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soil community

Catalogue: GRDC Factsheets
There is a renewed interest in the value of livestock as a risk management tool in the wake of escalating crop input costs, climate variability and fluctuating commodity prices... Negative impacts of livestock on soil structure and surface cover must be balanced against consumer demands and constraints of no-till cropping, including weed control issues, lack of soil cover and disease... Integration of livestock in no-till systems - possible pros and cons advantages: non-chemical control of pests including herbicide-resistant weeds; increased biodiversity in plant and soil communities; higher soil organic carbon levels; more available nutrients (nitrogen); and use of excess crop residues and failed crops...
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Catalogue: Ground Cover
Soil secrets to suppress disease.. Associate Professor Pauline Mele from La Trobe University looks for the soil microorganisms that suppress disease in grain crops... A team of 90 researchers working on 15 projects aim to increase yields and reduce input costs in soils across the high-rainfall zone (HRZ) as part of the GRDC's Soil Biology Initiative...
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Catalogue: Ground Cover
Associate Professor Pauline Mele from La Trobe University looks for the soil microorganisms that suppress disease in grain crops... A team of 90 researchers working on 15 projects aim to increase yields and reduce input costs in soils across the high-rainfall zone (HRZ) as part of the GRDC's Soil Biology Initiative... The research into disease suppressive soil focuses on the following areas: the physical, chemical and biological features of disease suppressive soils, and whether they are regionally specific; determining whether disease suppression in soils is a temporal phenomenon and whether it targets specific pathogens' potential development of a disease suppression index based on the genetic signature of a soil community; and management of the crop-soil ecosystem, including the physical and chemical environments, to increase disease suppression...
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Catalogue: GRDC Media
Suppressive soils offer defence against grain diseases.. "There are soils right across the country where the incidence or severity of disease is suppressed, even in the presence of the pathogen that causes it, a host plant and a favourable environment," A/Professor Mele said... If we create a habitat that favours one type of soil microbe, say through repeated use of the same management practice such as addition of fertiliser or sowing the same plant types, the community may end up with fewer types of biota present; thereby reducing the resilience of the system...
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