EFFECT OF BIOTIC AND ABIOTIC FACTORS ON QUALITY OF STORED OKRA SEED

S Bilkis, M F Ahmed, M M Hossain, M M H Chowdhury and M D Hossain
Journal of the Sylhet Agricultural University, Volume 3, Issue 1, 2016, Pages 9-17

Abstract:

Okra (Abelmoschus esculentus L. Moench) is an important and famous vegetable of Bangladesh grown commonly in the kharif season. An experiment was conducted at the Seed Pathology Center (SPC), Bangladesh Agricultural University (BAU), Mymensingh during the period from 12 May to 10 July 2015 to evaluate the effect of biotic and abiotic factors on quality of okra seed for 60 days in three types of packing materials (Tin pot, Poly bag and Gunny bag). Okra seeds were stored in tin pot, poly bag and gunny bag with initial moisture of 14.0 %, 14.6% and 15.3 %, respectively in ambient condition for 60 days of storage. Moisture content of the seeds of tin pot was found increased significantly to 14.0 % from initial moisture content 14.8 %. Seed moisture content of poly bag and gunny bag, also increased from initial moisture content 14.6 to 15.6 % and 15.3 to 17.3 %. This increase of seed moisture content was closely related to room temperature and relative humidity. The rate of seed deterioration in gunny bag and poly bag paralleled the level of invasion by storage fungi and insect. Rhizopus spp. was found 7.9 and 6.1 % in the seeds of Gunny bag and poly bag and it was 5.4 % in tin pot followed by prevalent of Penicillium spp. During storage period the okra seeds were infected by mite. Infestation was found higher in the seeds of gunny bag and poly bag (40 % and 21 %) and lower in the seeds of tin pot (12 %). The present results revealed that the storage of okra seed in tin pot is better than jute and poly bag.

Keywords:

Okra seed, biotic, abiotic, storage, polybag, gunny bag, tin pot, moisture


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S Bilkis, M F Ahmed, M M Hossain, M M H Chowdhury and M D Hossain. 2016. EFFECT OF BIOTIC AND ABIOTIC FACTORS ON QUALITY OF STORED OKRA SEED, Journal of the Sylhet Agricultural University 3(1): 9-17.