The urease activity in profiles of five great soil groups from northern New South Wales

1968 ◽  
Vol 28 (1) ◽  
pp. 25-37 ◽  
Author(s):  
Margaret G. Myers ◽  
J. W. McGarity
Keyword(s):  
Urease Activity ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Soil Groups

Corrigendum - Frequency of annual species of Medicago on the major soil groups of the Mcquarie region of New South Wales

1960 ◽  
Vol 11 (5) ◽  
pp. 705
Author(s):  
WD Andrew ◽  
FW Hely
Keyword(s):  
New South ◽  
New South Wales ◽  
Salt Content ◽  
Acid Group ◽  
Soluble Salt ◽  
Annual Species ◽  
South Wales ◽  
Soil Groups ◽  
Soil Habitat ◽  
Poor Drainage

The frequency of eight annual species of Medicago was determined on 10 soil groups in a region climatically favourable for medics. They occurred on nine of these, the overall frequency being in the order M. minima (L.) Bart. > M. denticulata Willd. > M. laciniata (L.) Mill., M. praecox DC., M. tribuloides Desr., and M. orbicularis (L.) Bart. > M. arabica (L.) Huds. and M. confinis Koch. M. minima was more tolerant of variation of soil habitat than any other medic in the region. M. denticulata was most commonly found on the soils of high soluble salt content and showed the greatest tolerance of poor drainage conditions. M. laciniata occurred in greatest abundance on soils of the well-drained brown acid group. M. praecox was most commonly found on soils with a compact gravelly surface. M. tribuloides was recorded on five soil groups but was common only on the black earths. M. orbicularis was confined to the black earth and red loam soils. M. arabica was rarely found, being restricted to lower, fertile, well-drained parts of the landscape, and M. confinis occurred only occasionally and then in association with M. denticulata.

Frequency of annual species of Medicago on the major soil groups of the Mcquarie region of New South Wales

1960 ◽  
Vol 11 (5) ◽  
pp. 705
Author(s):  
WD Andrew ◽  
FW Hely
Keyword(s):  
New South ◽  
New South Wales ◽  
Salt Content ◽  
Acid Group ◽  
Soluble Salt ◽  
Annual Species ◽  
South Wales ◽  
Soil Groups ◽  
Soil Habitat ◽  
Poor Drainage

The frequency of eight annual species of Medicago was determined on 10 soil groups in a region climatically favourable for medics. They occurred on nine of these, the overall frequency being in the order M. minima (L.) Bart. > M. denticulata Willd. > M. laciniata (L.) Mill., M. praecox DC., M. tribuloides Desr., and M. orbicularis (L.) Bart. > M. arabica (L.) Huds. and M. confinis Koch. M. minima was more tolerant of variation of soil habitat than any other medic in the region. M. denticulata was most commonly found on the soils of high soluble salt content and showed the greatest tolerance of poor drainage conditions. M. laciniata occurred in greatest abundance on soils of the well-drained brown acid group. M. praecox was most commonly found on soils with a compact gravelly surface. M. tribuloides was recorded on five soil groups but was common only on the black earths. M. orbicularis was confined to the black earth and red loam soils. M. arabica was rarely found, being restricted to lower, fertile, well-drained parts of the landscape, and M. confinis occurred only occasionally and then in association with M. denticulata.

An interpretation of the occurrence of diverse types of soils on basalt in Northern NSW and Queensland.

1952 ◽  
Vol 3 (4) ◽  
pp. 391 ◽  
Author(s):  
LJH Teakle
Keyword(s):  
New South ◽  
New South Wales ◽  
Climatic Conditions ◽  
Group Status ◽  
Basalt Flow ◽  
High Rainfall ◽  
Soil Group ◽  
Red Soils ◽  
South Wales ◽  
Soil Groups

This study is confined to a consideration of the genesis of soil patterns formed on basalt in four districts in northern New South Wales and Queensland. The chief features of five distinct groups of soils — probably of great soil group status — recognized in these soil patterns are described. It is concluded that any interpretation based solely on the present climatic conditions is inadequate. It is submitted that, in the patterns described, the different soil groups represented commenced to form during different climatic eras, on a new basalt flow or on a new basalt surface exposed by erosion. In each case the newly initiated soil would be in conformity with the pedogenic environment of the era. For instance, under high rainfall the red soils would be initiated; under low rainfall the black soils would be expected to form. These soils tend to persist unless removed by erosion in spite of subsequent changes in the pedogenic environment. This points to the importance of the time factor in the form of past climatic eras and of geologic erosion in the development of these soil patterns. It is suggested that these pedogenic factors may be important in the development of many soil patterns.

A statistical-chemical characterization of four great soil groups in Southern New South Wales based on orthogonal polynomials

Soil Research ◽  
1970 ◽  
Vol 8 (3) ◽  
pp. 221 ◽  
Author(s):  
JD Colwell
Keyword(s):  
Orthogonal Polynomials ◽  
New South ◽  
New South Wales ◽  
Chemical Properties ◽  
Chemical Characterization ◽  
Soil Classification ◽  
Statistical Procedures ◽  
South Wales ◽  
The Mean ◽  
Soil Groups

Statistical procedures are described for the characterization and comparison of profiles within soil classification units. Profile trends in a measured characteristic are represented by the coefficients of orthogonal polynomials in depth, and these coefficients are used as observations for standard statistical procedures. The mean of the respective coefficients provides estimates of the mean profiles for the classification units, and the variance-covariance matrix of the coefficients can be used to calculate the confidence intervals of these means. Differences between the mean profiles can be tested by analyses of variance. The variability of a range of chemical properties in the profiles of four Great Soil Groups, viz. yellow podzolic, red earth, red-brown earth, and grey clay, is described. The characterization is based on the analysis of profiles sampled from areas of about 0.4 ha chosen to represent cultivated examples of the groups in southern New South Wales. Variability of most soil properties is greater between these areas than within them, notable exceptions being exchangeable calcium and magnesium within the grey clay Group. This high localized variability is attributed to the gilgaied nature of this group in this region. Also variation between the soil groups is generally greater than within the groups. The differences seem, however, of limited importance from the point of view of soil fertility.

A survey of urease activity in soils of Northern New South Wales

1967 ◽  
Vol 27 (2) ◽  
pp. 217-238 ◽  
Author(s):  
J. W. McGarity ◽  
Margaret G. Myers
Keyword(s):  
Urease Activity ◽  
New South ◽  
New South Wales ◽  
South Wales

Estimations of sampling intensities for the characterization of soil within experiment sites

1971 ◽  
Vol 11 (52) ◽  
pp. 541
Author(s):  
JD Colwell
Keyword(s):  
Soil Profile ◽  
Field Experiments ◽  
New South ◽  
New South Wales ◽  
Chemical Properties ◽  
Soil Core ◽  
Core Samples ◽  
South Wales ◽  
Soil Groups

Estimates are made of the desirable number of soil core samples that should be taken from the sites of field experiments for the estimation of profile trends in chemical properties for between site comparisons. The estimates are made on the basis of the magnitude of within site variance relative to between site variance. Fewer samples are required when between site variance is high than when it is low. The data were obtained from the sites of experiments representing four great soil groups in southern New South Wales. The desirable number of samples varies amongst the soil groups, with the chemical properties and with depth down the soil profile. Estimates for mean profile trends and for the means of individual depth strata were similar, It is concluded that at least 9 to 12 core samples should be taken per site and preferably 29 to 40 to ensure reasonably safe estimates of profile trends in important chemical properties.

Plants of New South Wales

2009 ◽  
Author(s):  
F. Von Mueller
Keyword(s):  
New South ◽  
New South Wales ◽  
South Wales

Notes and Sketches of New South Wales

2009 ◽  
Author(s):  
Louisa Anne Meredith
Keyword(s):  
New South ◽  
New South Wales ◽  
South Wales
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