INFLUENCE OF SOME PLANT EXTRACTS IN REDUCING SPOILAGE OF STORED POTATOES

H. Muslah, O.; K. Al-Jebori, M.

	INFLUENCE OF SOME PLANT EXTRACTS IN REDUCING SPOILAGE OF STORED POTATOES
The Iraqi Journal of Agricultural Science
Article 1, Volume 37, Issue 2, 2006, Pages 47-52
Authors
O. H. Muslah; M. K. Al-Jebori
Abstract
The study was conducted on potato tubers Solatium tuberosum L. Desiree cv. produced from the spring growing season of 2004 at the field of Department of Horticulture, College of Agriculture. Curing was done after harvest at 15±lC°and 80-85 RH. for 15 days. The tubers were dipped with the following extracts Fenugreek, caraway, okra, ber, and Vapor Gurd wax (V.G) in addition to the control treatment in which tubers were dipped in distilled water. Three concentrations of each extract 25, 50 and 100% were used. Tubers were dipped for 10 or 20 minuets for all treatments then stored in the cold store (4±1C° and 80-85% relative humidity) for three months. After then, they were transferred for reconditioning on 26-31C° and 45-50% relative humidity which represent the marketing stage. The experiment was conducted in a randomized complete block design with four replications. Results indicated that the interaction of okra extract at concentrations, 25, 50 and 100% for 20 minuets, beside caraway extract treatment of 8g/l for 20 minuets and wax treatment were all actively prevented tuber decay. Vapor Gurd (V.G.) treatment significantly decreased tuber decay to 0.34% after 90 days of storage and to 0.52% after the reconditioning period.

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