Sun flower in Pakistan

Sun flower in Pakistan






(Presentation)

The sunflower, Enthusiast annulus L., has a place with the family composite. The variety name Enthusiast is gotten from Greek Helios 'sun' and ant hos 'bloom', Locally it is know as surajmukhi. Sixty-seven types of this variety are perceived. Other than the developed species, many are perennials, ornamental, and weeds. The sunflower has a shallow root framework. The taproot develops as profound as 3 m, however the heft of the root framework by and large stays in the 0-0.5 m skyline. The stem is roundabout, 3-6 cm in distance across, and solid, with harsh hairs and slight longitudinal edges. 

Sunflowers for the most part grow 1-3 m tall; anyway cultivars as tall as 5 m have been accounted for. The quantity of branches changes from 1 to 12; they are genuinely little and are found towards the highest point of the plant. Be that as it may, spreading is bothersome in sunflower, and the current business cultivars are single-stemmed and single-headed. The substitute leaves are generally enormous, bushy, and applaud, appended with long petioles. The quantity of leaves differs from 20 to 40, contingent upon cultivar and developing conditions. 

Prior to an thesis, the leaves are exceptionally heliotrope. For the most part up to half defoliation doesn't influence yield or oil content. Sunflower creates a plate formed head called the capitulate on the stem. The head regularly changes from 10 to 30 cm in distance across, and heads as large as 76 cm in breadth have incidentally been delivered. In each head there are 1000-4000 blossoms. The blossoms are of two kinds: 1) the external column of splendidly shaded, sterile ligate blossoms, and 2) the inward, earthy colored or purplish, ripe plate blossoms. The blossoms are organized in winding whorls beginning at the focal point of the inflorescence. All the florets on a head open in 5-10 days.


Significance: 


Palatable oil is the fundamental segment of our nourishment however we are delivering just 20% of our need and staying 80% is imported to satisfy the requirement.Keeping in see the factor of populace pressure we need to expand our nearby creation of oil.Sunflower is the best yield to accomplish that potential since its seed contain 40% great quality oil. 


Birthplace and History: 


Sunflower began in the southwestern United States, or some place in Mexico. It was acquainted with Europe in the sixteenth century and brought into Russia from Holland in the eighteenth century. In Pakistan, sunflower was first presented as an oilseed crop in the 1960's. 

Soil Type: 


Substantial soils are generally reasonable for sunflower development. Sandy and water-logged soils are not attractive for sunflower creation. 

Seedbed readiness: 


Sunflower has a very much evolved root framework, profound furrowing with a moldboard furrow is important. Profound furrowing is important to break the hard skillet in rice developed grounds. Laser land leveler ought to be utilized to level the field. 

Time of Sowing: 


Auspicious planting of sunflower is important to get more yield. If there should arise an occurrence recently planting, oil content declines and yield misfortunes happen. All through the nation sunflower is developed in two seasons: spring and summer. 


Seed rate: 


Seed rate relies on soil type, germination rate, time of planting and strategy for planting. 

2-2.5 kg of crossover seeds having germination rate over 90% ought to be utilized per section of land. 


Planting and Geometry


Sunflower planting should be possible through grower, dibbling, single line cotton drill and Kera strategy. Column to push separation ought to be 2.25-2.5 inches and plants ought to be 9 inches separated in the event of flooded zones and 12 inches separated if there should be an occurrence of rainfed territories. 


Compost necessity: 


Compost necessity of sunflower is 60 kg/section of land nitrogen, 40 kg/section of land phosphorous and 25 kg/section of land potassium.






Albeit flower inception is a perplexing marvel, it is supported by brief days, the starts at about the eight-leaf phase of advancement. The blossoms are regularly cross-pollinated, predominantly by bumble bees. The presentation of self-good half breeds is decreasing the need of bumble bees for fertilization. The head is heliotrope until the greater part of the blossoms are prepared, after which it by and large stays fixed confronting the east. The heliotrope development is identified with the degree of auxin and their circulation in effectively developing pieces of the plant (Weiss 1983'410). Seeds begin to develop at the fringe and progress towards the focal point of the plate. Seed shading fluctuates from dark to white, with striped or mottled appearance. 

The seeds are generally 10-25 mm long, 8-15 mm wide, and 3-7.5 mm thick. One thousand seeds gauge 50-100 g and by and large considerably more. The size, weight, and suitability of the seeds diminishes from the fringe to the focal point of the head. The oil substance of the seeds shifts from 25 to 48%. Cultivars with bigger white or striped seed covers and low oil content are developed for dessert shop and winged animals. The revelation of cytoplasmic male sterility and ripeness reclamation has made it conceivable to create sunflower half breeds with high oil content. Sunflower cross breeds are presently economically accessible for development (Weiss 1983:415).

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