We'd like to understand how you use our websites in order to improve them. Register your interest. Bakanae disease caused by Fusarium fujikuroi Nirenberg is reported from almost all the rice growing countries of the world and it has emerged as a major problem in Asian countries. The typical and distinguished symptoms of the disease are elongation and rotting of rice plants. Recent changes in climate and cropping patterns have aggravated this disease.

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One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. On rice, G. Seedlings with bakanae in the seedbed are several inches taller than normal plants, thin and yellowish-green. Affected seedlings are very conspicuous, and are scattered throughout the field.

Severely diseased seedlings die before transplanting, and those that survive may die after transplanting. Not all infected seedlings have bakanae symptoms, sometimes they are stunted or they may appear normal. Yamanaka and Honkura classified the following types of bakanae symptoms: elongation; elongation then normal growth; elongation, then stunted growth; stunted growth; and no growth. In crops reaching maturity, infected rice plants show tall, lanky tillers bearing pale-green flag leaves which are conspicuous above the general level of the crop.

Infected plants usually have only a small number of tillers and the leaves dry up one after another from below and die in a few weeks. Occasionally, infected plants survive until maturity but bear only empty panicles. White or pink growth of the fungus may be noticed on the lower parts of the dying plants.

In Japan, panicles are often infected; these are referred to as pink panicles. Pink panicles are also caused by Fusarium roseum. In India, infected plants developed adventitious roots from the lower nodes Thomas, In Japan, the angle of the leaf with the stem was found to be wider in diseased plants than in healthy plants Imura, The symptoms of diseases caused by Fusarium species on other crops are described by Booth Chemical Control Due to the variable regulations around de- registration of pesticides, we are for the moment not including any specific chemical control recommendations.

There have been few estimates of losses due to bakanae disease, caused by G. In in Karnal, Haryana, India, bakanae incidences of 4. Gupta, V. Pest Management Decision Guides English. Pest Management Decision Guides Urdu. Ahmed, F. Plantwise Factsheets for Farmers Urdu. Cookies on Plantwise Knowledge Bank. Close Find out more.

Species Page. On this page:. Related treatment support. Prevention and control. For information on how to access the CPC, click here. Distribution You can pan and zoom the map. Unsupported Web Browser: One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Please consider upgrading your browser to the latest version or installing a new browser.

Benincasa fistulosa round gourd. Cucumis sativus cucumber. Ficus carica common fig. Gossypium cotton. Jatropha curcas jatropha. Leucaena leucocephala leucaena. Manilkara zapota sapodilla. Musa banana. Oryza sativa rice.

Pinus pines. Pinus halepensis Aleppo pine. Saccharum officinarum sugarcane. Solanum lycopersicum tomato.

Solanum melongena aubergine. Sorghum bicolor sorghum. Vigna unguiculata cowpea. Zea mays maize. Fruit - lesions: black or brown. Fruit - lesions: scab or pitting. Leaves - abnormal colours. Leaves - fungal growth. Roots - soft rot of cortex. Seeds - distortion. Seeds - lesions on seeds. Stems - discoloration of bark. Stems - mould growth on lesion.

Stems - stunting or rosetting. Whole plant - damping off. Whole plant - early senescence. Whole plant - seedling blight.

Bakanae disease of paddy. Bakanae disease of rice on rice. Chhetri, P. Fusarium ear rot fungal disease in maize-Zambia Chisunka, B. Bakanae disease of rice-Pakistan Naeem, M. Rice bakanae disease. Show more factsheet.


List of symptoms / signs

It is caused by the fungus Gibberella fujikuroi , the metabolism of which produces a surplus of gibberellic acid. In the plant, this acts as a growth hormone , causing hypertrophy. The afflicted plants, which are visibly etiolated and chlorotic , are at best infertile with empty panicles , producing no edible grains; at worst, they are incapable of supporting their own weight, topple over, and die hence "foolish seedling disease". The earliest known report of bakanae is from ; it was first described scientifically in by Japanese researcher Shotaro Hori, who showed that the causative agent was fungal. The fungus affects rice crops in Asia, Africa, and North America.


Etiology of an emerging disease: bakanae of rice

Symptoms of bakanae first appear about a month after planting. Infected seedlings appear to be taller, more slender, and slightly chlorotic when compared to healthy seedlings. The rapid elongation of infected plants is caused by the pathogen's production of the plant hormone, gibberellin. Plants with bakanae are often visible arching above healthy rice plants; infected plants senesce early and eventually die before reaching maturity.


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Foot rot or Bakanae disease - Fusarium moniliforme Sexual stage: Gibberella fujikuroi Symptoms Infected seedlings in nursery are lean and lanky , much taller and die after some time. In the main field, the affected plants have tall lanky tillers with longer internodes and aerial adventitious roots from the nodes above ground level. The root system is fibrous and bushy. The plants are killed before earhead formation or they produce only sterile spikelets. When the culm is split open white mycelial growth can be seen. Pathogen Fungus produces both macroconidia and microconidia.

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