I am using different rates of biochar 6, 7, 8, and 10 g/kg. I want to convert it to kg/ha.
Kindly explain.
Thanks
In the first 15 cm of soil depth, the mean weight of soil is approximately 2,000,000 kg in a hectare which 10,000 square meters.
If you multiply your 6 7 8 and 10 by 10,000 you would get a rate on the basis of the hectare 60,000 gramas 60 kg per hectare.
A rate that would affect production optimally would need to much higher than that I believe.
Biochar is most effective in acid soils which the char ameliorates the acid condition.
In a alkaline soil the biochar can lead to immobilized nutrients based on its alaline condition.
Thank you Paul Reed Hepperly for your response. I would use it for the reclamation of soil salinity.
To get accurate soil volume you would need the bulk density of soil. This can be then extrapolated to find the soil volume on per hectare basis for a particular soil depth.
The depth of the soil is usually defined on the soil above the leaching layer. This differ quite some between areas, and is dependent on the amount of precipitation in one area. A couple of drill samples should be enough to tell how much you might have. With your research interest I guess you rather will need the amount of soil that is turned during plowing which depend on technique and need for the crop.
The mass of soil per ha vary from soil to soil depending upon the bulk density (BD) and depth of soil. From Area x depth you can fine the volume of soil and then by V * BD you can find the mass of the soil per ha. Generally, 1 ha soil with 15 cm depth is equal to 2 million kgs.
Muhammad Owais Khan Dear,
1 ha = 2.24 x 10 to the power 6 (0-15 cm soil depth)
For converting g/kg into kg/ha, you should be aware of the bulk density or the depth to get the final soil volume.
You can go the site: https://onlineconversion.vbulletin.net/forum/main-forums/convert-and-calculate/79998-converting-g-kg-50cm-depth-to-kg-ha
Simply for 1gbiochar/kg
1ha = 2 x 106kg soil
for 1g biochar/kg soil = 1g biochar x 2,000,000kg soil/1kg soil
Required biochar = 2,000,000g/ha
Required biochar = 2,000kg/ha
or RB = 2tons/ha (1ton = 1000kg)
For 6g/kg = 12ons/ha
7g/kg = 14tons/ha
8g/kg = 16 tons/hac
10g/kg = 20tons/ha
(6,7,8, and 10g/kg calculation is similar as for 1g/kg)
For example 6g biochar/kg soil = 6g biochar x 2,000,000kg soil/1kg soil
=12,000,000g = 12,000kg = 12tons and so on.... GOOD LUCK
B.D= Ms/Vt
B.D is bulk density , Ms is mass of soil and Vt is total soil volum.
Vt= A*H
A is area of soil and H is depth or height of soil
you can calculate soil mass based on B.D
and calulate mass of biochar per Hectare
What are the assumptions for calculating this furrow soil. Are these from dry soil basis ? at 15 cm ?
What are the assumptions for calculating this furrow soil. Are these from dry soil basis ? at 15 cm ?
To obtain the weight of one hectare of soil, we need the Bulk Density of the soil
B.D=MS/VT
VT= A*H
A=10000 m2
h=0.15 m
if B.D= 1.2 g/cm3 or 1200 kg/m3
MS= 10000* 0.15 * 1200=1800000 kg /ha or 1800 ton/ha
If you want to add 6 grams of biochar per kilogram of soil:
mass of biochar = 6 * 1800000= 1080000 g biochar per hectare or 10800 kg/ha
Weight of 1 hectare soil of 15 cm depth is about 2.24 × 1000000 kg...if rate of application of biochar is 6,7,8 and 10 g/kg of the soil then
1 kg soil need 6,7,8 and 10 g biochar
Then 2.24×1000000 or 2240000 kg soil will need = 2240000×6 g= 13440000 g or 13440 kg or 13.44 tonnes per hectare...
Likewise other rate can be calculated
2240000×7 g= 15.68 tonnes per hectare
2240000×8 g= 17.92 tonnes per hectare
2240000×10 g= 22.4 tonnes per hectare
First you have to consider the bulk density of soil
If, BD= 1.3cm3
Depth of soil= 20cm
Area hectare= 100,000cm2
Then,
Weight of soil in 20cm of 1 hectare area = 1.3*20*100,000= 2.6*106 kg
If you want to add biochar @ 10 g/kg which is equal to 0.01 kg biochar/kg soil
Then, In 1 kg soil = 0.01 kg Biochar
2.6*106 kg soil, you have to add biochar= 0.01* 2.6*106= 26000 kg
If you want to add BC @ of 10g/kg then you have to add 26000kg biochar in one hectare.
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