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rooting depth

Catalogue: GRDC Updates (North)
Application of nitrogen to most crops will affect grain yield, grain protein or both, depending on the available nitrogen supply relative to crop demand... Soil analysis conducted recently have indicated that EC, sodicity and chloride content have increase in the root zone of some soils due to capillary rise arising from the extended dry period... Environment mean yield (t/ha) d) Reduced tillering Several years ago I proposed that the incidence of haying-off could be reduced by increasing the storage of stem sugars by several means...
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Catalogue: GRDC Updates (South)
Application of nitrogen to most crops will affect grain yield, grain protein or both, depending on the available nitrogen supply relative to crop demand... Soil analysis conducted recently have indicated that EC, sodicity and chloride content have increase in the root zone of some soils due to capillary rise arising from the extended dry period... Environment mean yield (t/ha) d) Reduced tillering Several years ago I proposed that the incidence of haying-off could be reduced by increasing the storage of stem sugars by several means...
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Catalogue: GRDC Updates
In a further study the correlation between rooting depth yield and uptake of B was measured at a B toxic site for three varieties differing in their level of B tolerance... Rooting depth was measured to a depth of 1m using soil cores taken immediately after harvest with soil cores segmented at 20cm intervals... B may not be the primary factor influencing rooting depth and the work of Nuttall et al. indicates that subsoil salinity and sodicity have a greater influence on water extraction from the subsoil than does B. This does not imply that B tolerance is irrelevant but indicates "transect" studies using a single variety need to be complemented by studies utilising isogenic lines to define the effect on yield of subsoil constraints...
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