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wheat situation

Catalogue: GRDC Updates
Choosing varieties has become more difficult for growers and advisers in recent years... The passive or gradual approach occurs when growers have seen varieties in trials and gradually gain confidence to manage a new variety over a number of seasons, during which time the area grown on farm gradually increases... If barley trials were not sprayed last year and varieties such as Scope , Buloke and Gairdner yielded significantly lower than Oxford , you would be concerned that leaf rust was present and potentially influenced that trial...
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Catalogue: GRDC Updates
Sowing a susceptible wheat variety on stubble of a previously infected susceptible variety (e.g. Gregory-on-Gregory) represents a much higher risk for developing high levels of yellow spot... The incidence and severity of yellow spot increases as moisture periods lengthen such that it takes repeated rain events to drive the disease from the lower to the upper canopy later in the season... Yellow spot is generally considered a significant disease in very wet seasons (e.g. 1998 and 2010) where yield losses of up to 30% have been recorded in susceptible wheat varieties...
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Catalogue: GRDC Updates
Sowing a susceptible wheat variety on stubble of a previously infected susceptible variety (e.g. Gregory-on-Gregory) represents a much higher risk for developing high levels of yellow spot... The incidence and severity of yellow spot increases as moisture periods lengthen such that it takes repeated rain events to drive the disease from the lower to the upper canopy later in the season... Yellow spot is generally considered a significant disease in very wet seasons (e.g. 1998 and 2010) where yield losses of up to 30% have been recorded in susceptible wheat varieties...
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