| Type | Name | Date | Summary |
 | Acidity and alkalinity, Chapter 9 in the Farm Monitoring Handbook (Hunt, N. and Gilkes, B.) | 1992 | Comprehensive information on why and how acidity and alkalinity occurs, susceptible soils and sites, monitoring, management, and equipment. |
| Soil acidity. In: Soil Guide - a handbook for understanding and managing agricultural soils. (Moore, G., Dolling, P., Porter, B. and Leonard, L.) | 1998 | Soil acidity is the greatest threat to the sustainability of WA’s agricultural production. Soils are becoming more acidic as a consequence of increasingly productive agriculture, (e.g. product removal, legume rotations and the use of nitrogenous fertilisers). Soil Acidity is a measure of how many active hydrogen (H+) ions there are in the soil. It is rated on a pH scale. The pH scale ranges from 1 to 14. A pH of 7 is neutral, above 7 is alkaline and below 7 is acidic. Decreasing acidity significantly reduces the availability of Nitrogen, phosphorous, Calcium, Magnesium and Molybdenum. |
| Subsurface acidity (Bolland, M., Gazey, C., Miller, A., Gartner, D. and Roche, J.) | 2004 | Subsurface acidity is a major cause of decreased grain production in most WA soils and is amended by adding sufficient lime to the topsoil to raise the pH of the topsoil to 5.5 or greater. This publication outlines the causes of soil acidity, measuring soil pH and methods to ameliorate topsoil and subsurface acidity. |
| Diagnosing and ameliorating problem soils (Patabendige, D.) | 2005 | A visual key and decision tree for diagnosing and ameliorating problem soils focusing on cropping land use in the agricultural region of Western Australia. Issues addressed include non-wetting (water repellent) soils, waterlogging, soil pH (acid or sodic soils), hardsetting soils, root growth restrictions, |
 | Lime and Nutrient Balance Calculator (GRDC) | 2003 | Lime and Nutrient Balance (LNB) is a computer software package that calculates the lime required to achieve a target soil pH and the requirement of nitrogen and phosphorus to achieve target yields. A separate nutrient budget indicates whether fertiliser additions over a 10 year crop and pasture sequence are sufficient to maintain the nutrient status of the soil. The software requires inputs to describe a particular crop or pasture, soil type, soil-test information, fertiliser type and amount. It takes account of the nutrients removed in product, leaching losses and soil fixation. It uses monthly weather records supplied with the package and/or actual monthly rainfall supplied by the user. The LNB has been designed for farmers or advisors who wish to gain a quick estimate of the lime and P requirements of cropping and pasture systems and the N requirements of cereal and canola cropping systems. |
| Earthworms in wheatbelt farms (Parlevliet, G.J.) | 1997 | Earthworms and other soil animals, such as ants, millipedes and termites help develop soil structure and porosity, mix nutrients and break down organic matter. Only two earthworms have been identified under native vegetation, whereas ands and termites are widespread. The consensus is that termites, ants and spiders play a larger part in developing our soils than do earthworms. However, introduced species of earthworms are more important in soils cleared for agriculture. |
| Earthworms, Chapter 11 in the Farm Monitoring Handbook (Hunt, N. and Gilkes, B.) | 1992 | Comprehensive information on knowing the earthworms in your soil including benefits of earthworms and monitoring. |
| Managing soils to keep them healthy and productive (Meat and Livestock Australia) | 2002 | Soil organisms play an important role in degrading organic matter, releasing nutrients back to the soil and enhancing soil structure for productive pasture species. Management of the grazing system in the paddock impacts on soil organisms at ground level and below. |
| Multiple benefits from organic matter (Fisher, P.) | 2006 | Research has found that rotations that increase the amount of organic matter in the soil boost soil carbon levels and microbial activity, resulting in improved soil structure and biologically healthier soils. |
 | Soils are Alive website extract (Abbott, L. and Slater, J.) | 2006 | This website extract provides background information relevant to soil health and the sustainable use of land for agriculture, horticulture and other practices, including forestry. The information emphasises the biological processes in soil. Website: http://www.soilhealth.segs.uwa.edu.au |
| MLA Stocking Rate Calculator (Meat and Livestock Australia) | 2005 | Calculator for determining stocking rates of cattle based on pasture cover and pasture growth rate. |