Tobacco leaf curl virus Symptoms and Management
Tobacco leaf curl virus Causal organism: Tobacco leaf curl virus. Symptoms of Tobacco leaf curl virus 1. There is no change in the color of the infected leaves. …
Tobacco Mosaic Virus: Symptoms and Management
Causal organism: Tobacco Mosaic Virus (TMV). Origin Adlof Mayer at first reported this disease in 1886. In 1892 Iwanowski demonstrated that the tobacco mosaic virus would pass through a …
Basic 3 sectors in agribusiness system
The Agribusiness system comprises the three sectors. We’ve to know these 3 sectors are discussed below: 3 sectors in agribusiness system The agricultural input sector The production sector The processing-manufacturing …
Agribusiness system concept with background
Agribusiness system concept Agriculture has developed into agribusiness and has become a vast and complex system that reaches far beyond the farm to include all those who are involved in …
Maturity of fruits and vegetables
Maturity of fruits and vegetables (physiochemical changes and ripening): Harvest maturity has a great influence on the post-harvest quality of fruits and vegetables. For example, Mango fruits harvesting at mature …
Symptoms and Management of red rust of tea
Symptoms and Management of Red Rust of tea Causal organism: Cephaleurous parasiticus (Algal disease). Symptoms of Red Rust of tea Rusty lesions developed on the leaves. They are roundish in shape. Reddish …
Symptoms and Management of Fruit Rot of Betel nut
Symptoms and Management of Fruit Rot of Betel nut Causal organism: Phytophthora palmivora. Symptoms of Fruit Rot of Betel nut 1. The first symptoms are watersoaked lesions on the nut surface …
Smut of Onion: Symptoms and Management (Control Measures)
Smut of Onion Causal organism: Urocystis magica (syn.= U. cepulae) and U. colchici. Origin: Smut was first observed on the onion in the Connecticut River valley of the USA in 1869. Symptoms of Smut …
Symptoms and Management of Purple blotch of Onion and Garlic
Symptoms and Management Alternaria blight/Leaf blotch/Purple blotch of Onion and Garlic Causal organism: Alternaria Porri . Origin The disease was first reported by Ajrekar from Bombay in 1921. Symptoms of Purple Blotch of Onion and Garlic 1. Symptoms first appear on leaves or seed stalks as small water-soaked lesions that quickly develop white centers. 2. Under favourable condition, these lesions enlarge, coalesce, become zonate and brown to purple that extend upward and downward. 3. In moist weather, the surface of the lesion, may be covered with black fruiting bodies of fungus. 4. The older leaves are more susceptible than younger leaves and younger leaves relatively more susceptible when they emerge close to bulb maturity. 5. Similar lesion may form on seed stalk, as a results seed either do not develop or are shriveled. The infected plants fail to develop bulbs. 6. Severely infected foliage of onion and garlic may exhibit dieback. 7. The bulb can also be affected at harvest when the fungus enters through the neck or injurious, causing storage rot. …
Symptoms and Management of Rhizopus Soft Rot of Sweet Potato
Symptoms and Management of Rhizopus Soft Rot of Sweet Potato Causal Organism: Rhizopus stolonifer Or Rhizopus nigricans. Symptoms of Rhizopus Soft Rot of Sweet Potato ♦ Watery soaked rot with a …