EFFECT INFLUENCE OF SOME PLANTS EXTRACTS ON THE QUALITE NATURAL STORABILITE OF POTATO

Abstract

This study was conducted on potato tubers solanum tuberosum L. Desiree cv. in spring season for the growing season of 2002. The tubers were planted and stored in the field and stores of Horticulture Department, Agriculture College, Baghdad University. Curing was done on 15±1C◦ and 80-85% relative humidity for 15 days. Tubers were dipped with the following extracts: Fenugreek, Caraway, Okra, Ber, and (V.G) Vapor Gourd wax in addition to the control treatment in which tubers were dipped with water. Three concentrations of each extracts were used. Tubers were dipped for 10 or 20 minuets for all treatment then sotred in the cold store on 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 (3kg in mesh plastic bags) for each replicate Means were compared according to LSD-test with 5% significant level. The results could be summarized as follows Caraway extract to prevent reduced sprouting to 8/gm/1 with 20 minuets in the storage but the sprouting percentage in the and reconditioning become 0.33 in the same Treatment. As to effect treatment okra extract 100% with 20 minuets given less percentage weight loss 0.67% in the end storage and continue to end reconditioning.