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        1 - سمیت تنفسی اسانس پوست پرتقال (.Citrus sinensis (L روی حشرات کامل شپشه برنج Sitophilus oryzae و شپشه آردTribolium castaneum
        M. Kabiri Raeis abad B. Amiri Besheli
        According to the high damage of stored pests and adverse effect of chemical pesticide research on the use of secondary metabolites and essential oil of plants are necessary for controlling stored product pest. In this research have been investigated the fumigant toxicit More
        According to the high damage of stored pests and adverse effect of chemical pesticide research on the use of secondary metabolites and essential oil of plants are necessary for controlling stored product pest. In this research have been investigated the fumigant toxicity and persistency of essential oil of orange peel Citrus sinensis (L.)on rice weevil Sitophilus oryzaeL. and flour beetle Tribolium castaneum Herbst. have been investigated The experiment was conducted in a completely randomized design. Essential oil of orange peel was extracted by Clevenger apparatus. The bioassay was done in 40 ml glass Jar at 25±2 ˚C and 65±5% R. H. under dark condition. Filter paper was used as the sources of evaporating facility . Based on data the LC50 values were 264.25 and 171.45µl/Lair on S. oryzae and T. castaneum at 48 h post- treatments respectively. The persistency of  the essential oil on flour beetle (25 days) was significantly more than on the rice weevil (21 days). The LT50 and LT90 were 12.56 and 8.68 days on rice weevil and 15.37 and 11.51 days on flour beetle, respectively. The results showed that the toxicity and persistency of essential oil of orange peel on these pests was acceptable and this oil can be further investigations might be an alternative to chemical pesticides on these product pests. Manuscript profile
      • Open Access Article

        2 - Integrated Management of Soybean (Glycine × max L.Merr.) by Essential Oil of Citrus × sinensis L cv.‘ Osbeck’ Epicarp in Postharvest
        N. Sharma M. Prakash Srivastava
        The essential oil extracted from the epicarp of Citrus sinensis exhibited absolute fungitoxicity against soybean’s fungus as Alternaria alternate, Aspergillus niger, Cercospora kikuchii, Chaetomium spp., Cladosporium cladosporioides, Curvularia lunata, Fusarium ro More
        The essential oil extracted from the epicarp of Citrus sinensis exhibited absolute fungitoxicity against soybean’s fungus as Alternaria alternate, Aspergillus niger, Cercospora kikuchii, Chaetomium spp., Cladosporium cladosporioides, Curvularia lunata, Fusarium roseum, Macrophomina phaseolina, Penicillium italicum, Phomopsisspp. Rhizoctonia solani, and Sclerotium rolfsii. It is very difficult to manage these pathogens by their nature of survival in seed. GC-MS studies of the oil revealed the presence of 10 chemical constituents of them limonene was found to be the major component (84.2 %). The activity of the oil was tested by the poisoned food technique and volatile activity assay. It was found that volatile activity was more toxic than poisoned food technique. The oil was extremely toxic for spore germination and it was found that at 700 ppm spore germination was inhibited in the ten test fungi out of the twelve tested. The essential oil demonstrated wide spectrum fungitoxicty. The seed were treated with essential oil for different concentration. It is evident that the treatment of essential oil inhibited the growth of dominant fungi. In 600 ppm Fusarium roseum, Penicilluim italicum, Rhizocotonia solaniand Sclerotium rolfsii were inhibited but in 700 ppm all tested fungi who is found in untreated seed were inhibited. The scanning electron microscopy (SEM) was done to study the mode of action of oil in case of Aspergillus niger and it was observed that the treatment of oil leads to the distortion and thinning of hyphal wall and the reduction in hyphal diameter and absence of conidiophores. Manuscript profile