Soil Improvement trials Application Method,Form,Method,Rate,Soil Improvement,Timing,Type

The aim of this investigation was to use the cropping systems simulator APSIM to assess the impact of high levels of sodicity chlorine, electrical conductivity and boron on the growth and yield of a wheat crop (cv. Yitpi) grown in the BCG Systems Trial.

To produce an Endnote-generated txt file database of research on trace elements in cropping systems of south eastern Australia.

To provide information for the growing farmer interest in subsoil manuring during the year with data and information on demonstration trials on subsoil manuring on heavy clay and duplex soils where the plant available water capacity at depth is restricted by low porosity, water extraction and root growth.

The objective of the project was to work with landholders in the region to increase their capacity and knowledge to productively and sustainably manage their soil by developing a snapshot of the extent of acidity on their properties.

To improve our understanding of what is driving these responses and how soil modification techniques can be improved on sandy profiles.

To provide a demonstration site to observe the effects of mouldboard ploughing vs. no cultivation on non-wetting soils and crop growth and yield.

• To determine if the addition of lime and its method of incorporation (none/control, MBP or deep rip) has an effect on the soil pH profile and crop productivity.
• To compare the impact of mouldboard ploughing and deep ripping on topsoil water repellence compared to an untreated control.

To investigate the benefits of Kelpak, seaweed extract containing high concentrations of auxin, a plant growth hormone.

To:

• determine if physical intervention and soil mixing improved grain yield on a sandy soil on eastern EP,
• compare deep ripping with inclusion plates to spading,
• determine if deeper ripping improved results, and
• identify if the addition of fertilisers or organic material (OM) provide additional benefits.

To investigate the effect of deep ripping and gypsum on root and plant growth of wheat, canola and lentils.

Two experiments were conducted as a follow-up to previous SFS trials, to test whether deep ripping with various organic amendments could lead to water storage deep in the soil profile and therefore extra water provision during grain fill.

Experiments were conducted on two different soil types to test if (a) amelioration of these subsoils with a mix of gypsum and organic peat would increase the ability of the soil to hold more ‘plant available’ water and (b) if this extra water availability, would assist crops to achieve a better yield.

To investigate amelioration options for sands that have low water holding capacity, low organic matter, low nutrient availability, compaction, non wetting and high risk for wind erosion.

To investigate amelioration of subsoil acidity through topdressing higher rates of lime and combining lime with gypsum.

A three year deep ripping experiment was conducted on a highly acidic soil to test how effective a range of inorganic soil amendments were to ameliorate subsoil acidity and improve crop growth and yield. A novel product, MgSi (a blend of 70% Doonba dunite and 30% F70 superfine lime), was tested in the field for the first time.

To assess amelioration options for water repellent sandplain soils.

To assess amelioration options for water repellent sandplain soils.

To trial a range of non-wetting treatments on non-wetting forest gravel soils in the south west, in a high rainfall area, to determine which, if any, will increase water penetration and what soil characteristics have altered as a result of the treatment.

To assess the interaction between clay rate and incorporation methods to overcome soil water repellence and improve crop establishment and productivity.

To assess the impact of various levels of soil disturbance (cultivation methods) on water repellence and productivity and the interaction of these cultivation methods with soil amendments, lime and clay.

To assess what clay rich subsoil application rates are required for overcoming soil water repellence and how this interacts with method of incorporation.

To assess the impact of deep ripping on crop yield over a two year period in the To assess the impact of deep ripping on crop yield over a two year period in the eastern wheatbelt

To determine if inclusion of Bentonite clay improves crop yields on sandy soils.

To determine if the inclusion of Bentonite clay improves crop yields on non-wetting sandy soils and their ability to store more carbon.

Compare varying rates of N on wheat after applying BEST TM21 against a control area of no post nitrogen application.

The aim of this project is to improve the capacity of growers to identify and manage subsurface acidity on the Northern Yorke Peninsula. Soil testing and pH mapping for acidity has become common practice in the district. However, this sampling and mapping has focused on the top 0-10 cm of soil. Recent reports and preliminary work have confirmed an acidic band of soil is often occurring at the 5-15 cm depth and beyond in certain soil types.

There are two main components to this project:

• Spatially identifying subsurface acidity by validating the relationship between soil pH and EC (electrical conductivity).
• Develop best management practices for lime amelioration to manage subsurface acidity.

To assess water repellent soil amelioration options and to determine whether a one-way plough can be used to ameliorate non-wetting sand for much lower cost than mouldboard ploughing or rotary spading.

To determine the effectiveness of biochar on increasing soil carbon and soil stability.

To demonstrate if there are any benefits of applying biochar to increase crop and pasture production in the West Midlands

The trial purpose was to compare seed dressing and foliar application of Bioprime using granular and liquid fertilisers. 

Trials from over four years are examining different rates and timing of application of Bioprime, a liquid soil amendment which changes soil microbiology. The aim is to relate measured plant growth and yield improvement to changes in microbial populations in the soil around roots, and to show how these changes and different ways of applying nitrogen (N) impact on soil carbon accumulation.

The aim of this project is to investigate the use of biosolids to overcome subsoil constraints in the high and low rainfall zones in Victorian grain growing regions: in brief,

• investigate whether subsoil physicochemical constraints that limit root growth and reduce water and nutrient-use efficiency can be overcome by using subsoil amelioration with pelletised T1C2 grade biosolids 
• determine whether subsoil amelioration with biosolids will have any adverse effects on plant availability of heavy metals
• investigate whether microbial populations will be impacted from the application of biosolids into the subsoils
• determine whether biosolids as a subsoil ameliorant can have  any impacts on grain quality

To examine boosting pulse crop performance on acidic soils.

To investigate the bio-fumigation effects of canola dn mustard varieties on root disease and a number of crop varieties.

To assess the effectiveness of liquid calcium products on yeild in wheat.

To investigate the potential of using a modified delving operation, which rips the clay and allows topsoil/gravel to fall back into the clay slot, to create a subsurface drainage line through the clay and reduce waterlogging.

To answer the question: Can incorporation of lime speed up yield response?

To investigate whether kikuyu improve soil organic carbon levels on Kangaroo Island.

To determine which ameliorant practice is the most effective and economic in remediating subsoil acidity at depth.

To determine which ameliorant practice is the most effective and economic in remediating subsoil acidity at depth.

To determine which ameliorant practice is the most effective and economic in remediating subsoil acidity at depth.

To answer the question: can you affod to lime?

To test the effectiveness of various soil ameliorants in establishing irrigated canola

To demonstrate how soil inversion using a mouldbaord plough could be used to incorporate lime into acidic subsoil, overcome soil water repellance and control weeds and to measure its in=mpact and growth.

 The aim of these experiments is to examine how tillage intensity influences allocation and stabilisation (storage) of newly assimilated C in canola crop-soil and wheat crop-soil systems at Wagga Wagga and Condobolin.
 

The Upper North Farming systems group is involved in several Carbon Farming projects, which are trying to identify areas which have the greatest potential for soil carbon sequestration or reductions in greenhouse gas emissions.

To evaluate the impacts of the soil amelioration practices of deep ripping and organic matter inputs on the growth and production of lupin, lentil and chickpea grown on deep sandy soils in the Mallee.

To answer the question: choosing lime - what you need to know to make better decisions

To report on what you need to know to make better liming decisions.

To assess changes in crop productivity as a result of overcoming the chemical, physical and biological constraints of a sandy soil at Cadgee.