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Title: Shelf life of bioagents and longevity of biologically coated pigeonpea seed
Authors: Jagadeesh, V
Patta, Sujatha
Triveni, S
Keshavulu, K
Rani, K Jhansi
Raghavendra, K
Keywords: Bioagents;Biopolymer;Cajanus cajan;Phosporus solubilizing bacteria;Seed coating
Issue Date: Dec-2019
Publisher: NISCAIR-CSIR, India
Abstract: Biological seed coating is a new technique of seed treatment through which biological agents are coated over the seed surface for effective control of seed and soil-borne pathogens. In this study, pigeonpea seed was biologically coated with Pseudomonas fluorescens, Rhizobium spp. and Phosphorus solubilizing bacteria (PSB) using biofriendly polymer and sugar syrup as adjuvants. The shelf life of bioagents and seed quality parameters was studied during six months of storage period. The colony units of Pseudomonas increased with biofriendly polymer either as individual or in consortia with biofertilizers. Six months after treatment, more colony units of Pseudomonas fluorescens were recorded on the surface of biologically coated seed of pigeonpea with biofriendly polymer as an adjuvant compared to sugar syrup. Seeds coated with Pseudomonas and PSB using biofriendly polymer recorded high seed germination and seedling vigour compared to sugar syrup. The observations reveal that there is a possibility of coating seed with biological agents using biofriendly polymer immediately after processing or before packaging without affecting the shelf life of bioagents and seed quality. Thus, the biologically coated pigeonpea seed in advance of cropping season can go a long way in minimizing risk associated with on farm seed treatment.
Page(s): 916-922
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.57(12) [December 2019]

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