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  #1  
Old 04-23-2008, 02:48 PM
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Default Converting mg/L into kg/ha

Can someone help; I'd like to convert Olsen P (in mg/L) into kg/ha of P? I have a volume weight (g/ml) and a bulk density (g/cm3). As an example.
Olsen P = 20 mg/L, volume weight = 1 g/ml, bulk density = 1 g/cm3 and a sampling depth of 15cm. Any help would be greatly appreciated!!!!
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Old 04-24-2008, 05:02 PM
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Default Re: Converting mg/L into kg/ha

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Originally Posted by Unregistered
Can someone help; I'd like to convert Olsen P (in mg/L) into kg/ha of P? I have a volume weight (g/ml) and a bulk density (g/cm3). As an example.
Olsen P = 20 mg/L, volume weight = 1 g/ml, bulk density = 1 g/cm3 and a sampling depth of 15cm. Any help would be greatly appreciated!!!!
You first need to work out what volume of soil you actually took for your sample. 15cm deep, and what cross sectional area?

Then you need to work out how much P was in that total sample. - That is the P for that area.

Then take this amount of P per area, and calculate the amount of P for 1 ha.

You are welcome to write down your calculations for this exercise, and we can check them for you, if you like. Note: Your posts appear immediately if you are registered. Unregistered posts can take a few hours to appear.
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Old 03-20-2013, 01:33 PM
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Default Re: Converting mg/L into kg/ha

thanks for the request, it was simple and so so logical
if develop it more please
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  #4  
Old 04-04-2014, 03:16 AM
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Default Re: Converting mg/L into kg/ha

mg/L = g/m3
1 ha = 10000 m2
15 cm depth = 0,15 m
10000 m2 * 0,15 m = 1500 m3
mg/L * 1500 = g/ha
mg/L * 1,5 = kg/ha
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