منابع مشابه
Mycosphaerella leaf spot diseases
By the end of the 1980s, black leaf streak disease caused by Mycosphaerella fijiensis was present in all continents where bananas or plantains were grown, although distribution in some regions was limited to a few countries. In this presentation, the spread of the disease during the 1990s in several countries and regions, and the important socio-economic consequences are discussed. From 1990 to...
متن کاملBacterial Leaf Spot of Alfalfa '
The bacterial leaf spot described here was first recognized on Turkestan and Grimm alfalfa (Medicago sativa L.) in two locations at Madison, Wis., in August 1930. The alfalfa in both instances was in cultivated experimental rows and had been repeatedly splashed bywatering with a garden hose. In October 1931 the disease recurred under similar circumstances at one of these locations, but with the...
متن کاملIntroduction of some new mitosporic fungi causing leaf spot on broad leaf trees in Guilan province (N Iran)
Several leaf spotting or blotching fungal diseases occur on forest trees in Guilan province (N Iran). Some of them such as maple tar spot affect health of host trees severely, but many are of minor effect. This study was carried out to identify unknown and less known fungi causing leaf spot and leaf blotch diseases on broad leaf trees in this region. So far numerous fungi were collected. Four s...
متن کاملCephalosporium Leaf Spot of Syngonium Podophyllum Schott
Syngonium podophyllum Schott, commonly referred to as Nephthytis, in commercial chan nels ranks fourth in economic importance in the ornamental foliage industry of Florida and has a sales value of approximately $350,000 annu ally. Of the relatively few diseases which affect Syngonium, a leaf spot caused by Cephalospo rium dnnamomeum Linn has been observed to occur with not uncommon frequency an...
متن کاملAn Investigation of Apple Chlorotic Leaf Spot (ACLSV) and Tomato Ring Spot (ToRSV) in Some Iranian Pear Gardens
Background and Aims: In spite of a long tradition of fruit-tree growing in all provinces of Iran, information on pear (Pyrus communis) tree viruses is scant. In order to identify of the nature of the virus like symptoms and decline in pear trees, we carried out a survey for the occurrence of four important viruses. Materials and Methods: Leaf samples of pear showing virus like symptoms wer...
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ژورنال
عنوان ژورنال: INTERNATIONAL JOURNAL OF PLANT PROTECTION
سال: 2017
ISSN: 0974-2670,0976-6855
DOI: 10.15740/has/ijpp/10.2/369-374