SEED PRODUCTION IN CUCURBITS R Umarani Assoc Prof
SEED PRODUCTION IN CUCURBITS R. Umarani, Assoc. Prof Seed Sci & Tech
ISOLATION 1000/ 500 m (H) 1500/1000 m June – July Feb- Mar Flowering S. . A…. . 45 x 45 cm P. . Y R. . 2. 5 x 2 m Seed rate R. Umarani, Assoc. Prof Seed Sci & Tech Volunteer Maturity Index Seed extraction
Flowering • Mostly monoecious • Few dioecious • What is the type of pollination ? • Pollination is by Insects R. Umarani, Assoc. Prof Seed Sci & Tech
Female flower Male flower R. Umarani, Assoc. Prof Seed Sci & Tech
ISOLATION • • • Other varieties Same variety ( Not conforming To IMSCS) Wild cucurbit species Musk melon long melon Pumpkin squashes R. Umarani, Assoc. Prof Seed Sci & Tech
2. 5 Seed rate Kg/ha 2. 5 R. Umarani, Assoc. Prof Seed Sci & Tech 1. 0
A. . S. . Y P. . • Ethrel 200 -250 ppm at 2 leaf stage and 4 days later • For what purpose ? • To increase female flower R. Umarani, Assoc. Prof Seed Sci & Tech R. .
12: 24: 12 Fertilizer NPK g/pit 9: 15: 9 6: 12: 6 R. Umarani, Assoc. Prof Seed Sci & Tech 6: 12: 6
Rouging stages Vegetative – Isolation, volunteer Flowering - Off types Maturity - Isolation, Offtypes R. Umarani, Assoc. Prof Seed Sci & Tech
Rouging stages Vegetative – Isolation, volunteer Flowering - Off types, Obj. weeds Maturity - Isolation, Offtypes Obj. weeds R. Umarani, Assoc. Prof Seed Sci & Tech
Maturity Index 1/3 red Drying 1/3 red Ashy coating R. Umarani, Assoc. Prof Seed Sci & Tech Orange brown
Seed Extraction Manual Separation Manual Scooping R. Umarani, Assoc. Prof Seed Sci & Tech Manual Scooping
Hand Picking 15% 16/64” round 1. 0% R. Umarani, Assoc. Prof Seed Sci & Tech Seed grading and Recovery BSS 4 14% Hand Picking 30 % 16/64” round 1. 0%
200 to 250 kg per ha. Seed yield 200 to 250 kg per ha. 120 to 150 kg per ha. R. Umarani, Assoc. Prof Seed Sci & Tech 120 to 150 kg per ha.
• IMSCS -Ash gourd / Pumpkin Field Standards FS CS Off types 0. 10 0. 20 - - Pure seed 98. 0% Inert matter 2. 0% Other crop seeds None Weed plants Seed Standards ODV - - Germination 60% Moisture 6. 0% R. Umarani, Assoc. Prof Seed Sci & Tech
IMSCS -Ribbed gourd Field Standards FS CS Off types 0. 10 0. 20 - - Pure seed 98. 0% Inert matter 2. 0% Other crop seeds None Weed seeds None ODV None 5/Kg Germination 60% Moisture 6. 0% Weed plants Seed Standards R. Umarani, Assoc. Prof Seed Sci & Tech 10/Kg
OBJECTINABLE… IMSCS –Bitter gourd Field Standards FS CS Off types 0. 10 0. 20 Obi. . Weed plants None Bhat karela M. cochinensis M. dioica Seed Standards Pure seed 98. 0% Inert matter 2. 0% Other crop seeds None Obj. Weed seeds None ODV None 5/Kg Germination 60% Moisture 6. 0% R. Umarani, Assoc. Prof Seed Sci & Tech Momordica balsamina 10/Kg Jangli kerala
OBJECTINABLE… IMSCS -Snake gourd Field Standards FS CS Off types 0. 10 0. 20 Objectionable Weed plants Seed Standards None Pure seed 98. 0% Inert matter 2. 0% Other crop seeds None Objectionable Weed seeds None ODV 5/Kg 10/Kg Germination 60% Moisture 6. 0% R. Umarani, Assoc. Prof Seed Sci & Tech Trichosanthes palmata T. Lobata T. cucumerina Jangli chachinda
R. Umarani, Assoc. Prof Seed Sci & Tech
Why is foliar spray given to cucurbits during two and four leaf stage ? Does Musk melon cross with long melon ? 16/64 round perforated is used to grade which crop seed ? Objectionable weed is listed in IMSCS for pumkin and ashgourd ? R. Umarani, Assoc. Prof Seed Sci & Tech
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