Abstract
Ripe and wholesome tomato fruits of Padma 108 F1 and Platinum 701 F1 were stored in powders and ashes of Tridax procumbens and Chromolaena odorata by complete submergence and surface coating treatments in a completely randomised set-up. Fruits were kept in corrugated cardboard boxes at 26.5 0C and RH 83 %. Disease incidence was assessed every 5 days in storage. The days taken for 50 % of the tomato fruits to retain marketable qualities were determined. All tomato fruits treated with the plant materials showed significantly lower disease incidences (p ≤ 0.05) than the untreated fruits. Submerging Padma fruits in ash of C. odorata produced a shelf-life of 106 days while for Platinum fruits, submerging in powder of T. procumbens produced the longest shelf-life of 155 days. Untreated fruits of Padma and Platinum had shelf lives of 31 days and 53 days respectively. Padma fruits completely submerged in the powders of T. procumbens, C. odorata and surface coated with the powder of C. odorata retained 50 % marketability at Day 61, and 50 % of Platinum tomatoes submerged in the powder of C. odorata remained marketable at Day 116. The preservative effects of the powders and ashes of the two botanicals in tomato fruits could probably be accounted for by a combination of moisture-absorbent properties, restraining airflow, high pH and the presence of phytochemicals.
Published Version
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