PENGARUH POLA HARI HUJAN TERHADAP PERKEMBANGAN PENYAKIT GUGUR DAUN CORYNESPORA PADA TANAMAN KARET MENGHASILKAN

Damiri, Nurhayati and Situmorang, Aron (2008) PENGARUH POLA HARI HUJAN TERHADAP PERKEMBANGAN PENYAKIT GUGUR DAUN CORYNESPORA PADA TANAMAN KARET MENGHASILKAN. J.HPT Tropika, 8 (1). pp. 63-70. ISSN 1411-7525

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      Abstract

      Effect of weather on the development of leaf fall disease in th yielding estate. This research was conducted in PTP VII Bergen Lampun from July to August 2005 and 2006 (new leaves period). This research was carried out using survey and experiment methods. Parameters observed in the research were persentages of leaf stage, the number of leaf fall per m2 caused by Corynespora cassiicola and amount of spore distributed in air, daily rainfall amount and numbers of rain days. Results of study showed that the pattern of rainfall and number of raindays affected the development of plant’s new leave and leaf fall disease caused by Corynespora. The amount of spores ditributed in the air was relatively higher in 2005 observation period compared to 2006 one. The pattern of rainfall and number of rain days also affected the disease severity which was higher in 2005 compared to 2006. Epidemy was occurred when lower rainfall amount taking place intermittently with sunny days in the period of new leaves formation.

      Item Type: Article
      Uncontrolled Keywords: Corynespora leaf fall disease, rubber, rainfall, numbers of raindays.
      Subjects: S Agriculture > S Agriculture (General)
      S Agriculture > SB Plant culture
      Divisions: Faculty of Agriculture > Department of Plant Pests and Diseases
      Depositing User: Dr. Nurhayati Damiri
      Date Deposited: 23 Jun 2012 18:51
      Last Modified: 10 Sep 2012 23:57
      URI: http://eprints.unsri.ac.id/id/eprint/1046

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