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Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000)

19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to:

the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s 572 grams of carbon, enough to supply 15 square metres of these beets. (572/(1.584 x 24))

Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000)

19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to:

the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s enough to supply 28 square metres of these beets. (1100/(1.584 x 24))

This sort of maths is sometimes done for hypothetical “how much do I have to grow in my spacecraft” questions

Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000)

19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to:

the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s 572 grams of carbon, enough to supply 3.73 square metres of these beets. (572/153.6)

Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000)

19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to:

the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s 572 grams of carbon, enough to supply 15 square metres of these beets. (572/(1.584 x 24))

Answer under construction....

Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000) 19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to: the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s 572 grams of carbon, enough to supply 3.73 square metres of these beets. (572/153.6)

Taking it slowly;

192 tonnes per hectare is 0.0192 tonnes per square metre (div 10,000)

19.2 kg per square metre over the year

0.1536 kg per day per square metre (div 125 days)

153.6 grams per day per square metre

6.4 grams per hour per square metre. (Div 24)

0.96 grams of dry matter per hour per square metre (x 0.15)

0.432 grams of carbon per ... ( x 0.45)

Derived from 1.584 grams of CO2 (div 12/44)

Using CO2 level of 410 ppm, A cubic metre of air weighing 1.22 kg contains 0.7588 grams of CO2

The averages work out to:

the square metre of beet, per hour uses the CO2 from 2.08 cubic metres of air. (1.584 / 0.7588)

The enzyme RuBisCO captures this CO2.

The amount people breathe isn’t strictly relevant. But....

A common claim is that sedentary people exhale about 1.1 kg of CO2 per day. That’s 572 grams of carbon, enough to supply 3.73 square metres of these beets. (572/153.6)