Ginting, Cipta and Prasetyo, Joko and Maryono, Tri and Safitri, Mila and Ayuningsih, Ika (2017) PRELIMINARY RESEARCH ON THE EFFICACY OF BIOLOGICAL AGENTS INDUCING RESISTANCE IN MAIZE PLANTS TO CONTROL DOWNY MILDEW AND LEAF BLIGHT. In: ISAE International Seminar 2017, 9-12 August 2017, Bandar Lampung. (In Press)

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PRELIMINARY RESEARCH ON THE EFFICACY OF BIOLOGICAL AGENTS INDUCING RESISTANCE IN MAIZE PLANTS TO CONTROL DOWNY MILDEW AND LEAF BLIGHT Cipta Ginting1), Joko Prasetyo1), Tri Maryono1), Mila Safitri2), and Ika Ayuningsih2) Instructors1) and Alumni2) of Department of Plant Protection, University of Lampung Jl. Prof. Sumantri Brojonegoro No. 1 Bandar Lampung 35145, Indonesia E-mail: ABSTRACT The main problems in maize cultivation in Indonesia include downy mildew caused by Peronosclerospora maydis and leaf blight due to Drechslera maydis. The objectives of the study were to isolate fungi having potential to induce systematic resistance and to test its efficacy to control the intensity of maize diseases. Soils samples were taken from the rizosphere of maize plants that did not show symptoms of any disease. Each sample was placed in a plastic bag and carried in a cooler to the laboratory. Fungi were isolated from the soil by using potato dextrose agar medium with rosebengal (PDA-R). The experiment was repeated once. Maize seeds were mixed with Trichoderma culture of respective isolate then were planted in the soil in polybags. The plants were then inoculated artificially with suspension of P. maydis conidia and natural inoculation with P. sorghi and D. maydis. In the first test, the plants showed symtoms of leaf blight, but not downy mildew symptoms. The treatment had no significant effect on leaf blight or plant height. In the second test, the plant showed symptoms of both downy mildew and leaf blight. In the Pioneer variety, the treatment did not significantly affect the incidence of downy mildew, while in the local IR varieties three Trichoderma isolates decreased disease incidence 21 days after inoculation. The treatment had no significant effect on the severity of leaf blight. In local IR varieties, three Trichoderma isolates increased plant height, while in Pioneer variety the treatment had no significant effect. Keywords: maize; induced systemic resistance; downy mildew; maize leaf blight; Trichoderma

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > Q Science (General)
S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Proteksi Tanaman
Depositing User: Prof Cipta Ginting
Date Deposited: 03 Nov 2017 12:53
Last Modified: 03 Nov 2017 12:53

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