2006) for the same Rhodic Paleudalf used in this study, the maximum bulk density in the Proctor test (1.
1966) and the equations obtained for the relationship between the degree of compactness and cone index, the critical resistance value for the Rhodic Paleudalf (92 g clay [kg.
The soil moisture contents in the field during the penetration resistance trials and in the samples equilibrated to the matric suction of 33 kPa (samples used for the compression curve and to calculate reference bulk density) were similar (Table 3), except for the average and minimum value of the Rhodic Paleudalf (92 g [kg.
After 12 years of no-tillage under crop rotation involving cover crops, the coefficient of variation of CS of a Rhodic Ferralsol was medium, with CS at 0-0.
Machado PLOA, Sohi SP, Gaunt JL (2003) Effect of no-tillage on turnover of organic matter in a Rhodic Ferralsol.
The clay content of the Typic Kanduidox (>45%), which is slight higher than that of Rhodic Kandiudult (<40), might be the reason of the organic matter accumulation in this soil, since soil clay particles protect SOM from decomposition and allow SOM accumulation (Jones 1973; Van Veen and Kuikman 1990; Koutika et al.
Therefore, based on POM status, especially on tPOM-N in soil N, the studied soils can be ranked in order of descending quality as follows: Typic Kandiudox > Rhodic Kandiudult [greater than or equal to] Typic Kandiudult.
When these 3 variable charge soils were compared, the increment of Zn(II) adsorption induced by arsenate followed the order Hyper-Rhodic Ferralsol > Rhodic Ferralsol > Haplic Acrisol.
The results indicate that Zn(II) adsorption in the Hyper-Rhodic Ferralsol was more affected by arsenate than that in the Rhodic Ferralsol, while adsorption was less affected by arsenate in the Haplic Acrisol than the Rhodic Ferralsol.
1997), and locally they fall into 3 series, FF 135 and RC 135--Pin Gin (Humic Rhodic
Hapludox; formed in situ on basalt), PB140--Mundoo (Humic Rhodic
Hapludox; formed on basaltic alluvial fans), and CO139--Innisfail (Oxic Dystrudepts; formed on mixed alluvium) (Murtha 1986; Gillman and Able 1987; Soil Survey Staff 1998).
1997), and locally they fall into 3 series, Pin Gin (Humic Rhodic
Hapludox; formed in situ on basalt; profiles FF135 and RC135), Mundoo (Humic Rhodic
Hapludox; formed on basaltic alluvial fans; profile PB140), and Innisfail (Oxic Dystrudepts; formed on mixed alluvium; profile CO139) (Murtha 1986; Gillman and Able 1987; Anon.
The soil, classified as a Rhodic
Kandiudalf with 43% clay, 24% sand, and 33% silt (Reichardt and Timm 2004), was considered homogeneous in relation to mechanical analysis, fertility, and agricultural production potential.