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Yellows disease of gladiolus and hyacinth in the Netherlands. 1) Additional data on field control with systemic insecticides and effects of treating corms and bulbs in hot water. 2) Detection of mycoplasma-like bodies in the phloem of diseased hyacinth leaves


, : Yellows disease of gladiolus and hyacinth in the Netherlands. 1) Additional data on field control with systemic insecticides and effects of treating corms and bulbs in hot water. 2) Detection of mycoplasma-like bodies in the phloem of diseased hyacinth leaves. Acta Horticulturae (36): 303-311

A reduction in the rate of spread of the agent inciting aster yellows was obtained by treating gladiolus plants with the systemic insecticides demeton-S-methyl and phorate. Infected gladiolus corms and hyacinth bulbs were cured by hot-water treatment at 50 deg C for 1 h. Hot-water treatment of healthy gladiolus corms cvs Life Flame and Spring Song did not reduce their yield; the Oscar was apparently less tolerant and yield reductions of 20-30% were observed in different treatments.

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