Publication Date
1989
Location
Nice France
Description
Prairie Milkvetch (Astragalus adsurgens), an acclimatized good sand binder, soil and water conservation legume forage plant, cultivated widely in the arid and semi-arid districts of North China, is especially suitable for the Loess Plateau, China. Unfortunately in the mid Inner Mongolia, North Shaanxi Province and the eastern part of Gansu Province, it is often infected seriously with Diachorella leaf spot (Diachorella lathyri Fckl.). The disease primarily affects leaves, but sometimes attacks petioles and stems. On infected leaflets first appear small black spots. As the spots increase, whole leaflet is blackened. Heavy infections kill leaflets and cause severe defoliation, and infected stems may die. The Diachorella species causing the leaf spot on Prairie Milkvetch is Diachorella lathyri Fckl. and it is a new record in China. The Diachorella leaf spot is also found in the natural population of Prairie Milkvetch in the same areas. Therefore, the origin of pathogen may be the wild Prairie Milkvetch plants. In order to extend cultivation of the Prairie Milkvetch crops in the above mentioned districts, it is necessary to carry out a study and research as well as prophylactic work on the Diachorella leaf spot. So, we started a preliminary investigation and study on this disease in 1987.
Citation
Tianjue, Hou and Jiangfeng, Wang, "Diachorella Leaf Spot of Prairie Milkvetch in Loess Plateau, China" (1989). IGC Proceedings (1985-2023). 12.
(URL: https://uknowledge.uky.edu/igc/1989/session6/12)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Diachorella Leaf Spot of Prairie Milkvetch in Loess Plateau, China
Nice France
Prairie Milkvetch (Astragalus adsurgens), an acclimatized good sand binder, soil and water conservation legume forage plant, cultivated widely in the arid and semi-arid districts of North China, is especially suitable for the Loess Plateau, China. Unfortunately in the mid Inner Mongolia, North Shaanxi Province and the eastern part of Gansu Province, it is often infected seriously with Diachorella leaf spot (Diachorella lathyri Fckl.). The disease primarily affects leaves, but sometimes attacks petioles and stems. On infected leaflets first appear small black spots. As the spots increase, whole leaflet is blackened. Heavy infections kill leaflets and cause severe defoliation, and infected stems may die. The Diachorella species causing the leaf spot on Prairie Milkvetch is Diachorella lathyri Fckl. and it is a new record in China. The Diachorella leaf spot is also found in the natural population of Prairie Milkvetch in the same areas. Therefore, the origin of pathogen may be the wild Prairie Milkvetch plants. In order to extend cultivation of the Prairie Milkvetch crops in the above mentioned districts, it is necessary to carry out a study and research as well as prophylactic work on the Diachorella leaf spot. So, we started a preliminary investigation and study on this disease in 1987.
