Onion
The onion (Allium cepa L.) (Latin cepa = onion), also known as the bulb onion or common onion, is a vegetable and is the most widely cultivated species of the genus Allium. The onion plant is unknown in the wild, but has been grown and selectively bred in cultivation for at least 7,000 years.[citation needed] It is a biennial plant, but is usually grown as an annual. Modern varieties typically grow to a height of 15 to 45 cm (6 to 18 in). The leaves are yellowish-green and grow alternately in a flattened, fan-shaped swathe. They are fleshy, hollow, and cylindrical, with one flattened side. They are at their broadest about a quarter of the way up beyond which they taper towards a blunt tip. The base of each leaf is a flattened, usually white sheath that grows out of a basal disc. From the underside of the disc, a bundle of fibrous roots extends for a short way into the soil. As the onion matures, food reserves begin to accumulate in the leaf bases and the bulb of the onion swells.
In the autumn, the leaves die back and the outer scales of the bulb become dry and brittle, and this is when the crop is normally harvested. If left in the soil over winter, the growing point in the middle of the bulb begins to develop in the spring. New leaves appear and a long, stout, hollow stem expands, topped by a bract protecting a developing inflorescence. The inflorescence takes the form of a globular umbel of white flowers with parts in sixes. The seeds are glossy black and triangular in cross section.
Suggested products for Onion
Eraze 360 Bi-Aquatic Herbicide
Eraze 360 Bi-Aquatic is a non-selective herbicide containing 360 g/L of the active ingredient glyphosate present in the form of an… Read More
Read moreWettable Sulphur
Wettable Sulphur is a preventative fungicide and miticide and is for the control of certain fungal diseases in grape vines, pome… Read More
Read morePhosphoric Acid
Phosphoric Acid has various applications, including water pH adjustment, cleaning irrigation lines and phosphate fertiliser source. Quickly and effectively reduces water… Read More
Read moreKelpro Maxx
Kelpro Maxx is a new formulation which is a mixture of seaweed and auxinone. The product gives the benefits of two products… Read More
Read moreMancozeb DG
Mancozeb DG is a dry flowable preventative fungicide formulation for the control of certain fungal diseases in ornamentals and turf. Economical… Read More
Read moreKieserite Magnesium Sulphate Granular
Kieserite is a naturally occurring mineral that is chemically known as magnesium sulphate monohydrate. It is mined from ancient marine deposits… Read More
Read moreNutrafeed 7
Nutrafeed 7 is a soluble crystalline blend formulated for fertigation or foliar application Ideal for use on crops post flowering due… Read More
Read moreNutrafeed 23
Nutrafeed 23 is a soluble crystalline blend formulated for fertigation or foliar application Significantly improves overall crop fertility levels and increases… Read More
Read moreNutrafeed 19
Nutrafeed 19 is a soluble crystalline blend formulated for fertigation or foliar application. Significantly improves overall crop fertility levels and increases… Read More
Read moreNurture™ N 30-0-0
Nurture™ N 30-0-0 is a unique, controlled release liquid nitrogen foliar fertiliser designed for use in a wide range of agricultural/horticultural… Read More
Read more
Key-El Manganese
Quality water soluble chelated nutrients for the prevention and correction of trace element deficiencies and disorders in plants. Key-El chelated products… Read More
Read moreKey-El Iron
Quality water soluble chelated nutrients for the prevention and correction of trace element deficiencies and disorders in plants. Key-El chelated products… Read More
Read moreKey-El BTE
Quality water soluble chelated nutrients for the prevention and correction of trace element deficiencies and disorders in plants. Key-El chelated products… Read More
Read moreIndicate 5
An acidifying wetter-spreader containing a pH indicator for use as a penetration, buffering and compatibility aid with alkaline sensitive pesticides, herbicides… Read More
Read more