logging in or signing up Agronomic Principles seed tech iariajay Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1047 Category: Education License: Some Rights Reserved Like it (0) Dislike it (0) Added: April 07, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Seed technology lecture II: Seed technology lecture IIAgronomic Principles: Agronomic Principles Selection of suitable agronomic region. Crop variety should be adapted to temperature and photo period conditions of that area. Selection of seed plot whose soil texture and fertility should be optimum for the crop concerned and soil should be free from pathogens and weeds. Isolation of seed crops. Preparation of land. Selection of variety Adapted High yielding Possess maximum desirable attributesSlide 3: 6. Seed must be obtained from a authorised official agency with known purity class. While buying the seeds following factors should be carefully examined a. Seed of appropriate class. b. Tags and seals of seed bags are intact. c. Validity period has not expired 7. Seed treatment - given before sowing - it is of three types a. Chemical treatments b. Bacterial inoculation of legumes c. Seed treatments for breaking dormancy due to hard seedSlide 4: 8. Time of planting, seed rate, methods of sowing depth of sowing etc. should be optimum. 9. Roguing / weed control should be timely and adequate 10. Provision for supplementary pollination should be there. 11. Disease and insect control - to avoid like systemic diseases - diseases left their spores on seed coat 12. Nutrition and irrigation in optimum amount. 13. Harvesting. Both time of harvesting and method of harvesting may affect the seed quality so should be appropriate. 14. Drying and storage of seed should be in the prescribed manner.Classes of Quality Seed: Classes of Quality Seed The classes of seeds were clearly defined by the international crop improvement association in 1946 in relation to fodder and forage crops; in 1968 it recommended the adoption of the same system in case of grain crops as well. That is Nucleus Breeder Foundation Registered CertifiedSlide 6: Therefore seeds of improved varieties are produced in several stages, each stage generating a particular class of seed. The various class of seed are recognized in order to Facilitate seed production while maintaining physical and genetic purity. To ensure the continuous supply of quality seed at a reasonable price.Slide 7: The improved seed till some year ago had the following 5 classes Nucleus/ basic seed Breeder seed Foundation seed Registered seed Certified seedSlide 8: But at present registered seed is not produced in India and the foundation seed is also certified by a recognized seed certification agency. Therefore modern seed classification has a 3 broad classes 1. Basic/Nucleus seed 2. Breeder seed 3. Certified seed a. Certified foundation seed/ Foundation seed b. Certified seedSlide 9: Stage I Stage II Nucleus Seed Breeder Seed Foundation Seed Certified Seed Nucleus Seed Breeder Seed Foundation Seed Certified Seed FARMERS FIELD Fig. Seed ClassesSlide 10: Stage II is allowed only when a class of seed is in short supply Basic/ Nucleus Seed: It is the original or first seed variety available with producing breeder or any other recognized breeder of the crop. The seed has 100% physical and genetic purity along with high standards of other quality parameters Nucleus seed is multiplied and maintained by selecting individual pods/spikes/plants and growing individual pod/spike/plant progenies. The process is repeated continuously. That’s why nucleus seed is available in only small quantity.Breeder seed: Breeder seed Breeder seed is the progeny of nucleus seed and is the source for initial and recurring increase of foundation seed. Breeder seed production is directly controlled by the originating plant breeder who developed the variety or any other recognized breeder. Tag color is golden brownFoundation seed: Foundation seed Progeny of breeder seed Foundation seed stage II is only produced when breeder seed is in short supply Bags of foundation seed carry white color tag which contain information about seed qualityCertified seed: Certified seed It is the progeny of foundation seed and its production is so handled as to maintain specified genetic identity and purity standards as prescribed for the crop being certified. Certified seed can also be the progeny of certified seed provided its reproduction does not exceed 3 generation beyond foundation seed stage I.The indian seed Act 1966: The indian seed Act 1966 The Indian seed act was enacted in 1966, and has been in force since oct. 2, 1969 in all over India The seed Act was amended on sept. 9, 1972 (the seed Amendment Act, 1972). This act aims at regulating the quality of seed sold for agricultural purposes through compulsory labeling and voluntary certification. Under compulsory labeling, anyone selling the seed of a notified kind or variety, in the region for which it has been notified, must ensure that 1. seed conform to the prescribed limits of the germination and purity, 2. the seed container is labelled in the prescribed manner and , 3. the label truly represents quality of the seed in the container. Under voluntary certification, anyone interested in producing the certified seed may do so by applying to seed certification agency for the grant of a certificate.Main feature of Seed Act: Main feature of Seed Act Constitution of central seed committee Establishment of a central seed lab Establishment of a state seed lab You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.