Bioguider

  A number of diseases and pests may attack the mushroom crop if left uncared. Disease Green mould ( Trichoderma viride) : It is the most common disease in oyster mushroom where green coloured patches are observed on cubes. Control : Dip a cotton swab in formalin solution (4%) and scrapped off the affected area. If the fungus attacks more than half of the cube then the entire cube should be discarded. Care should be taken that the contaminated cube is burnt or buried in a place far from the cropping room to avoid reinfection. Insects   1. Flies: Sciarid flies, Phorid flies, Cecid flies are found to be attracted to mushroom and odour of spawn. They lay eggs on the straw or mushroom, and the larva emerging from them damage the crop. Larva feed on the mycelium, mushroom and penetrate inside the fruiting bodies making it unfit for consumption.   Control: To check entry of adult flies during the cropping period, screen the doors, windows or ventilators, if any wi...

  ·         Louis Pasteur was a French microbiologist. He discovered the principle of vaccination, microbial fermentation and pasteurization. ·         His remarkable breakthroughs in the causes and prevention of discoveries have saved many lives ever since. ·         He reduced mortality from puerperal fever and created the first vaccines for rabies and anthrax. ·         His medical discovery provides direct support for the germ theory of disease. He discovers the technique to stop bacterial contamination in milk and wine, which is called as Pasteurization. ·         Pasteur was responsible for disproving spontaneous generation. He performed experiments which show that without contamination, microorganisms could not develop. ·         He demonstrated the processes...

  PATHOGENIC DISEASES AND PEST Natural silk is produced by the silkworm, which is used for many purposes. Silk thread has several uses, including parachute manufacturing, tire lining, electrical insulation, artificial blood vessels, and surgical thread. Oil can be extracted from silkworm pupa, amino acids and vitamin B2 and can be used in the pharmaceutical industry. Overall, the silkworm industry plays an important and active role in the development of national income and stimulates the rural economy and the overall development of agriculture, forestry, animal husbandry, side-line occupations and fisheries, suprs the development of local light industry and expands trade Silkworm disease must necessarily have a specific cause. These causes belong to various categories including biological, chemical, physical, nutritional, environmental, constitutional, etc. Among which the most important are the biological factors. The biological agents eliciting silkworm diseases are viruses...