Crop harvesting

 Pathogens are these microorganism that causes significant harm of living organism. The organism that causes good effect in animals body is termed as normal flora.  A lot of microorganism found that belongs with any animal and produce mutual beneficial effect. This is symbiotic relationship. Examples of symbiotic relationship are azetobactor with legume and causing of nitrogen fixation into soil.  Bacteria involved in digestive system that causes effective digestion.  The pathogens causes disease. There have different types of pathogens. Bacteria : Clostridium titani  Virus : Tobacco mosaic virus Fungus :  Protozoa  Nematodes

 A common fungus of the colletotrichum genus causes anthracnose. The scientific name of anthracnose causing pathogen is colletotrichum corchorii.  The infection happens mainly in leaves and stems.  It causes the yellowish brown and water soaked lesson color of the stem. The fragmentation of fibre is one of the unique symptom.   It is a cool winter season disease. Cool weather promotes disease to cause. Moisture also promotes the fungus development. In optimum temperature 75 -85 degree farenhite the infection and disease development triggers. 

 Verticillium wilt is a disease of cotton plant caused by vertecillium dhalphia. The infection spreads through root.  Symptom  Tiger stripes leaf symptom  During square and ball formation stage the plant is affected. Bronging found in vein  The pathogen survival  Pathogen can survive in plant debris. In soil it can survive 14 years as microsclerotia. In cool heavy soil with alkaline environment pathogen can develop well. The soil with excessive nitrogen fertiliser is a favourable condition for infection.

 Rice productivity is mostly depends on rice health. Different types of disease impacts on rice productivity. Rice may suffer in different types of diseases that is caused by different pathogen. Blight sheath disease Tungaro disease Blight leaf disease 

 Sheath blight is a fungal disease caused by Rhizoctonia solani. The symptomatic expression of the disease is as bellow, Water soaked  Greenish grey spot in sheath  Sclerotia forming in infected tissue  In high humidity and temperature disease can spread easily. Moreover, excess nitrogen and plant density may also triggers the disease.

 Fusariun oxysporam is a pathogen that causes Fusarium wilt disease. Specially in cotton plant this disease is found. The symptom includes in fusariam wilt disease is as bellow,  Yellowing and browning of cotyledons. Browning of petioles. Leaves loss of turgity  Leaf falling and willing  Leaf yellowing  Black brown of vascular tissue  The pathogen have the following characteristics  Survive in saprophyte for long years  Clamydophores act as a resting spores  Seed born pathogen Spreads through dormant seed,  hyohae and clamydospores  May spread by air and water irrigation  Hot and humid condition is favourable