Gladiolus Leaf Spot Diseases. Flowers turn a papery brown and become covered with gray, fuzzy masses. Dust corms before storage with an all-purpose garden fungicide to ensure against insect and disease damage while in storage. Insects. Two of the worst gladiolus diseases are caused by fungi that ... through applying several practical tactics of integrated pest control, such as practicing crop sanitation, planting pest-free corms, washing and hand picking pests from small plantings and scouting the crop weekly and Chrysanthemum aphids (Macrosiphoniella sanborni) and other aphid species are pests on chrysanthemums. Symptoms of this disease can appear on leaves, flowers, stems, and corms. Control Measures: Contact your local horticulture department for the symptoms of these pests and preventive methods. The chrysanthemum aphids are brown to black, which other species range in color from green to pink. University of Florida. Aphids. Insects & Related Pests. Gladiolus (Gladiolus spp.) Pests and Diseases in Gladiolus Cultivation:-The following are the pests and disease found in Gladiolus cultivation.Pests: Thrips and Aphids are common insect pests found in Gladiolus cultivation. Aphids feed by piercing plant tissue and sucking plant sap. Propagate from selected disease‑free plants grown in isolated areas. Like many ornamental flowering plants, leaf spots of gladiolus can be quite troublesome. Pests and Diseases. Gladioli are relatively free of insect pests. Botrytis Soft Rot (Botrytis gladolorum): The disease occurs in the cold storage when the temperature stays below 130-150 C. The disease is characterized by the formation of white-molded, soft, spongy corms. Issues like gladiolus leaf spot, however, may cause decline in the vigor of your plants. Gladiolus Diseases & its Control. are in the Iridaceae family and are native to South Africa, and over 200 species have been described.Gladiolus have become a major crop in the florist industry. Rust fungus of gladiolus flowers that can result in total yield loss (Schubert et al. Academic. Below is a summary of some of those that are more likely to be encountered in no particular order of their threat. The most troublesome pest is the gladiolus thrips. Gladioli ] It causes curving, bending, arching, stunting, yellowing or drying of leaves associated with root and Abstract. Becoming familiar with the signs of gladiolus leaf diseases is important in preventing its spread. plant species go, the gladiolus is relatively free of pests and diseases of epidemic proportions: however, as with all subjects it is vulnerable to certain fungi, virus and insect damage. Figure 3 Store corms in a well-ventilated area in a loose-weave basket, mesh bag or old nylon stocking. A species profile for Gladiolus Rust. Gladiolus (Gladiolus) Plant Health Problems Diseases caused by Fungi: Botrytis leaf, stem, and corm rot, Botrytis spp. Institute of … Legumes (beans, peas, vetch). 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