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soil critical level

Catalogue: GRDC Updates
Three years of trialling by GOA has consistently failed to demonstrate a significant response to the addition of sulfur (S) in yield or oil%... Numerous trials by other organisations recently have also failed to demonstrate responses to sulfur in canola... In summary, 20 trials have now recently been undertaken across a number of seasons and locations in NSW. None of them have demonstrated S responses in yield or oil %. This does not exclude deficiency and yield penalties from occurring but does highlight that the frequency and the likelihood is not high...
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Catalogue: GRDC Updates
Sulfur strategy to improve profitability in canola in the central west of NSW.. In summary, the frequency of response to added S is quite low, considering the detailed trials in this paper less than 14% of trial sites were responsive (excluding the field study of 1990 and those of CWFS)... In summary, 20 trials have now recently been undertaken across a number of seasons and locations in NSW. None of them have demonstrated S responses in yield or oil %. This does not exclude deficiency and yield penalties from occurring but does highlight that the frequency and the likelihood is not high...
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