Leek Botanical Description BOTANICAL NAME Allium porrum L
Leek
Botanical Description BOTANICAL NAME: Allium porrum L. CHROMOSOME NUMBER: 2 n=4 x=32 FAMILY: Amarylidaceae ORIGIN: Southern Europe, North Africa and the middle East.
NUTRITIVE VALUE : a) energy - 77 kcal b) moisture - 78. 9 g c) protein - 1. 8 g d) fat - 0. 1 g e) carbohydrates - 17. 2 g f) vit. A - 30 IU g) thiamine - 0. 23 g h) calcium - 50 mg g) iron - 2. 3 mg
Adaptability: • Leeks grow best in a cool to moderate climate. • The Willamette Valley and Oregon Coast are ideal. • They can be grown here year round.
Soil ØA well-aerated soil with both good drainage and good moisture retention capacity with a p. H of 6. 5 to 7 is best, which should not be subjected to flooding at any time. ØDeep ploughing is recommended so that a longer shaft can be developed. Ø They can be grown successfully on mineral soils but in heavy, clay soils harvesting may be delayed. Climate ØLeeks grow best in a cool to moderate climate.
Varieties / Hybrids Main fall varieties (August October): American Flag, Jolant, Kilima, King Richard, Primor. Late fall - winter (October through December): Derrrick, Electra, Goldina, Goliath, Kilima, Tivi, Wintereuzen. Overwinter (spring harvest): Carina, Conqueror (moderate bulbing), Eskimo, Siberia. Sowing time Mid hills - September – October High hills- March – May Seed rate 1. 5 kg/ha
Manures and Fertilizers ØA soil test is necessary to determine phosphate and potash requirement. FYM – 250 q/ha CAN – 600 kg/ha SSP – 375 kg/ha MOP – 185 kg/ha Spacing 30 × 15 or 45 × 10 cm
Irrigation and weed control ØIrrigate uniformly to maintain vigorous, uniform growth and tender stalks. ØA total of 12 -15 inches of water may be required depending on planting date, seasonal variation and variety. ØSoil type does not affect the amount of total water needed, but does dictate frequency of water application. Lighter soils need more frequent water applications, but less water applied per application. ØApplication of 1 kg Bladex + 1. 5 kg Tribonil controls weeds
Harvesting ØLeeks do not bulb or go dormant in the fall but continue to grow slowly. Ø The time of harvest is, therefore, very flexible, depending on the time of planting, market conditions, and variety of leek planted. ØSmall leeks can be sold starting in early August, and varieties that have frost tolerance may be harvested throughout the fall and winter months. Yield 300 q/ha
Seed Production
Methods of seed production Seed to seed method : in this method, the first season bulb crop is left to overwinter in the field, so as to produce seed in following season. Bulb to seed method : v. Bulbs stored in previous season are lifted, selected and replanted to produce seed in 2 nd year. v. Mostly bulb to seed method is followed because : v. It permits selections of true to type and healthy bulbs for seed production. v. Seed yields are comparatively high.
Sowing time – Middle of October to middle of November Seed rate - 8 -10 kg/ha Manures and fertilizers FYM – 200 q/ha N – 60 kg/ha P – 60 kg/ha K – 80 kg/ha Transplanting : 8 weeks old seedlings are planted in small beds in well prepared fields. Spacing : Depends upon variety and bulb size and varies from 10 – 15 cm.
Irrigation : Fortnightly irrigation during winter and weekly irrigation during hot weather. Interculture : Post emergence application of Tenoran @ 2 kg/ha. Storage Store leeks at 320 F and 95 to 100 % relative humidity. Packaging üLeeks are commonly trimmed to 12 -inch length, bunched in 3`s depending on diameter, and often placed in polyethylene film bags. üThey are usually packaged in 10 -lb cartons or wirebound crates, holding 10 film bags, each 1 lb. ü Other crates may be packaged with 18 -24 bunches with a net weight up to 30 lb.
SEED CERTIFICATION STANDARDS a) General requirements : i) Isolation : Contaminants Mother bulb production stage F C 5 5 1) field of other Varieties 2) field of same 5 5 Variety b) specific requirements : Factors Max. permitted F C 1) Bulb not 0. 10% 0. 20% Confirming to varietal characters. 2) Off types 0. 10% 0. 20%
SEED STANDARDS : Factors 1) Pure seed (min) 2) Inert Matter(max) 3) Other crop Seeds(max) 4) Weed seeds (max) 5) Germination (min) 6) Moisture (max) 7) For vapour Proof Containers Standards F C 98% 2% 2% 5/kg 10/kg 70% 8% 8% 6% 6%
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