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Plant pathology or phytopathology is the scientific study of plant diseases caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1]
Halo blight is affected by environment factors and enter through plant injuries or natural openings. [3] The development of the Halo blight is highly favored by cool temperature (such as 20–23 °C), unlike other common bacterial blights. In warm temperatures (over 24 °C), the production of phaseolotoxin decreases and symptoms become less ...
[12] [13] A. flavus can contribute to the storage rots, especially when the plant material is stored at high moisture levels. A. flavus grows and thrives in hot and humid climates. [10] Temperature: A. flavus has a minimum growth temperature of 12 °C (54 °F) and a maximum growth temperature of 48 °C (118 °F). Though the maximum growth ...
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
Plant material can also be the cause of leaf spot disease. These include infected seeds, transplants and discarded culls and leaves. [ 2 ] Tools used by humans and worker's hands during transplants, watering, and market practices can contribute to the dispersal of leaf spot pathogens.
The American Phytopathological Society (APS) is an international scientific organization devoted to the study of plant diseases (phytopathology). APS promotes the advancement of modern concepts in the science of plant pathology and in plant health management in agricultural, urban and forest settings.
Because of this interaction, the terminology used in phytopathology often comes from other disciplines including those dealing with the host species (botany / plant science, plant physiology), the pathogen (bacteriology, mycology, nematology, virology), the environment and disease management practices (agronomy, soil science, meteorology ...
The disease starts out as yellowing and drooping on one side of the plant. Leaf wilting, plant stunting, browning of the vascular system, leaf death and lack of fruit production also occur. [8] F. oxysporum f. sp. melonis attacks muskmelon and cantaloupe. It causes damping-off in seedlings and causes chlorosis, stunting and wilting in old plants.