• Ecophyto
  • Logo-Cirad
  • RITA
  • Logo-CA
  • FREDON
  • LPA-COCONI

Onion

(Garlic onion)

 

  • Type of vegetable : leaves, underground organs
  • Optimum growth pH range: 5.6-6.9
  • Optimal growth temperature range : 18-27°C
  • Organic matter requirements : undemanding plant
  • Rooting : superficial (45 to 60 cm)
  • Special requirements : long days and average temperatures are necessary for the formation of the bulbs. Requires heat and drought for bulb maturation. Indifferent to photoperiod for flowering (does not induce low temperatures (vernalisation)). Not recommended in Mayotte for economic reasons in particular (import prices) or to favor fresh onions.

  

  • Seed characteristics  
  • Number of seeds per gram : 250 - 300
  • Nursery : Yes
  • Sowing depth : 10 - 13 mm
  • Line spacing : 25 - 40 cm
  • Interplant : 12 - 20 cm
  • Notes :

 

  • Seed germination time
0°C 5°C 10°C 15°C 20°C 25°C 30°C 35°C
136 days 50 d 13 d 7 d 5 d 4 days 4 days 13 d

 

  • Duration of the crop cycle under optimal growing conditions
Nursery Field

Pollination at commercial maturity

70 d 90-150 d -

 

  • Optimal storage conditions
Temperatures Relative humidity Average shelf life
0°C 95-100% 3 to 4 weeks

 

Last change : 07/22/22