User:Katielt24/sandbox

The history of Daucus carota and its cultivation in different parts of the world can be traced back through historical texts and artwork. Paintings from the 16th and 17th century, for example, that are of maids in a market or farmer's most recent crop scan be of great information on carrot's history. Studying these paintings can show how and when different subspecies developed. Yellow or red roots were found to be cultivated in Turkey, North Africa, and Spain. Anthocyanins were also shown in the paintings. If has also been found that orange colored roots were cultivated in 17th century Netherlands.

"Daucus [carota] has been reported to contain acetone, asarone, choline, ethanol, formic acid, HCN, isobutyric acid, limonene, malic acid, maltose, oxalic acid, palmitic acid, pyrrolidine, and quinic acid." When in contact with wet Daucus carota, skin irritation and vesication may occur.

Crown rot, or Rhizoctonia solani, is a soilborne fungus. It attacks roots nearing maturity in carrots and may result in the death or severe weakening of seeds before or after germination. Crown rot is most prevalent in wet areas in warm climates. Symptoms on the roots of carrot are typically brown-black deep lesions or cankers near the crown or other root parts. Overall the rotting process is dry, unlike other carrot fungus. R. solani can survive through winter or longer on the debris of plants. Greatest risk to infection occurs at high humidity with temperatures greater than 64º F. Easily spreadable in closely planted fields. The rotation of fields, removing of plant debris after harvest and enhanced soil drainage and air circulation are highly recommended to reduce R. solani  survival and infection.

Fusarium dry rot of carrot is caused by Fusarium spp,. The soilborne fungi can grow wherever carrots are found. Fusarium dry rot is also called a carrot root disease, but it can also attack the seeds. The fungus develops after full maturity and/or in storage. Fusarium spp, can survive in many ways including plant debris/residue or in mycelia. Wet, warm temeratures as well as wounds on the root can result in the growth of Fusarium spp,. Symptoms include brown, leathery lesions, side cankers and the decay of the crown of the carrot. Dry, cold storage of carrots after cultivation can stop Fusarium dry rot from continuing to develop.