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soil organism

Catalogue: GRDC Publications
Soil organic carbon makes up about 58 per cent of the mass of organic matter and is usually reported in a soil analysis report as the concentration (i.e. per cent) of organic carbon in soil (see Chapter 1 for more detail)... If a soil has a significant amount of gravel or stone material, this fraction is removed before analysis with the final soil carbon or nutrient assessment being only representative of the mineral component of the remaining soil... Understanding how organic matter cycles through the soil and what drives its accumulation and loss is critical to maintaining it at optimal levels within agricultural systems...
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Catalogue: Nuffield Scholar Reports
The practice of adding biochar to the soil to enhance the soils agricultural value has been undertaken for over two thousand years... Some early studies into the value of biochar as a soil additive suffered due to a lack of knowledge regarding the varying outcomes of the pyrolysis process or potential function of biochar in the soil... With the influence of previous worldwide agricultural practices having left some soils depleted and exposed to risk of loss through erosion and the forecast increases needed in food production, there is a great need on these soils for regenerative agricultural practices to rebuild their productive capacity...
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Catalogue: GRDC Updates (North)
Quirindi Grains Research Update Nutrition on black soil.. Grains Research Update - Quirindi August 2002 there is drought prior to flowering and a low number of kernels are set then the kernels which are produced will tend to be larger... In summary controlled traffic and conservation tillage will assist in protecting the surface of the soil and will maximise the activity of soil animals, increasing the infiltration and the water holding capacity of the soil...
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Catalogue: GRDC Updates (South)
Quirindi Grains Research Update Nutrition on black soil.. Grains Research Update - Quirindi August 2002 there is drought prior to flowering and a low number of kernels are set then the kernels which are produced will tend to be larger... In summary controlled traffic and conservation tillage will assist in protecting the surface of the soil and will maximise the activity of soil animals, increasing the infiltration and the water holding capacity of the soil...
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Catalogue: Nuffield Scholar Reports
Investigation of Zero-Till Farming Systems (ZT) in high rainfall cropping zones (HRZ), and its impact on soil biology and nutrient cycling.. Over time the farmer can achieve an increase in yields, with a decrease in some inputs such as fertiliser and chemicals... The other problem is that when soil is cultivated respiration and oxidisation occurs and lot of valuable plant nutrients are burnt off and not be available later when the plant needs them as discussed earlier...
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Catalogue: GRDC Research Summaries
Experimentation will focus on molecular techniques to understand the activity of soil microbial communities in releasing nutrients, coupled with detailed measures of soil nutrient cycling... Molecular techniques to understand the soil microbial communities role in nutrient release will be applied to field experiments to determine whether these soil biological processes can be manipulated through agronomic management to improve the prediction of nutrient cycling and crop productivity... Information from both outputs will be used to evaluate whether the presence and activity of these soil biological communities can be modified by different agricultural practices...
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Catalogue: Broadacre Field Crops DAFF QLD
Red and blue beetles have shiny red and blue bands across the body with a dark head.. In rice crops, adults have been found to feed on pollen anthers and stamens and are sometimes referred to as pollen beetles... Adults are 5 mm long with shiny red and blue bands across the body and a dark head, legs and antennae...
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Catalogue: Broadacre Field Crops DAFF QLD
Red and blue beetles have shiny red and blue bands across the body with a dark head.. In rice crops, adults have been found to feed on pollen anthers and stamens and are sometimes referred to as pollen beetles... Adults are 5 mm long with shiny red and blue bands across the body and a dark head, legs and antennae...
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Catalogue: Broadacre Field Crops DAFF QLD
Red and blue beetles have shiny red and blue bands across the body with a dark head.. In rice crops, adults have been found to feed on pollen anthers and stamens and are sometimes referred to as pollen beetles... Adults are 5 mm long with shiny red and blue bands across the body and a dark head, legs and antennae...
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Catalogue: GRDC Updates
Crop residues are one of the major sources of carbon for soil biota in low fertility agricultural soils of Southern Australia and stubble retention can provide benefits through changes in soil physical, chemical and biological properties... It is generally believed that stubble retention can provide benefits from improvements to different biological properties (Table 2)... Conservation farming practices offer potential to increase the supply of nitrogen to crops by modifying the composition of different soil pools of C and N and the nature of microbial activities that mediate the N cycling processes...
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