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    Add as FriendChrysanthemum

    by: Datta

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    1 : Chrysanthemum Mr. Datta Awchar
    2 : Native: Europe and Asia Scientific name: Dendranthema grandiflora Family: Asteraceae Florist’s Chrysanthemum: Chrysos – Golden anthos – Flower
    3 : Importance Second largest cut flower Queen of the East Japanese National Flower Wide range of type, size, colour and forms Short day plant
    4 : Uses Cut flowers – Erect and tall growing cultivars Pot culture – Dwarf and compact growing ones Loose flower -Garland, Veni, Worship –
    5 : Flower Composite inflorescence with individual flowers on a capitulum Bloom consists of hundreds of florets Two kinds of florets – Ray floret (outside rows) and Disk floret (centre)
    6 : Classification 1. Based on arrangement of floret Single: one or more ray florets with disk floret at the centre
    7 : b) Anemone: Disk florets are elongated and tubular forming a cushion
    8 : c) Pompon: short uniform ray flowers, disk flowers are not apparent. Three distinct sizes: small button, intermediate and large
    9 : d) Decoratives: Outer florets are longer than the central florets giving a flat and informal shape
    10 : e) Large flowered: Flower heads greater than 10cm composed of mainly ray floret, disk florets are not apparent. Grouped into Incurved double Reflexed double Tubular ray floret
    11 : i. Incurved double : Regular incurve Irregular incurve Intermediate incurve
    12 : ii. Reflexed double: Regular reflex Irregular reflex Reflex
    13 : iii.Tubular ray floret Fuji Spider
    14 : Spoon Quill
    15 : 2. Based on cultural types: Standards b. Disbuds c. Sprays
    16 : 4. Based on photo period response Cultivars within six week group Requires six weeks to reach full bloom. Light inefficient. b. Cultivars between six weeks and fifteen weeks Year round flowering. Light efficient
    17 : Polyhouse cultivation Advantages More sturdy plant than rose, more vase life Inspite of inadequate refrigeration and transportation, it will arrive in a better shape in international market In local Indian markets flowers are well received
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    20 : Temperature Night temperature of 16 - 20°C optimum for flower development Temperature range for vegetative growth 20 - 24°C High temperature cause floral distortion and low temperature cause discolouration of flowers
    21 : Light Short day plant with respect to flowering Two critical photo periods, one for floral initiation and another for flower development
    22 : Day length Vegetative growth occurs when illumination is twelve hours or more Flower induction require at least 13 hours of night Time between start of short day period and flowering is called reaction time
    23 : Artificial lighting Continuous or cyclical making use of timers Light bulbs of 150 W Number of bulbs per square meter is 9 Lux in all spots comes to 90 Black clothing
    24 : Relative humidity Moderate humid condition of 70 – 90 % Carbon dioxide 800 to 1000 ppm Benefits Increased dry weight and lateral branching Larger leaf area and shorter production time
    25 : Propagation Sucker- separated from mother plant Cuttings- rooted or unrooted 5-7 cm length 2500 ppm IBA Micro propagation Seeds
    26 : Media Soil, OM, sand in 1:1:1 proportion OM- coco peat, FYM or peat moss in combination with sand pH - 6.5 Media sterilized by steam heating or using chemicals like methyl bromide
    27 : Selection of cultivars 7 - 9 week response groups – high light intensity areas 12 – 14 week response groups – low light intensity areas Market demand Spiders – Netherlands and Germany Single spray – Denmark, Sweden, Finland Decorative types - UK
    28 : Planting density 32 cuttings per m2 – with respect to planting cost and returns 48 cuttings per m2 – normal development of plant and bloom
    29 : Planting Rooted cuttings are graded and planted in beds of 12.5 cm width Shallow planting Any time of the year
    30 :
    31 : Fertilizers NPK: 200 to 300 ppm Deficiency of Calcium – Calcium nitrate @ 3 g/L Magnesium – Magnesium sulphate @ 10 g/L Boron – Borax @ 0.02 g/L
    32 : Watering Overhead sprinkling system with rotating sprinklers Misting Drip line or hose pipe – after flowering
    33 : Pinching When buds separated from one another or stems begin to elongate Improves the spray shape Done second and third week before harvesting
    34 : Disbudding Remove all lateral flower buds from main stem. High quality terminal flower
    35 : Growth regulators ALLURE and B-Nine (ai-daminozide) increases the stem weight Berelex (Gibberellin) increase growth
    36 :
    37 : Harvest Yield: 3-4 MAP Stage of harvesting Single cultivar: when the maximum number of flowers are open Anemone cultivar: central cushion in the topmost flower not fully developed Decorative: petals in the centre of top most flower developed Standards: outer ray floret ceased to elongate Potmums: flowers are about half to fully open
    38 : Thank You

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