Abstract Wheat ( Triticum aestivum L.) yields are commonly affected by foliar infection fungal pathogens. Of these, three wheat leaf blotch diseases, septoria nodorum (SNB), tan spot (TS) and tritici (STB), caused Parastagonospora Pn ), Pyrenophora tritici-repentis Ptr ) Zymoseptoria Zt respectively, induce major yield losses. Infection results in necrotic areas on the leaf, it is often difficu...

A strict field experiment with crops sown in crop rotation and monoculture wascarried out in the years 1988-2012 at the Experimental Station Uhrusk belonging tothe University of Life Sciences in Lublin, south-eastern Poland. The study wasaimed at evaluating the structure of weed communities occurring in crop rotationand monoculture of cereals. The highest weed density m-2 was determined inthe s...