Prof. Yasser M. Shabana



Major specialty: General plant pathology, biological control of plant diseases and weeds, plant disease management, weed management and model systems, invasive weeds management, and microbial pesticides.

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Yasser M. Shabana
Professor of Plant Pathology and Vice-Dean for Graduate Studies, Research, and Cultural Affairs; Faculty of Agriculture, Mansoura University, Egypt.

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Grants

Participated as Princepal Investigator or Co-PI in about 28 research projects funded by international and local funding bodies for a total of more than 20 million Egyptian pounds

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Research

Prof. Yasser's investigation into sources in order to establish facts and reach new conclusions.



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  • Reduction in crop yield:

    Weeds compete for water, nutrients & light. Soon they outgrow the crops & consume large amounts of water & nutrients causing a 40% reduction in yield of groundnut & 66% reduction in yield of chilli. The loss of N through weeds is about 150 kg/ha.

  • Increase in the cost of cultivation:
  • One of the objects of tillage is to control weed on which 30% expenditure is incurred and this may increase more in heavy infested areas & also cost on weed control by weeding or chemical control. Hence, reduce margin of net profit.

  • Quality of field produce is reduced:
  • Weed seeds get harvested & threshed along the crop produce which lowers the quality. Such produce fetches fewer prices in the market. E.g.: Leafy vegetables, grain crop.

  • Reduction in quality of livestock produce:
  • Weeds impart an undesirable flavor to the milk (Ghaneri), impair quality of wool of sheep (Gokhuru, Aghada), and cause death of animals due to poisonous nature of seed (Dhatura).

  • Harbour insect-pests & disease pathogens:
  • Weeds either give shelter to various insect pests & disease pathogens or serve as alternate hosts & thus helps in perpetuating the menace from pests & diseases. E.g.: Gall fly of paddy, midge fly of Jowar, leaf minor of soybean & Groundnut, rust of Wheat, tikka of Groundnut, Black rust of wheat ,Downey mildew (Saccharum spontaneum).

weeds
weeds

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