seed treatment & seed testing

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WELCOME TO S.G.C.A.R.S., JAGDALPUR :

WELCOME TO S.G.C.A.R.S., JAGDALPUR

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TOPIC – seed testing & seed treatment PRESENTATE BY- VIPIN KUMAR PANDRY & Vijay anant & Bhupendra sing rana B.Sc. (agriculture) 3 rd year 1 st sem.

INTRODUCTION:

INTRODUCTION Seed testing is required to assess the seed quality attributes of the seed-lots which have to be offered for sale. These quality attributes are seed moisture content, germination and vigour, physical and genetic purity, freedom from seed-borne diseases and insect infestation.

Objectives of Seed Testing 1. To determine their quality, that is, their suitability for planting 2. To identify seed quality problem and their probable cause 3. To determine the need for drying and processing and specific procedures that should be used. 4. To determine if seed meets established quality standards or labeling specifications. 5. To establish quality and provide a basis for price and consumer discrimination among lots in the market.:

Objectives of Seed Testing 1. To determine their quality, that is, their suitability for planting 2. To identify seed quality problem and their probable cause 3. To determine the need for drying and processing and specific procedures that should be used. 4. To determine if seed meets established quality standards or labeling specifications. 5. To establish quality and provide a basis for price and consumer discrimination among lots in the market.

Seed Testing Procedures for Quality Assessment::

Seed Testing Procedures for Quality Assessment: Receipt and registration of seed samples: The samples received in the laboratory should be entered in a pre -printed register or forms and assigned a test number to be used in all the analysis. 2. Moisture test: The samples intended for a moisture test requires special attention, because it may otherwise either lose or may absorb moisture from outside. 3. Working sample: After entering the samples the next step is to prepare the working sample(s) or various tests. 4. Routine Tests: In a seed testing laboratory, germination test, purity test, test for other seeds and moisture test are known as routing test. 5. Reporting of results: After the tests have been completed the results are reported on a printed form, known as, seed analysis certificate in the requisite manner

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SEED TREATMENT Seed treatment refers to the application of fungicide, insecticide or both to the seeds to disinfect(deep seated) and disinfest (over seed coat) them from seed borne or soil borne pathogenic organisms and storage insects. It also refers to subjecting the seed to solar energy exposure or immersion in conditional water. The concept of seed treatment is the use and application of biological and chemical agents that control or contain primary soil and seed borne infestation of insects and diseases .

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Benefits of Seed Treatment: 1) Prevents spread of plant diseases 2) Protects seed from seed rot and seedling blights 3) Improves germination 4) Provides protection from storage insects 5) Controls soil insects. UNTREATED TREATED Seed rate 5 Kg./ acre Cruiser 5gm /acre water volume 10 ml /kg.seed Maize

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Chemicals used for Seed treatment A) Mercurial Compounds Organo mercurials – used for small grains, flax cotton, and safflower. Eg : Phenyl Mercuric acetate (PMA) Methoxy ethyl Mercury chloride (MEMC) Ethyl Mercuric chloride (EMC) 2. Inorganic mercurials : Are limited to mercuric chloride, mercurious chloride and mercuric oxide. These materials are used to treat the seeds, roots, tubers and vegetable crops. B) Non Mercurials Organic Non Mercurials : such as thiram and captan are widely used. Eg : Thiram , Captan , Carbendazim , Metalaxyl . 2. Inorganic Non Mercurials : Copper carbonate, Copper sulphate , Cuprous oxide Copper carbonate and Copper sulphate are used on wheat for prevention of bunt diseases. Cuprous oxide prevents seed decay and damping of in vegetables.

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Precautions in seed treatment: 1. Extreme care is required to ensure that the treated seed is never used for animal or human consumption. 2. Care must be taken to treat the seeds at correct dosage. 3. Do not treat the seed with high moisture content as it may be injured when treated with some of the concentrated liquid products.

Thank You:

Thank You

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