Sunday, March 23, 2025
Floriculture

Cultivation of Jasmine ; Jasminum spp

Jasmine (Jasminum spp.) is one of the oldest fragrant ornamental crops cultivated by man. The word jasminum is derived from the Persian word jas-minum, meaning fragrance. It belongs to the olive family Oleaceae.
 Approximately 40 species are reported to occur in India. It is grown commercially in various parts of the country, particularly in the southern and eastern parts. It is estimated to have an area of about 10,000 ha with an annual production of flowers worth Rs. 10 to 15 crores. It is grown as both shrubs and climbers. 
Flowers and buds are used for making a garland, bouquet, ‘Veni’, or worship. They are also used in perfumed extraction, hair oil, and attar, particularly in the U.P.

Flowers of Spanish jasmine (Jasminum grandiflorum) are used in the world-famous ‘Jasmine oil’. Flowers are exported to Sri Lanka, Singapore, Malaysia, and Gulf countries.

Species of Jasmine Cultivated in India;

 There are three commercially important species of Jasmine in India, namely 

Jasminum grandiflorum ,                   J. Sambac                           J. auriculatum.

J.sambac; commonly known as Arabian or Tuscan jasmine, moghra, champa, motia, and mogri. It is a woody shrub with opposite leaves; flowers are white with single or multi-whorled petals, mainly used in making garlands, bouquets, worshipping, and perfume extraction.

J. grandiflorum; is known as common or Spanish Jasmine, Channels, Safed Channbeli, and Jathimalli. Flowers are white, often tinged with purple on the outside, sweet-scented, and are used in making garlands and ‘Veni’. Jasmine concrete is extracted from the flowers to this species only.
J. auricularum is also known as Jutri, Sunika, and Mugohee. Flowers are white, sweet-scented and are used for perfumed oils and ‘Attar’ production.
Jasmine Varieties ;

1) J. auriculatum  ;   Parimullai , CO1 , CO2 , Others; Long Point, Long Round, Medium Point, Short Point, and Short Round.
2) J. Grandiflorum;  CO1 , CO2 ,
3) J. Sambac;   Ramanathapuram, Gundumalli, Khoya.
 4) Others: Ramabanam, Madanbanam, Single Mogra, Double Mogra,  Iruvatchi, Kasthurimalli, Oosimalli, Soojimalli.

Propagation of Jasmine ;

 Jasmine Spa. can be propagated through the cuttings, layering, suckering, grafting, budding, and tissue culture.
 J. auriculatum; semi-hard wood cuttings 
J. grandiflorum; terminal cuttings 
J. sambac; terminal and semi-hardwood cuttings. 
Terminal five nodal cuttings in J. grandiflorum, terminal and hardwood (15 cm to 20 cm long), and cuttings in J. sambac and J. auriculatum were found best under mist propagation. 

Growth Regulator;  Quick dipping of the basal cut end in IAA or IBA @100 ppm for terminal cutting and 2500 ppm for semi-hardwood cutting give better success. 
Best Rooting Medium: Sand: Vermiculite: Moss is a 1:1:1 ratio
Planting of Jasmine ;

Spacing varies from place to place, species grown, and soil conditions.
1) For J. auriculatum; spacing 1.5 m x 1.5 m with a plant density of  

     4400 plants/ha
2) For J.grandiflorum; spacing 2 m x 1.5 m with a plant density of  
    3350 plants/ha
3) For J. sambac ; spacing 1.25 m x 1.25 m with a plant density of 
    6400 plants/ha
Time of planting: June to November (The Rainy Season is the best time for planting )
The average age of the jasmine plant is 10–15 years.

Pruning of Jasmine Plant ;

Pruning controls blooming and affects the flower yield. Watering is stopped at the end of November; plants may shed their leaves. Sometimes, stripping of leaves by hand is also practiced. All the past-season shoots are pruned to a height of about 45 cm from the ground level. All the cut-ends are smeared with any fungicidal paste to control infection.

 Pruning should be done in December for long-duration flowering. The use of defoliants like pentach pentachlorophenol, potassium chloride, and sodium chloride has been found effective and an alternative to manual pruning.

Manuring in Jasmine Field ;

An optimal dose of fertilizer with 20 g N and 40 g each of P and K per plant in the case of J. auricularum and 60 g N and 120 g each of P and K per plant along with 10 kg F.Y.M. applied in two split doses in January and July for J. grandiflorum have been recommended.
Use of growth regulators. Cycocel 500 ppm spray produced early flowering, high yield, more essential oil content, better size of flowers, and a longer duration of flowering in Spanish jasmine. 
Ethrel at 2000 ppm spray resulted in good defoliation in J. sambac, whereas it failed in J. grandiflorum. NAA at 25 ppm produced more lateral shoots, resulting in an increased number of flowers
in J. sambac.
Diseases of Jasmine ;
Leaf-blight (Cercospora jasminicola and Alternaria jasmini)
Leaf-blight

Leaf Blight disease occurs in a severe form on J. grandiflorum. Reddish-brown, circular spots can be seen on the upper surface of the leaves, which increases rapidly in the rainy season. The infected leaves of the plant curl and start drying from the margins. Even the young shoots of the plant may dry up. In severe cases of infection, vegetative
buds and young branches dry up. The flower production is very much reduced in infected plants.
Control:  Apply a spray of 0.4% Benlate solution, 0.2% Dithane M-45, or 0.1% Bordeaux mixture, which has been found effective in the control of the jasmine leaf blight disease. 
Rust (Urornyces hobsoni
Rust

Rust can be visualized on all the aerial parts of the jasmine plants, including flowers. Yellowish-orange-colored pustules mostly appear on the lower side of the jasmine plant leaves, and also on the jasmine plant young twigs and flower buds. The infected parts of the jasmine plant become fully distorted. 

Control: This problematic disease can be effectively controlled by pruning of the jasmine plant branches or spraying Copper Oxychloride (0.3%) or Mancozeb (0.2%). Sulphur at the rate of 20-25 kg/ha is also useful

Wiltlt (Fusarium solani) ;

This disease of jasmine plants occurs in patches and the roots of the plant turn black. In the case of sclerotial wilt, in addition to the above symptoms, white mycelia are found generally girdling the roots and the sclerotia are found adhering to the roots of the wilted jasmine plants. 
Control: Drenching the soil around the jasmine plant with 1% Bordeaux mixture controls wilt disease of the jasmine plant. 

Pest of Jasmine ;

Bud Worm (Hendecasis duplifacialis) ;

 It is a greenish larva with a black head, which bores into immature jasmine buds and feeds on floral structures and, in severe cases, webbing of buds. 
Control: A basal application of Carbofuran (40 g/plant) is recommended for the control of budworm of jasmine. 

The Gallery Worm (Elasmopolpus jasrninoghagus) ;Gallery Worm

 

Gallery worm is a serious pest of jasmine plants, which causes webbing of terminal leaves, shoots, and towers.
Control:  To control the gallery worm, the jasmine plants must be sprayed with Malathion (0.2%) 

 

 

 

Mites ;Mites

It attacks the undersurface of leaves, which later on become yellow and drop off. Severe puckering and discolouration of leaves are caused by the gall mite in J. auriculatum. The Jasmine variety Parimullai released by the TNAU, Coimbatore, is resistant to gall mite. 
Control: Wettable sulfur (0.3%) can be sprayed on the infested plants for controlling this pest.
 Root-Knot Nematode (Meloidogyne incognita) ;

 Root – Knot disease of the jasmine plants causes severe stunting of plants; branches of the plant become dry with yellow leaves which drop prematurely. 
Control: Apply  Neem cake at 1 t/ha or Carbofuran at 2.5kg/ha to effectively suppress the nematode population.

 

The yield of Jasmine;

Long-day photoperiods with high day and night temperatures are essential factors for a higher yield of flowers. An overage yield of 45 to 90 quintals flower/ha may be obtained in J. grandiflorum and J. auriculatum, while 10 to 80 quintals in J. sambac. The concrete recovery ranges from 0.25 to 0.32%, 0.28 to 0.36%, and 0.14 to 0.19% in J. grandiflorum, J. auriculatum, and J. sambac, respectively.
 
 

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