Written by cpm from CPM Magazine
Download PDF Nitrogen and carbon were hot topics at the International Fertiliser Society conference last December. CPM reports the highlights. Not all soils are equal when it comes to carbon sequestration. By Lucy de la Pasture Nitrogen-use efficiency (NUE) is something that’s on everyone’s lips this spring as the steep rise in fertiliser prices concentrates minds on getting the most out of any bagged nitrogen. To shed more light on the issue, Renske Hijbeek, assistant professor at Wageningen University and Research in the Netherlands, discussed what’s known about NUE in her paper presented at the International Fertiliser Society Conference, which took place at Robinson College, Cambridge last December. She highlighted that the average NUE in crop production has fallen from around 70% in 1960 to nearer 50% in 1980 – a level it has continued at to the present day – meaning nitrogen use has become less efficient. Her colleague, Dr Hein ten Berge looked at 549 nitrogen response trials to determine whether the shape of the curve could be best explained by Liebig’s Law of the Minimum or Mitscherlich’s Law of Diminishing Returns. Hein found that Mitscherlich best described what was happening to yield as nitrogen input was increased. “High…
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Download PDF Nitrogen and carbon were hot topics at the International Fertiliser Society conference last December. CPM reports the highlights. Not all soils are equal when it comes to carbon sequestration. By Lucy de la Pasture Nitrogen-use efficiency (NUE) is something that’s on everyone’s lips this spring as the steep rise in fertiliser prices concentrates minds on getting the most out of any bagged nitrogen. To shed more light on the issue, Renske Hijbeek, assistant professor at Wageningen University and Research in the Netherlands, discussed what’s known about NUE in her paper presented at the International Fertiliser Society Conference, which took place at Robinson College, Cambridge last December. She highlighted that the average NUE in crop production has fallen from around 70% in 1960 to nearer 50% in 1980 – a level it has continued at to the present day – meaning nitrogen use has become less efficient. Her colleague, Dr Hein ten Berge looked at 549 nitrogen response trials to determine whether the shape of the curve could be best explained by Liebig’s Law of the Minimum or Mitscherlich’s Law of Diminishing Returns. Hein found that Mitscherlich best described what was happening to yield as nitrogen input was increased. “High…
The post International Fertiliser Society – An unequal playing field? appeared first on cpm magazine.
Continue reading on CPM website...
If you are enjoying what you read then why not considering subscribing here: http://www.cpm-magazine.co.uk/subscribe/