Research

Read how subsoil amelioration improves your soil and crop yields by downloading the papers below.

Chapter Six – Ameliorating dense clay subsoils to increase the yield of rain-fed crops

The yield of rain-fed crops needs to increase to meet the requirements of a growing human population. One way to achieve this is to store more rain in the root zone of soils and increase its use by crops.
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Plant roots and deep-banded nutrient-rich amendments influence aggregation and dispersion in a dispersive clay subsoil

The ameliorating effect of deep banding of nutrient-rich organic amendments, termed subsoil manuring, on improving physical structure of sodic high-clay subsoils, has been often attributed to organic amendments per se.
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Understanding the amelioration processes of the subsoil application of
amendments

A series of field and incubation experiments were conducted to address the amelioration process of physicochemical constraints of alkaline sodic dispersive subsoils
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Deep Ripping Fact Sheet

Deep tillage can ameliorate layers of high soil strength and allow roots to access subsoil water and nutrients. Major crop yield responses to deep ripping lasting three years or more have been recorded on sandy soils in the northern region.
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Crop & Pasture Science, 2019, 70, 44–54

Subsoil manuring is a practice that involves placing high rates of poultry litter in bands at the base of rip-lines that extend down into the subsoil to a depth of 30-40 cm, in order to ameliorate poorly-structured, clay subsoils.
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Tavakkoli Ehsan February-2022

Amelioration of hostile subsoils via incorporation of organic and inorganic amendments and subsequent changes in soil properties, crop water use and improved yield, in a medium rainfall zone of south-eastern Australia…

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Amelioration Using Organic Amendments

Amelioration of dense sodic subsoil using organic amendments increases wheat yield more than using gypsum in a high rainfall zone of southern Australia…

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Armstrong Roger subsoil amelioration on clay soils in south eastern Australia

Subsoil amelioration on clay soils in south-eastern Australia: where will it succeed?…

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Southern Cross University Cross Connect

Ameliorating alkaline dispersive subsoils with organic amendments: Are productivity responses due to nutrition or improved soil structure?…

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What Is Subsoil Amelioration

Sub-soil amelioration using composts in cropping and grazing systems in Victoria…

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SSM Thesis Submission

Economic analysis of ameliorating subsoil constraints using subsoil manure in a cropping system…

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Subsoil Amelioration Fact Sheet 29-4-24

Many farmers in the High Rainfall Zone of Victoria have made great progress in addressing topsoil constraints, however crop yields have plateaued. It is believed that subsoil constraints are the reason for not achieving maximum yield potential…

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