Showing posts with label soils. Show all posts
Showing posts with label soils. Show all posts

Thursday, 19 September 2013

PRA: Case Study, Changes for expediency

Case study Xstrata Wandoan coal mine lease application; Queensland Coordinator-General, November 2010, reclassification of land types for the advantage of the mining company.

Prepared by Property Rights Australia


Image sourced from Xstrata EIS. The mining lease area covered approximately 30,000 ha with 70 land titles belonging to 42 owners. Each little pink square represents a farming family to be removed, which they nearly all were, for the mine to proceed.  


Agricultural land in Queensland has been classified using the simple classification system called Good Quality Agricultural Land (GQAL)[i] of A, B, C and D class soils.
Class A is top cropping country
Class B is land suitable for cropping and grazing
Class C is grazing only; unsuitable for cropping;
and D is unsuitable for agriculture or reserved for environmental purposes.

This land classification system was developed from decades of work by soil scientists who were unimpeded from any other agenda other than good science. QGAL is clearly defined; it has been used as standard in resolving matters in the courts. It has stood the test of time. 

Property Rights Australia (PRA) is very concerned where policy, legislation, planning schemes and ministerial decisions have been implemented without giving priority to good soil science.  

A very blatant example in recent years is where the Coordinator-General’s department in November 2010 reclassified lands in the Xstrata Wandoan coal mine lease application from A & B to C for the advantage of the mining company. This project was subsequently granted conditional environmental approval in March 2011.
 
It is important to review what occurred at that time not only to be vigilant in ensuring it doesn't happen again but also to facilitate improved outcomes in future policy and legislation. Throughout 2013 the Qld government has been making changes to many planning laws, the latest being the Darling Downs Regional Plan which makes mention of the Xstrata Wandoan coal mine project on page 17.[ii] 

With any mining or petroleum lease application, a resource company is required to produce an environmental impact statement (EIS)[iii] where a consultancy firm is hired to write a document (best measured in kilograms rather than pages) to shed the best possible light on the project proceeding. The Xstrata Wandoan coal mine addressed quality of soils in the lease application in volume 1, chapter 9.3.6 and land suitability and agricultural lands in chapter 9.3.7.[iv]  

Despite including the pre-existing GQAL mapping as Figure 9-11-V1.3, the EIS provides inconsistent mapping of soil quality in Figure 9-9-V1.3. The EIS states that this second map uses the classification system of Land Suitability Classification for Cropping and Grazing in the Semi-arid Sub-tropics of Queensland (Department of Mines and Energy, 1995). The result is that under GQAL the land was considered to be either, Class A, top cropping country or B, land suitable for cropping and grazing and in the classification system favoured by Xstrata the very same land overnight became either
  • Class 3 – suitable land with moderate limitations; land which is moderately suited to a proposed use but which requires significant inputs to ensure sustainable use; or
  • Class 4 – marginal land with severe limitations which make it doubtful whether the inputs required to achieve and maintain production outweigh the benefits in the long term.  

The accuracy of the information and the methodology used to reach the conclusions in the relevant chapters within the EIS is questionable and was challenged by those with local knowledge. In response to these submissions the Supplementary EIS (SEIS)[v] spent many pages justifying the obvious anomalies without varying its conclusions. 

The most disappointing aspect about Xstrata Wandoan coal mining lease application was not the information paid for by Xstrata and prepared by consultants but the almost unreserved acceptance of this material in the Coordinator-General’s evaluation report on the EIS.[vi]

In Chapter 5.2.1 - Good quality agricultural land, strategic cropping land and rehabilitation, the Coordinator-General makes the following statements 

The EIS outlined that, under Section 2 and Attachment 2 of the associated SPP 1/92 Planning Guidelines: The Identification of Good Quality Agricultural Land (Department of Primary Industries and Department of Housing, Local Government and Planning Queensland 1993), Class A, B and C agricultural land in the former

Taroom Shire does comprise GQAL [emphasis added] 

The Taroom Shire Planning Scheme classified the MLA areas as GQAL—Classes A, B and C. The land suitability assessment undertaken in the EIS and SEIS, however, concluded that Class 3 and Class 4 land suitability—which approximates to GQAL Agricultural Land Class C—occurred on the MLA areas. Therefore, indications are that the MLA areas are unlikely to be classified as strategic cropping land.  

It beggars belief that the Coordinator-General could accept without question the downgrading of this land classification by the party with an economic interest in having it downgraded, without considering the possible cost to Queensland agriculture and the past production history of that land. 

PRA strongly believes land classifications must be based on established science and the production history of that land. No benefit to the immediate community or the citizens of Queensland can be identified in altering soil classifications for the expediency of the resource sector, as in the Xstrata Wandoan coal mine where A and B GQAL was changed to C class. Nor should it be the case where a process could be influenced so as C and D class land could be changed to A and B to stop a resource project.
 


 
 
 

Friday, 12 July 2013

The good earth series

by Robert Edis, Soil Scientist at University of Melbourne
 
Cross post under The Conversation Republishing guidelines.  
 
Australia has some of the world’s most ancient soils, many of which grow delicious produce. In this series, “The good earth”, soil scientist Robert Edis profiles some of those soils and the flavours they bring.

The good earth: peaty Black Vertosol and asparagus

The soil that grows the best asparagus in the world is the peaty Black Vertosol, in the Koo-Wee-Rup district 60km south-east of Melbourne. The most famous of these soils is the Dalmore clay – peaty phase. Many places renowned for their geo-culinary perfection are a happy mix of climate and soil factors. But in this case, it’s all about the soil.
 
Vertosols are those big black clayey soils – in this case more than 60% clay – that swell when wet and shrink and crack when drying out
 
All plants grow well in this soil and are full of flavour and nutrition. But with asparagus, very special magical things happen as the spear of the asparagus pushes through the soil to emerge at the surface for harvest. The absence of sand grains, the slipperiness of the fine clay particles (less than a thousandth of mm across) and the soft buoyancy from the peat and self-mulching mean the asparagus spear slides through the soil like a wet tongue through fairy floss. The resulting spear has the softest skin and most flavour of any, and is most prized by asparagus connoisseurs throughout the world.
READ MORE [CLICK HERE]
 


The good earth: Jasmine rice and Leeton Red Sodosol

In the 1980s, it took around 3000 litres of water to grow one kilogram of rice in the Murrumbidgee Irrigation Area, NSW. Now it takes about a third of that. A big part of this reduction is thanks to the use of Sodosol soils.
Premium, fragrant Jasmine rice production around Leeton is made possible by flat topography, access to water, and, most importantly, Red Sodosols.

If Ferrosols are the Kylie Minogue of soil types, Sodosols are the Eddie McGuire. They’re in loads of places, can be annoying from time to time, and aren’t that attractive. They are sometimes described as tractor-bogging, gumboot-sucking spew (Sodosols, not Eddie).

When the soil dries it sets hard like a brick; it’s impermeable.
This impermeability makes Sodosols problematic for almost everyone. But for Leeton rice growers these soils are great. The topsoils are quite fertile, but the subsoil is highly sodic. The sodic subsoil stops water leaking from the paddy while it’s flooded. It also stops the water table rising, which would otherwise cause salinity. The less clayey and sodic topsoil, compared to most rice paddy soils, ensures production of fully matured grains, jammed pack full of flavour, nutrition and aroma.
READ MORE [CLICK HERE]



The good earth: Green lentils and the Wimmera self-mulching Grey Vertosol 

Xcr2bq7k-1371708199Puy Lentils are little edible emeralds; their growers call them the “caviar of vegetables”.
Notwithstanding full respect and homage to the artisan cultivators of Le Puy, one cannot ignore the Wimmera, where the self-mulching Grey Vertosol soil steps up to the plate to produce Australia’s version of these premium green lentils.
 
Like all legumes, lentils provide their own nitrogen and even leave some in the soil, thanks to symbiotic nitrogen fixation. Bacteria live in nodules of the roots of legumes. These bacteria are able to take nitrogen from the air and convert it into a form usable by both the bacteria and the plant. This reduces the amount of fertiliser needed, for both for the lentils, and for wheat or canola planted afterwards
READ MORE [CLICK HERE]
 

The good earth – King Island cheese and Currie Yellow Kurosol

Milk is very strongly and immediately influenced by what the milk producer eats. Those who remember fresh fresh cows' milk will testify to the seasonality of milk flavour, the way it changes with pasture composition.
 
The geology of King Island, central to the story of agriculture, is dominated by the very old (Precambrian, at more than 541 million years old) and the very young (less than around 10,000 years old). The old rocks, many of them igneous, are the parent material for the best pasture soils on the island – Yellow Kurosols.
 
Cheese is a great integrator of Planet Earth, and everything has to be just right. The flavour and texture components are drawn from the hands of the cheese-maker and the micro-organisms they garden, the cattle and the grass they eat, the atmosphere and water these all share, and on King Island, a Yellow Kurosol. It’s a biome on a biscuit!
READ MORE [CLICK MORE]

 

The good earth: Kensington Pride mangoes and the Darwin lateritic Red Kandosol

Mpc2mshv-1372920563The earliest mangoes in Australia are Kensington Pride from the Darwin lateritic Red Kandosol starting in September.
The soils of the top end are pretty infertile, as David Adamson pointed out last week, as did Bruce Davidson last century and several folk in between. But this is sol de rigueur for mangoes. Few soils that are not rock are lousier than lateritic Red Kandosols.
The evolution of mangoes is in the deeply weathered and depleted slopes of South Asia, many with a laterite layer. It’s not so much that they don’t like deep fertile soils, its just they go a bit wild, with irregular flowering and excessive growth leading to unreliable fruit set and reduced quality, particularly in Kensington Pride. Not to mention big and hard to manage trees. This is not a problem on lateritic Red Kandosols!
READ MORE [CLICK HERE]

 

The good earth: Buderim Red Ferrosol and ginger

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As well as being attractive, Red Ferrosol soils produce many of Australia’s iconic foodstuffs.
One is ginger from Buderim on Queensland’s Sunshine Coast. Credited with curing everything from flatulence to nausea, ginger would be more a medicine than a food if it did not taste so delicious. The zing from ginger (it is after all in the genus Zingiber) comes from the volatile oils in the rhizome.
There is a strong regionality of ginger flavour and aroma, with the degree of pungency and lemony-ness controlled by the balance of the oils. This balance depends on the growing conditions – weather, management and, of course, soil
READ MORE [CLICK HERE]
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