Onion

Allium cepa


Watering
Intermediate

Cultivation
transplanted

Harvesting
80 - 150 days

Labour
Intermediate

Sunlight
full sun

pH Value
6 - 7.5

Temperature
20°C - 25°C

Fertilization
Intermediate


Onion

Introduction

The onion is a hardy cool-season biennial but usually grown as an annual crop. They come in a variety of shapes, sizes, and colors. Farmers will generally grow onions from seeds and transplant the seedlings. Onion sets are mainly used for seed production. Depending on the duration of the variety grown and climatic conditions, farmers can cultivate 3 cycles of onion per year.

Advisory

Choose your growth stage to browse useful tips!

Preparing Your Season

Biological methods to treat seedbeds
Sterilize the seedbed using solar radiation

Care

During cultivation, place mulch coverings around and between the plants to discourage weeds and to hold moisture in. Keep the soil moist so that shallow roots can take up water. Apply nitrogen fertilizers every few weeks to increase bulb size, and stop fertilization when onions start to push the soil away, and the bulbing process has begun. At harvest, the roots should be clipped and the tops should be cut back up to 3 cm. The bulbs should be allowed to dry for several weeks before being stored in a storage area. Store at 5 to 10°C in a nylon bag. In addition, do not store onions alongside with apples or pears.

Soil

The best soil for successful onion cultivation is deep, friable loam and alluvial soils with good drainage, moisture-holding capacity and sufficient organic matter. The optimum pH range, regardless of soil type, is 6.0 - 7.5, but onions can also be grown in mild alkaline soils. They require abundant sun and drainage. The onion plants grow well in raised beds or rows of mounded soils that are at least 10 cm high.

Climate

Onion is a temperate crop but can be grown under a wide range of climatic conditions such as temperate, tropical and subtropical climate. The best performance can be obtained in a mild weather without the extremes of cold and heat and excessive rainfall, however, onion can withstand freezing temperatures. It requires about 70% relative humidity for good growth. It can grow well in places where the average annual rainfall is 650-750 mm with good distribution during the monsoon period. Onion crops need lower temperature and shorter day light (photoperiod) for vegetative growth while during the bulb development and maturity stage it needs a higher temperature and longer day light.

Probable Diseases

Select a growth stage to see the diseases that threaten your crop during that period.

Onion

Onion

Learn all about how to grow it in Plantix!


Onion

Allium cepa

Onion
USE PLANTIX NOW!

Introduction

The onion is a hardy cool-season biennial but usually grown as an annual crop. They come in a variety of shapes, sizes, and colors. Farmers will generally grow onions from seeds and transplant the seedlings. Onion sets are mainly used for seed production. Depending on the duration of the variety grown and climatic conditions, farmers can cultivate 3 cycles of onion per year.

Key Facts

Watering
Intermediate

Cultivation
transplanted

Harvesting
80 - 150 days

Labour
Intermediate

Sunlight
full sun

pH Value
6 - 7.5

Temperature
20°C - 25°C

Fertilization
Intermediate

Advisory

Choose your growth stage to browse useful tips!

Preparing Your Season

Biological methods to treat seedbeds
Sterilize the seedbed using solar radiation
Onion

Onion

Learn all about how to grow it in Plantix!

Care

During cultivation, place mulch coverings around and between the plants to discourage weeds and to hold moisture in. Keep the soil moist so that shallow roots can take up water. Apply nitrogen fertilizers every few weeks to increase bulb size, and stop fertilization when onions start to push the soil away, and the bulbing process has begun. At harvest, the roots should be clipped and the tops should be cut back up to 3 cm. The bulbs should be allowed to dry for several weeks before being stored in a storage area. Store at 5 to 10°C in a nylon bag. In addition, do not store onions alongside with apples or pears.

Soil

The best soil for successful onion cultivation is deep, friable loam and alluvial soils with good drainage, moisture-holding capacity and sufficient organic matter. The optimum pH range, regardless of soil type, is 6.0 - 7.5, but onions can also be grown in mild alkaline soils. They require abundant sun and drainage. The onion plants grow well in raised beds or rows of mounded soils that are at least 10 cm high.

Climate

Onion is a temperate crop but can be grown under a wide range of climatic conditions such as temperate, tropical and subtropical climate. The best performance can be obtained in a mild weather without the extremes of cold and heat and excessive rainfall, however, onion can withstand freezing temperatures. It requires about 70% relative humidity for good growth. It can grow well in places where the average annual rainfall is 650-750 mm with good distribution during the monsoon period. Onion crops need lower temperature and shorter day light (photoperiod) for vegetative growth while during the bulb development and maturity stage it needs a higher temperature and longer day light.

Probable Diseases

Select a growth stage to see the diseases that threaten your crop during that period.