Grazing effects did not drive yield loss in black Vertosol soils.. Tracking collars were used to create a map of Livestock Residence during the grazed period (Figure 1) and clods were collected from 10-20cm depth and scanned using CT to assess changes in porosity (Figure 2)... On reflection we believe that wetting and drying cycles in Vertosols will 'even out' even extreme management events given enough time, water and heat...
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Catalogue: GRDC UpdatesRelated categories:
Prior to sowing wheat in April, clods will be collected from the same, GPS located sites and scanned for soil structural properties using tomography and SCAMP. Soil moisture and NDVI will be monitored before a yield map is generated that will be compared to the original LRI map for any relationship between livestock presence and grain yield... The extent of change in porosity in clods collected from 10-20cm depth (the depth at which livestock compaction is typically observed) shows no relationship between Livestock residence and clod porosity (Figure 4)... Livestock residence index and porosity of clods collected from 20 sites ranging from low to high LRI..
Catalogue: Ground CoverRelated categories:
Vertosol soils reveal dual-purpose potential.. The cracking clay soils of northern NSW may be grazed without detracting from yields.. Tracking collars were used to create a map of 'livestock residence' during the grazed period and clods were collected from 10 to 20-centimetre depth and scanned using CT (soil X-rays) to assess changes in porosity (Figure 1)...