. Crop rotation in the NT and CT systems followed this sequence: soybean/corn in the summer and wheat in the ...type and spatial ... See full document

... 60% of field capacity. They were then homogenized and sieved through a 2 mm ...ratio of 1:2.5 and a correction factor (kc) of ...mL of ethanol-free chloroform was added to each ... See full document

... age of patients diagnosed with urinary myopericytoma was variable, with the youngest patient being a 33-year-old ...None of these patients developed any evidence of recurrent or metastatic disease ... See full document

... Bags of each tissue type were either buried at 10 cm depth or kept on the ...harvest and then at one month inter- vals, 5 g of each bag was collected and washed under run- ning ...water ... See full document

... degree of intercalation of Al hydroxyl layers in soil under ...effect of only organic matter on the environmental conditions of temperature and moisture was not sufficient to induce ... See full document

... management systems occur slowly, and long-term studies are needed to assess soil ...objectives of this study were to evaluate the effects of soil management systems and liming ... See full document

... pH and P, indicating a higher spatial distribution discontinuity for the soil chemical attributes at higher ...function of fertilization in this layer, because this nutrient has a low ... See full document

... fall of 2003, from ...computer, and a GPS unit (GEOExplorer III, Trimble Navigation Limited, Sunnyvale, CA, USA) to locate the selected sampling ...southwest of the area. A total of 46 samples ... See full document

... Soil tillage by disk plowing followed by disk harrowing as well as the sowing procedure, both in the CT plot, resulted in changes in soil CO 2 -C ...increase of around 40 % after the last tillage ... See full document

... to systems of linear equations Ax = b, where A, b are known matrices and x is a vector of ...unknowns. Systems of linear equations play a prominent role in economics, ... See full document

... areas of the Serra do Mar and Serra da Man- tiqueira regions in southeastern Brazil, as observed by Simas et ...formation of gibbsite in the soils seems to follow a pattern consistent with not very ... See full document