Question: Who is depicted tilling the soil and growing vines in the background of the picture?
About the article "Sistine Chapel ceiling", section "Story of Noah".

Candidate passages:
Ploughing includes tilling of soil, intercultural ploughing and summer ploughing.
Ploughing uproots weeds, causing them to die.
In summer ploughing is done during deep summers.
Summer ploughing also helps in killing pests.
Mechanical tilling can remove weeds around crop plants at various points in the growing process. 
Farming activities.
Land preparation.
Mechanical tilling of the land is undertaken on gentle slopes.
On flat land, harrowing is carried out to renew the soil fertility. 
Tilling is a fictional coastal town, based on Rye, East Sussex, in the "Mapp and Lucia" novels of Edward Frederic Benson (1867–1940). 
Natural farming recognizes soils as a fundamental natural asset.
Ancient soils possess physical and chemical attributes which render them capable of generating and supporting life abundance.
It can be argued that tilling actually degrades the delicate balance of a climax soil in the following ways: 1.
Tilling may destroy crucial physical characteristics of a soil such as "water suction", its ability to send moisture upwards, even during dry spells.
The effect is due to pressure differences between soil areas.
For more on this subject see water potential.
Furthermore, tilling most certainly destroys soil horizons and hence disrupts the established flow of nutrients.
Reportedly, a study suggests that reduced tillage preserves the crop residues on the top of the soil, allowing organic matter to be formed more easily and hence increasing the total organic carbon and nitrogen when compared to conventional tillage.
The increases in organic carbon and nitrogen increase aerobic, facultative anaerobic, and anaerobic bacteria populations.
2.
Tilling over-pumps oxygen to local soil residents, such as bacteria and fungi.
As a result, the chemistry of the soil changes.
Biological decomposition accelerates and the microbiota mass increases at the expense of other organic matter, adversely affecting most plants, including trees and vegetables.
It is well-known to gardeners and farmers that for plants to thrive, a certain quantity of organic matter (around 5%) must be present in the soil.
3.
Tilling uproots all the plants in the area, turning their roots into food for bacteria and fungi.
This damages their ability to aerate the soil.
Living roots drill millions of tiny holes in the soil and thus provide oxygen.
They also create room for beneficial insects and annelids (the phylum of worms).
Some types of roots contribute directly to soil fertility by funding a mutualistic relationship with certain kinds of bacteria (most famously the rhizobium) that can fix nitrogen.
Besides no tillage, Fukuoka also advocated that there should not be any change in the natural landscape.
This idea differs significantly from some recent permaculture practice that focuses on permaculture design, which may involve the change in landscape.
For example, Sepp Holzer, an Austrian permaculture farmer, advocates the creation of terraces on slopes to control soil erosion.
Fukuoka avoided the creation of terraces in his farm, even though terraces were common in China and Japan in his time.
Instead, he prevented soil erosion by simply growing trees and shrubs on slopes. 
ing (composting) over unwanted plants.
Sufficient mulch over plants will destroy them, and may be more advantageous than using herbicide, cutting, mowing, pulling, raking, or tilling.
The higher the temperature that this "mulch" is composted, the quicker the reduction of undesirable materials.
"Undesirable materials" may include living seed, plant "trash", as well as pathogens such as from animal feces, urine (e.g.
hantavirus), fleas, lice, ticks, etc.
In some ways this improves the soil by attracting and feeding earthworms, and adding humus.
Earthworms "till" the soil, and their feces are among the best fertilizers and soil conditioners.
Urine may be toxic to plants if applied to growing areas undiluted.
See Compost ingredients: Urine.