If we may accept that S removal in grain is lower than commonly accepted... S requirements of the trial yields could have been satisfied even considering an arbitrary figure of only 50% efficiency, except the Nyngan site... The figure of 50% above has no sound basis the author is aware of...
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Three years of trials by the Grains Orana Alliance (GOA) in the central-west region of New South Wales have consistently failed to demonstrate a canola yield or oil response to the addition of sulfur, which challenges the current recommended practice for canola... Given that most canola growers apply 20 kilograms of sulfur per hectare as a matter this is likely to be reducing growers' profitability.".. None of the trials responded to sulfur in oil or yield...