Onion Analysis In Agriculture

Q: What is onion?

a swollen edible bulb used as a vegetable, having a pungen t taste and smell and composed of several concentric layers.

The onion has one or more leafless flower stalks that reach a height of 75–180 cm (2.5–6 feet), terminating in a spherical cluster of small greenish white flowers. Most commercially are grown from the plant’s small black seeds, which are sown directly in the field, but onions may also be grown from small bulbs or from transplants. The bulbs vary in size, shape, colour and pungency, though warmer climates generally produce onions with a milder, sweeter flavor than do other climates

Historical view

It has been grown and selectively bred in cultivation for at least 7,000 years. The history of ancestral onion species is not well documented. Ancient records uses spans western and eastern Asia, so the geographic origin are uncertain. It have been variously described as having originated in Iran, western Pakistan and Central Asia. The species Allium fistulosum were domesticated in China around 6000 BCE alongside other vegetables.

Which Verities Are Cultivated Commonly?

Yellow
White
Red
Shallots
Green
Leeks
Sweet

Yellow

Yellow onions are suitable for any conceivable use, other than perhaps as a garnish for your martini. You could easily live a rich and fulfilling life even. Its heavy brown parchment skin surrounds ivory white flesh with a strong, sulphury, pungent flavor and aroma.

White

This is mostly cultivated for its distinct light and mild flavour profile. Most liked then other types. They have a high sugar and low Sulphur content, and thus have a relatively short shelf life. This type is used in a variety of dishes.

Red

It is cultivars of the onion (Allium cepa) and have purplish red skin and white flesh tinged with red. They are most commonly used in cooking. Its look to be medium to large in size and have a sweeter flavor than white, due to low levels of pyruvic acid and sulfur compounds.

Shallots

This is a cultivar group Until 2010. It has classified as a separate species, Allium ascalonicum. The taxon was synonymized with Allium cepa in 2010, as the difference was too small to justify a separate species. Shallots are one of the more versatile ingredients you’ll ever come across. They can be used as aromatics to build flavor in a sautéed dish, stock or sauce the same way.

Green

Such types have harvested when their tops are green and the underdeveloped bulbs are 13 mm (0.5 inch) or less in diameter. Many commercial types are immature plants of the common onion (Allium cepa), but the Chinese type A Chinese and the Welsh A fistulosum, both from Asia and hybrids of A cepa and A fistulosum are also common.

Benefits

Onions might have positive effects on several different aspects of health.

Cancer prevention
Skin and hair
Blood pressure moderation

Cancer prevention

Researchers have examined allium vegetables extensively in relation to cancer, especially stomach and colorectal cancers. The researchers found that the risk of colorectal cancer was 79% lower in those who regularly consumed allium vegetables. One cup of chopped onions also provides at least 13.11%Trusted Source of an adult’s recommended daily intake of vitamin C. As an antioxidant Trusted Source. this vitamin helps counter the formation of free radical compounds that have links to cancer.

Skin And Hair Treatment

A compound of such product uses for lower blood pressure when the researchers extracted it and administered it as a supplement. The study did not examine the potential effects on blood pressure of eating onion as part of the diet rather than taking quercetin in supplement form.

Nutrition Value

Onions are a nutrient-dense food, meaning that they are high in vitamins, minerals, and antioxidants while being low in calories.

64 calories
14.9 grams (g) of carbohydrate
0.16 g of fat
0 g of cholesterol
2.72 g of fiber
6.78 g of sugar
1.76 g of protein

Nutrient	Percentage of daily requirement in adults
Vitamin C (RDA)	13.11% for males and 15.73% for females
Vitamin B-6 (RDA)	11.29–14.77%, depending on age
Manganese (AI)	8.96% for males and 11.44% for females

Typical Value

calcium.
iron.
folate.
magnesium.
phosphorus.
potassium.
the antioxidants quercetin and sulfur.

Plant diseases

Diseases are caused by several different species of Botrytis, leading to neck rot, gray mold, or leaf and flower blast. Another type of botrytis can infect its seed heads and cause brown stain on bulbs. Infectious disease cannot develop if any one of the following three basic conditions is lacking the proper environment. The most important environmental factors being the amount and frequency of rains or heavy dews, the relative humidity and the air and soil temperatures.