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If intending to grow lucerne with SDI it is advisable to grow another crop immediately following installation of the SDI system... Laterals are spaced more widely in finer textured soils and narrower in coarser textured soils to ensure adequate horizontal movement of water where this is required (in broadacre crops for example)... The development of SDI is most profitable when: the water supply is insufficient to optimise crop performance with existing irrigation systems (but there is an adequate and reliable supply over the life of the project which must exceed 10 years to produce high yielding crops) there are a range of higher return crops that can be grown the cost of water increases the irrigator has the skills and ability to maintain and manage the SDI system to ensure its longevity...
GRDC Final Reports
Effect of cropping rotations on pest and beneficial invertebrates of canola Svetlana Micic, DAFWA Paper 1 29KB Paper ...
GRDC Updates (West)