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The N value in NPK labels represents actual percentage of nitrogen element by weight, so it does not need to be converted. So, for example, an 18−51−20 fertilizer contains by weight 18% elemental nitrogen, 0.436 × 51 = 22% elemental phosphorus, and; 0.83 × 20 = 17% elemental potassium.
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A fertilizer (American English) or fertiliser (British English) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Many sources of fertilizer exist, both natural and industrially produced. [1]
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The specific spreading of fertilizer is also known as aerial topdressing in some countries. Many countries have severely limited aerial application of pesticides and other products because of environmental and public health hazards like spray drift ; most notably, the European Union banned it outright with a few highly restricted exceptions in ...
Hazard pictograms form part of the international Globally Harmonized System of Classification and Labelling of Chemicals (GHS). Two sets of pictograms are included within the GHS: one for the labelling of containers and for workplace hazard warnings, and a second for use during the transport of dangerous goods.
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The Minnesota Vikings announced on Tuesday that they have signed former New York Giants quarterback Daniel Jones to their 53-man roster.. In a corresponding move, they waived third-string ...