trials

To assess amelioration options for water repellent sandplain soils.

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.

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

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 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 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.

To demonstrate what clay rate is required for claying to be successful and to look at how this is affected by the degree of clay incorporation.

To compare different clay spreading and tillage methods for the amelioration of water repellent gravel soils.

To compare different clay spreading and tillage methods for the amelioration of water repellent gravel soils.

To compare different clay spreading and tillage methods for the amelioration of water repellent soils.

To assess the impact of the rate of application of clay-rich subsoil to water repellent sand on grain yield and the interaction with incorporation method.

To determine whether crop establishment and grain yield gains from claying can be further improved by matching the clay rich subsoil application rate with the incorporation method.

To assess amelioration of subsoil acidity using a range of tillage methods for incorporating surface applied lime into acidic subsoils and the impacts of tillage and lime on crop productivity.

To assess amelioration of subsoil acidity using a range of tillage methods for incorporating surface applied lime into acidic subsoils and the impacts of tillage and lime on crop productivity.

To characterize the effect of various depths of ripping on crop performance.

To test modified one-way ploughs as a method of lime incorporation.

To investigate the influence of rate, application timing and soil type of the activity of Lure H20 as a pre-sow soil wetting agent in the cropping phase.

To evaluate a range of seeding modifications or additions with the aim of improving crop establishment and yield on water repellent sandplain soil.

Assess the value of several traits that aim to improve the acid-soil tolerance of wheat under field conditions.

To further investigate rotary spading and other soil amelioration techniques on the yellow sand-plain soils west of Moora.

To measure the impact on crop productivity of combinations of lime and mouldboard ploughing on acidic deep yellow sand.

To investigate rotary spading and other soil amelioration techniques on yellow sandplain soils west of Moora.

To determine how mouldboard ploughing (soil inversion), rotary spading and banded wetting agent affect the availability of soil nutrients.

To assess the impact of different seeding systems on crop establishment in water repellent soil.

To improve the adoption of liming practices in the medium to high rainfall zone of Western Australia by demonstrating the economic and environmental benefits of lime application and incorporation.

To determine how soil inversion and banded surfactants change the availability of soil nutrients.

To assess the impact of mouldboard ploughing and clay spreading on soil water repellence and grain yield.

To look at the interaction of lime rate and cultivation in changing subsoil pH. 

To improve understanding of the range of tillage implements and techniques available to incorporate lime into acidic soils, their respective costs and benefits.

To identify suitable options for managing soil water repellence on sandy gravels.

Detailed measurement of soil properties and plant productivity over time following amelioration with one-off deep tillage.

To test increasing the economic viability of deep ripping using controlled traffic and the addition of topsoil and ameliorants to the subsoil.

This paper aims to summarise the grain yield response and weed control achieved by a one-off soil inversion.

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.

Assessing practical soil management options for overcoming severe water repellence on sandy gravels in the West Midlands.

To assess amelioration options for water repellent soil 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.

Deep placement of organic matter and impact on lupin establishment.

This trial was established 2006 to :

• demonstrate responses to Super Phos, potash and lime in pasture and the benefits to the following crop, and
• to demonstrate the benefits of pasture manipulation and intake in furrow to the following crop.

This report records the use of polyacrylamides (PAMs) and soil wetting agents in Badgingarra.

To assess the impact of full inversion mouldboard ploughing and partial inversion rotary spading on soil repellance, crop growth and grain yield using large scale on-farm trials.

To determine whether adjustments need to be made to a range of decision support systems (DSSs) to quantitatively account for the effect of gravel on inputs such as fertilisers, lime, pesticides and herbicides.

To examine the pasture productivity and economic response to the application and incorporation of low rates of clay to pale deep sandplain over three years.

To look at the following soil amelioration treatments on water repellent pale sand:

• no amendment (nil);
• 3t/ha limesand; and
• 150 t/ha clay rich (31% clay) subsoil spread with a multi-spreader

To determine how lime, nutrients or other amendments are distributed through the soil after applicaiton with different mixing methods.

To assess the whole farm implementation of water repellence management strategies.

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.