Wheat leaf rust Wheat leaf rust Wheat leaf rust is a fungal disease that affects wheat, barley and rye stems, leaves and grains. In temperate zones it is destructive on winter wheat because the pathogen overwinters. Infections can lead up to 20% yield loss, which is exacerbated by dying leaves, which fertilize the fungus. The pathogen is "Puccinia" rust fungus. "Puccinia triticina" causes "black rust", "P. recondita" causes "brown rust", and "P. striiformis" causes "yellow rust". It is the most prevalent of all the wheat rust diseases, occurring in most wheat growing regions. It causes serious epidemics in North America, Mexico and South
Causes of poverty all causes and effects of poverty. One of South Africa's major causes and effects of poverty is unemployment. Unemployment causes families to live in unsanitary conditions because a lack of financial means to improve living conditions. If the parents are unemployed, this can also affect how the child is brought up and what kind of education they receive. This issue has been recognized by the South African government and they have created organisations like the Expanded Public Works Program, also known as the EPWP. This program is an important gateway to labor absorption and provides income for poor families. Poverty