Chemical Weathering. Chemical weathering takes place in almost all types of rocks. Smaller rocks are more susceptible, however, because they have a greater amount of surface area. Chemical reactions break down the bonds holding the rocks together, causing them to fall apart, forming smaller and smaller pieces.
Autos generally are ready to harvest sooner than photoperiod. Most autos are ready to harvest 65-90 days after being sprouted from seed. Some super autos have been bred to grow very big and can take up to 100 days before harvest.
These crops grow very fast, reaching near maximum production levels in 80 to 90 days. There are many varieties of turnips available and some are bred for root production and some for their forage. Studies have shown that turnips can accumulate dry matter in October as fast as field corn does in August.