TYPES OF CARNATION
1. Sim/Standard Type
•
One large flower on a single stem.•
Popular in India.
2. Spray Type
•
Several smaller flowers per stem.•
Popular in USA.
CLIMATIC REQUIREMENTS
TEMPRETURE:
Ideal night temperature is 10-11 degree celsiusduring winter and 13-15 degree Celsius in
summer.
Optimum temperature for standard carnation is 18-23 degree Celsius.
Optimum temperature for quality flower is 10-12 degree celsius.
LIGHT:
It is a long day plant.
The Critical photoperiod for most standard and spray carnation is about 13 hours.
Light intensity 21.5 klux.
HUMIDITY:
Relative humidity 80-85% during vegetative growth.
60-65% RH sufficient during full growth stage of plants.
CO2 CONCENTRATION:
10-30%co2increaseinyieldinfluencedbyco2treatmentandtemperatureandlight
conditions.
Co2concentrationis500to750ppmduringdaytimeunderhighlightintensityand
temperaturerangeof14-15degreeCelsius.
SOIL:
Clay loamy soil with high organic compounds or mineral matters.
pH range of soil between 5.5 to 6.5.
Good facilities of water drainage.
BED PREPARATION:
The ideal bed width and height are 75-100 cm and 30-45 cm respectively.
The length of bed should not exceed 25 meter.
The path width of 45-50 cm is ideal for many operation like walking and weeding.
PLANTING:
Planting in the squares of net.
SPACING:-
Standard type-20x20 cm; Spray type-30x30 cm.
PLANT PROTECTION
PHYSIOLOGICAL DISORDER
CALYX SPLITTING:
The petals lose support and bend down which can destroy the flowers shape and
structure.
Factors: Low temp. <10 degree Celsius, Low N2, Low Boron level.
SLEEPINESS:
Petals to curl inward and upward, resembling wilting.
Factors: High ethylene due to faulty heaters or leaky gas pipes.
INSECT-PEST AND DISEASE MANAGEMENT
DISEASES:
Pythium, Phytopthorarot, Fusarium wilt, Fusarium stem rot, Alternaria blight, Grey
mold.
PESTS:
: Aphid, Mealybug, Spidermite, Thrips, Whitefly
Control:
Soil Sterilisation –Chloropicrin
Dithane–0.6 gm/litre 3.
Metasystox–1.25 ml/litre
Karathane–1.00 ml/litre
Volume of preventive spray –1500 litre/spray and frequency is 50 sprays/year i.e. once
in a week.