1. Introduction to Cabbage as a Crop
Botanical Aspects:
Cabbage (Brassica oleracea var. capitata) is part of the Brassicaceae family, known for its leafy green heads. The notes likely cover its botanical characteristics, including its biennial nature, although it's usually grown as an annual cr...
,Climate requirement
Cabbage is a cool weather crop.
Grow best under full sunlight.
Can be grown throughout the year when suitable cultivar is used.
Tolerant to frost and can survive temperatures low as -3°C withou
harm
But optimal mean temperature for growth and quality head
development
o 15 – 18°C
o With a minimum temperature of 4°C
o Maximum of 24°C
,NB: Poor environmental condition during growing period can lead to
quality problems during harvest.
Examples: High temperatures and low moisture level lead to small
plants and low yield.
: Too low temperatures during growing period leads to long
stem and bolting (flower stalk formation and seeding).
Young plant vs matured plants
Tolerant to heat and cold than matured plants.
Well hardened can withstand freezing temperatures for a short
period.
, •Hardening
• process of exposing transplants (seedlings)
gradually to outdoor conditions.
• It enables transplants to withstand change in
environmental conditions.
• Encourages change from soft, succulent growth to
a firmer and hard growth.
• 1-2 weeks prior to setting out plant in you field.
•Cabbage is biennials – vegetative growth continues
while plants pass through juvenile phase when they
cannot be vernalized.
•Vernalization – exposing cabbage plant which are
beyond juvenile phase to low or chilled temperature in
order to induce flowering.
• Only cabbage plants with stem diameter
of 7 mm can be vernalized.
• Vernalization temperature of 1.7 to 10°C
•.
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