Soil health and nutrient management

Permanent URI for this collectionhttp://elibrary2.sugarresearch.com.au/handle/11079/13842

Research outcomes: Soil health is improved with a resulting positive impact on the environment and yield growth. Improved reputation and relationship between industry and environmental groups.

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1981 - 198911990 - 19983

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End date: 1999Subject: search.filters.subject.Water quality

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    Sugar Research and Development Corporation final report Project CTA013 Spatial analysis of the impact of land use on nutrient loads within the Herbert River Catchment
    (1998) Johnson, A; Walker, D; Wood, A
    This Project arose out of concerns for the apparent increase in nutrient and sediment contaminant loads in Queensland coastal waters since European settlement (e.g. DEAP Report, 1992). At the time of Project inception, the origins of this increase had yet to be defined and quantified, however, the sugarcane industry was considered to be a likely contributor because of the large (and increasing) areas of sugarcane involved and the relatively high fertiliser inputs per unit area. There was, therefore, a need to develop practical tools to integrate existing information and spatially model, at the catchment scale, nutrient and sediment losses from agricultural land. It was the Project teams’ intention to provide tools to analyse important issues/questions relating to the sustainable management of existing and potential sugarcane lands of the Herbert River catchment. In response, four core areas of R&D were undertaken. These were: 1. Data collection and integration; 2. Spatial analysis of the impacts of land use and management practices on water quality; 3. Tools for decision support; and 4. Building stakeholder capacity.
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    Progress report on BSES and WRC studies of water quality in Woongarra-Pemberton area - July 1981
    (1981)
    This report summarizes results of a pot trial comparing bore and surface water; co-operative monitoring of water-table levels with the Water Resources Commission; field trials with various ameliorants; and a field survey of yields and various management factors in the problem area and other neighbouring areas.
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    The physiological and growth response of sugarcane to the sodium absorption ratio in flowing solution sand culture
    (1994) Crema, AT
    The growth of sugarcane variety Q117 in sand culture using nutrient solutions with sodium absorption ratios of 0, 5, 10, 15, 20 and 30, each with a constant electrical conductivity of 1.5 dS/m was determined under glasshouse conditions. Increasing the SAR of nutrient solutions from 0 to 30 while holding EC and ionic strength constant, was found to have no significant effect on sugarcane grown in coarse sand for 12 weeks. Thus, sugarcane growth was not inhibited by Na+ concentrations up to 12 mM when Ca2+ and mg2+ were each present at 76uM. It can be tentatively concluded from these results that increasing levels of sodium, in the absence of high levels of soluble salts are not toxic to the variety Q117, as long as other major cations are present at concentrations uninhibitative to plant growth. The major growth effect on sugarcane of sodic soils occurs as a result of the physical limitations associated with soil structure deterioration.
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    Development of criteria for draining shallow watertables in the Isis irrigation area
    (1993) Kingston, G
    This project was proposed to the Sugar Research Council because qualitative data suggested a significant problem with waterlogging and salinity in hydromorphic sedimentary soils in the Bundaberg to Maryborough region. Also there were no quantitative data to indicate elevation of watertables in areas of hazard, nor were there any criteria to determine an approach to management of shallow watertables in the region.