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Crop Diseases

Leaf Spot/Blight of Rice

It is a common disease in the rice growing countries of South Eastern Asia and also in Japan. It cause losses at three distinct phases. Firstly, poor germination of infected seeds. Secondly, leaf infection during seedling stage. Thirdly, shriveling and poor setting of seeds due to general weakening of the …

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Tikka Disease Of Groundnut

This is the most important fungal disease of groundnut. Losses due to this disease may go up to 15-50% and 70%, if associated with rust (Puccinia arachidicola).  Symptoms :All the aerial parts of the plants are attacked. In case of attack by Cercosporidium personatum, the leaf spots are circular (1-6 …

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Root-Knot Nematode

Root-knot nematodes are plant-parasitic nematodes from the genus Meloidogyne. They exist in soil in areas with hot climates or short winters. About 2000 plants are susceptible to infection by root-knot nematodes and they cause approximately 5% of global crop loss (Sasser and Carter, 1985). Root-knot nematode larvae infect plant roots, …

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Ear Cockle Disease Of Wheat

  Anguina tritici was the first plant parasitic nematode to be described in the literature in 1743. It causes a disease in wheat and rye called “ear-cockle” or seed gall. Originally found in many parts of the world but has been eradicated from the western hemisphere. Currently in north Africa …

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Sugarcane Mosaic

Sugarcane mosaic virus (SCMV) is a plant pathogenic virus of the family Potyviridae. The Potyviridae are a family of plant viruses. They are flexuous filamentous rod-shaped particles. Their genome is composed of positive-sense RNA which is surrounded by a protein coat made up of a single viral encoded protein called …

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Tobacco Mosaic

Tobacco mosaic virus (TMV) is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns (mottling and discoloration) on the leaves (hence the name). TMV was the first virus to be discovered. Although it was known from …

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Potato Mosaic

  Wild potato mosaic virus (WPMV) is a plant pathogenic virus of the family Potyviridae.The Potyviridae are a family of plant viruses. They are flexuous filamentous rod-shaped particles. Their genome is composed of positive-sense RNA which is surrounded by a protein coat made up of a single viral encoded protein …

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Soft Rot of Potato

Bacterial soft rot is the most serious causes of potato losses in storages. Soft rot bacteria infect potato tubers which have been damaged by mechanical injury or the presence of other diseases. Bacterial soft rot develops much faster when potatoes are wet. Tubers may be wet when put into storage, …

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Bacterial Blight of Rice

Symptoms:The disease may induce either wilting of leaf blight. Wilting commonly appears sporadically in the field causing serious damage, and is known as “Kresek”. This is due to early systemic infection of from infected seeds and the bacterium brought in contact with the germinating seedlings. It commonly occurs within 3-4 …

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