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Soil and Water Management
Major Funded projects

Reducing the persistence of Izamethapyr residues in acid soils

Enhancing the beneficial effect of pulses on wheat production

Sorption characteristics and degradation of some herbicides in Australian soils

Processes causing pH stratification of surface soils

Sustainable rotations through recharge control by enhanced lucerne water uptake

Effect of a polymer on soil water retention/release characteristics and plant water use efficiency

Controlled root zone irrigation

Effect of pulsing on wetting patterns with T-tape subsurface irrigation system

Enhancing the beneficial effect of pulses on wheat production

Research Supervisors:
Associate Professor Scott Black; Dr Jeff Evans

Research Staff:
Mr Gerard O'Connor

Funding:
GRDC

Duration:
1996-1999

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Comparison of nitrate utilisation by lupin and wheat, with the wheat at different growth stages.

Project Summary:
Nitrogen carryover from pulses to wheat is an economic advantage within a rotation.
However, wheat yield and quality after pulses can be limited by the supply of nitrogen, and so the potential profits from cropping are reduced. Pulses boost the N supply via two pathways: (i) N from pulse residue breakdown and (ii) the N sparing effect; where N sparing refers to the common buildup of additional N coming from non-residue sources. Previous work has shown that both pathways may contribute similar amounts of N. This project will identify strategies to improve N carryover developed from an improved understanding of N transfer from pulses to wheat.