A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan

Brown spot (Bipolaris oryzae) disease is one of the most important diseases that cause substantial quantitative and qualitative losses in rice yield in northern region Peninsular Malaysia. The present study that was carried out in order to identify the disease intensity and characteristics of its ca...

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Main Author:	Mohd Dahan, Muhamad Ariff Izzuddin
Format:	Student Project
Published:	Faculty of Plantation and Agrotechnology 2017
Subjects:	Agricultural ecology (General) Pests and diseases
Online Access:	http://ir.uitm.edu.my/id/eprint/18896/

id	uitm-18896
recordtype	eprints
spelling	uitm-188962019-04-07T01:46:54Z http://ir.uitm.edu.my/id/eprint/18896/ A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan Mohd Dahan, Muhamad Ariff Izzuddin Agricultural ecology (General) Pests and diseases Brown spot (Bipolaris oryzae) disease is one of the most important diseases that cause substantial quantitative and qualitative losses in rice yield in northern region Peninsular Malaysia. The present study that was carried out in order to identify the disease intensity and characteristics of its causal pathogen in the rice fields at Perak, Kedah, and Penang. The survey of the rice brown spot disease incidence was conducted in 3 fields in northern region Peninsular Malaysia during ripening stage which consisted of 3 states. The results that obtained from the survey showed that the disease incidence and severity were different from low to high on the different rice fields which was depending on different rice variety and agro-ecological. The disease incidence of rice brown spot in 3 different states varied from 50.46% to 55.27%. The highest mean of disease incidence was recorded in Kedah which was 55.27% and the lowest was recorded in Penang which was 50.46%. Moreover, the brown spot disease severity revealed the same trend as the disease incidence in 3 different states. The highest mean of disease severity was recorded in Kedah which was 36.30% while the lowest disease severity was recorded in Penang which was 25.63%. The brown spot disease pathogen was isolated to identify its characteristics on Potato Dextrose Agar (PDA) medium after 7 days incubation period. After 7 days, the fungus of the rice brown spot disease appeared was black in colour, cottony texture and irregular margin. The result for conidia observation was done by using the compound microscope which to observe the microscopic characteristics of the fungus. Faculty of Plantation and Agrotechnology 2017 Student Project NonPeerReviewed Mohd Dahan, Muhamad Ariff Izzuddin (2017) A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
topic	Agricultural ecology (General) Pests and diseases
spellingShingle	Agricultural ecology (General) Pests and diseases Mohd Dahan, Muhamad Ariff Izzuddin A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
description	Brown spot (Bipolaris oryzae) disease is one of the most important diseases that cause substantial quantitative and qualitative losses in rice yield in northern region Peninsular Malaysia. The present study that was carried out in order to identify the disease intensity and characteristics of its causal pathogen in the rice fields at Perak, Kedah, and Penang. The survey of the rice brown spot disease incidence was conducted in 3 fields in northern region Peninsular Malaysia during ripening stage which consisted of 3 states. The results that obtained from the survey showed that the disease incidence and severity were different from low to high on the different rice fields which was depending on different rice variety and agro-ecological. The disease incidence of rice brown spot in 3 different states varied from 50.46% to 55.27%. The highest mean of disease incidence was recorded in Kedah which was 55.27% and the lowest was recorded in Penang which was 50.46%. Moreover, the brown spot disease severity revealed the same trend as the disease incidence in 3 different states. The highest mean of disease severity was recorded in Kedah which was 36.30% while the lowest disease severity was recorded in Penang which was 25.63%. The brown spot disease pathogen was isolated to identify its characteristics on Potato Dextrose Agar (PDA) medium after 7 days incubation period. After 7 days, the fungus of the rice brown spot disease appeared was black in colour, cottony texture and irregular margin. The result for conidia observation was done by using the compound microscope which to observe the microscopic characteristics of the fungus.
format	Student Project
author	Mohd Dahan, Muhamad Ariff Izzuddin
author_facet	Mohd Dahan, Muhamad Ariff Izzuddin
author_sort	Mohd Dahan, Muhamad Ariff Izzuddin
title	A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
title_short	A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
title_full	A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
title_fullStr	A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
title_full_unstemmed	A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan
title_sort	study of rice brown spot disease occurrence in northern region peninsular malaysia / muhamad ariff izzuddin mohd dahan
publisher	Faculty of Plantation and Agrotechnology
publishDate	2017
url	http://ir.uitm.edu.my/id/eprint/18896/
first_indexed	2023-09-18T23:01:26Z
last_indexed	2023-09-18T23:01:26Z
_version_	1777418199602561024

A study of rice brown spot disease occurrence in northern region Peninsular Malaysia / Muhamad Ariff Izzuddin Mohd Dahan

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