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atmospheric nitrogen

Catalogue: Ground Cover
Thomas examined the outcomes of soil sampling by growers in the Birchip Cropping Group... The soil test project has shown the importance of rain not only to provide water for crops but to mineralise nitrogen to help crops to grow, as well as the importance of controlling summer weeds such as heliotrope and the benefit of timing of soil testing... The most important observation from this project has been timing of testing...
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