EFFECT OF SEED COATING WITH SYNTHETIC POLYMER AND CHEMICALS ON SEED QUALITY AND STORABILITY OF RICE (Oryza sativa L.)
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Date
2017-07
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CSKHPKV, Palampur
Abstract
The present investigation was undertaken to study the effect of seed coating on seed quality of rice during storage by evaluating different seed quality parameters in Seed Technology Laboratory. The experimental material consisted HPR-1068 variety of paddy, seeds of which were stored for 12 months after applying nine different treatments along with untreated control in three replications. The treatments comprised of T0 - Untreated control, T1 - Polymer (Polykote) @ 3 ml/kg of seed diluted in 5 ml of water, T2 - Flowable Thiram @ 2.4 ml/kg of seed, T3 - Polymer + Flowable Thiram @ 2.4 ml/kg of seed, T4 - Vitavax 200* @ 2 g/kg of seed, T5 - Polymer + Vitavax 200* @ 2 g/kg of seed, T6 - Imidachloprid (Gaucho) @ 4 ml/kg of seed, T7 - Polymer + Imidachloprid (Gaucho) @ 4 ml/kg of seed, T8 - Polymer + Flowable Thiram @ 2.4 ml/kg of seed + Imidachloprid (Gaucho) @ 4 ml/kg of seed and T9 - Polymer + Vitavax 200* @ 2 g/kg of seed + Imidachloprid (Gaucho) @ 4 ml/kg of seed. The laboratory observations were evaluated in Completely Randomized Design (CRD) during December 2015 - December 2016. At the end of stoarge period (12 months), recorded data revealed that, irrespective of seed coating, seed deteriorated and the vigour declined with increased fungal infection and insect infestation. T5 - Polymer + Vitavax 200* @ 2 g/kg of seed was found significantly superior for all seed quality parameters viz., germination (%) - first count (%), final count (%), seedling length (cm), seedling dry weight (g), seedling vigour index-I, seedling vigour index-II, electrical conductivity (m mho/cm/g) over T0 - untreated control.
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