Vol. 10, Issue 12 (2021)

Author(s):
AB Narayanareddy, Rame Gowda, YG Shadakshari, S Rajendra Prasad, BC Channakeshava, Balakrishna Gowda and K Bhanuprakash

Abstract:
A laboratory experiment was conducted to study the influence of seed treatment chemicals and packing materials on storage potential of sunflower hybrids at the Department of Seed Science and Technology, Gandhi Krishi Vignana Kendra, University of Agricultural Sciences, Bangalore during August 2010 to July 2011. Freshly harvested seeds of sunflower hybrids viz., KBSH-41, KBSH-44 and KBSH-53 were treated with Thiram 75% WP. @ 2.5g per kg, Imidacloprid-powder form @ 5g/kg, Imidacloprid-liquid form @ 5 ml/ kg of seed and untreated seeds used as control. Then they were packed in cloth bag, super grain bag and polypouches and stored under ambient conditions of Bangalore. The results revealed that KBSH-44 hybrid maintained prescribed germination standards (70.0%) up to ten months when compared to KBSH-41 (eight months) and KBSH-53 (seven months) and seeds packed in polypouches maintained prescribed minimum certification standards of germination up to nine months. Seed treated with Imidacloprid, powder form (WP) @ 5g/kg or Thiram @ 3 g /kg could be stored up to nine months with the prescribed germination of minimum seed certification standards. Seedling vigour index was superior in KBSH-44 (1478) compared to lowest registered in KBSH-53 (369) at the end of storage. Among packing materials, polypouches recorded higher seedling vigour index followed by super grain bag at the end of storage period. Besides, KBSH-44 hybrid recorded minimum seed infection (18.36%) and seeds treated with Thiram showed significantly lower infection (23.59%).