Martanto Martosupono
Fakultas Pertanian Universitas Kristen Satya Wacana

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

Penyakit Karat Putih Krisan di Sekitar Bandungan, Ambarawa Haryono Semangun; Wikan Radityo; Lilik Nurcholis; Martanto Martosupono; Djoko Murdono
Jurnal Perlindungan Tanaman Indonesia Vol 16, No 2 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11729

Abstract

Chrysanthemum white rust (CWR) caused by Puccinia horiana creates severe losses on chrysanthemum (Chrysanthemum grandiflorum, Dendranthema grandiflora) in plastic houses in Bandungan (750–1050 masl.) and its surrounding. In lower elevations higher disease intensities were found around roof leakages and ventilations. In Sumowono (1000–1050 masl.) the disease was spread evenly in plastic houses. Teliospores of P. horiana develop in form of basidia (promycelia) at midnight which directly form basidiospores (sporidia). Spreading of basidiospores occur at 2 to 4 in the morning, especially at 3 a.m. Infection takes place through lower or upper surface of the leaves, as the two sides have stomata. Incubation time in this trial is 8–11 hours. Vegetative as well as generative phase of chrysanthemum have the same susceptibility. Many farmers applied inappropriate fungicides in controlling CWR. It is recommended to apply carbendazim as systemic fungicide alternated by protectant fungicides as mancozeb.