EFFECT OF SEED COATING ON SEED LONGEVITY IN RICE (Oryza sativa L.)

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dc.contributor.advisorDhiman, K.C.
dc.contributor.authorSingh, Amandeep
dc.date.accessioned2019-08-01T05:20:10Z
dc.date.available2019-08-01T05:20:10Z
dc.date.issued2019-07
dc.description.abstractThe present investigation was undertaken to evaluate the effect of seed coating for seed longevity and to identify the effective seed coating treatment for enchancing seed longevity of rice by evaluating different seed quality parameters in Seed Technology Laboratory, CSK HPKV, Palampur. The experimental material consisted of HPR-1068 variety of rice, seeds of which were coated during December 2015 and nine different treatments along with untreated control in three replications were stored in Completely Randomized Design (CRD) for thirty six months (December 2015 to December 2018) after packing in HDPE (high density polyethylene) interwoven bags. For the present study, the evaluation of seed quality parameters was made at bimonthly intervals for twelve months (25th to 36th month) i.e from January 2018 to December 2018. The treatments comprised of T1 - untreated control, T2 - polymer (Polykote) @ 3 ml/kg of seed diluted in 5 ml of water, T3 - flowable thiram @ 2.4 ml/kg of seed, T4 - polymer + flowable thiram @ 2.4 ml/kg of seed, T5 - vitavax 200 @ 2 g/kg of seed, T6 - polymer + vitavax 200 @ 2 g/kg of seed, T7 - imidacloprid (Gaucho) @ 4 ml/kg of seed, T8 - polymer + imidacloprid (Gaucho) @ 4 ml/kg of seed, T9 - polymer + flowable thiram @ 2.4 ml/kg of seed + imidacloprid (Gaucho) @ 4 ml/kg of seed and T10 - polymer + vitavax 200 @ 2 g/kg of seed + imidacloprid (Gaucho) @ 4 ml/kg of seed. At the end of storage period (36 months), recorded data revealed that irrespective of seed coating, seed deteriorated and the vigour declined probably with increased fungal infection and aging of seed. On the basis of present study, it can be concluded that T6 - polymer + vitavax 200 @ 2 g/kg of seed and T4 - polymer + flowable thiram @ 2.4 ml/kg of seed were found significantly superior for all seed quality parameters viz., germination (%) - first count (%), final count (%), speed of germination, seedling length (cm), seedling dry weight (g), seedling vigour index-I, seedling vigour index -II, electrical conductivity (m mho/cm/g) and field emergence (%) over T1 - untreated control. The treatments, polymer coating @ 3 ml/kg of seed + vitavax 200 @ 2 g/kg of seed and polymer coating @ 3 ml/kg of seed + flowable thiram @ 2.4 ml/kg of seed could maintain the germination percentage above Indian Minimum Seed Certification Standards (IMSCS) upto 32 months of storage and thus these two treatments can be used for long term storage of paddy seeds.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810118210
dc.keywordsRiceen_US
dc.language.isoenen_US
dc.pages86en_US
dc.publisherCSKHPKV, Palampuren_US
dc.subSeed Science and Technologyen_US
dc.subjectnullen_US
dc.themeSeed longevity in rice.en_US
dc.these.typeM.Scen_US
dc.titleEFFECT OF SEED COATING ON SEED LONGEVITY IN RICE (Oryza sativa L.)en_US
dc.typeThesisen_US
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