أمراض بذور الفول السوداني بالتركيز علي فطر Macrophomina phaseolina

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Date
2015-06-16
Authors
حمد شمو شرف الدين, سارة
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UOFK
Abstract
Seeds of four varieties of groundnut (Arachis hypogaea L.) were obtained from Sinnar Seed Propagation Administration. There were Sodari, Ghobeish, Barberton and Medani. They were tested for seed-borne pathogens. The result revealed the presence of Macrophomina phaseolina in cv Medani (0.5%-52 %) using agar methods. Other detected fungi were Aspergillus flavus (36%) Fusarium spp (24 %), Aspegillus niger (20 %) and Rhizopus spp (4 %).The physiological studies revealed that the optimum temperature for the growth of Macrophomina phaseolina was 30°C - 35°C, and the suitable medium for growth of the fungus was PDA. The percentage of rotted seeds were (19%) in Sodari, (23 %) in Ghobeish, (6 %) in Barberton and (18%) in Medani. Two chemicals were used to control the fungus: Benlate and Tilt. Benlate completely inhibited the growth of the fungus, while Tilt reduced its growth.
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