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A plant pathologist or a student taking plant pathology is often asked by friends or associates the following questions. What is wrong with my plant; followed by, what can I do to get rid of the problem? It may be too late to help the specific plant when the question is asked, but proper diagnosis may be extremely important in preventing the problem on other plants or in preventing the problem in the future.

--- American Phytopathological Society​​



  1. Abstract, There are various ways in which plant nutrient supply or concentration affects plant diseases and pests. The supply of nutrients changes the resistance of plants to pathogens and pests by altering growth and tissue composition (e.g., concentration of soluble compounds or defence...
  2. Adusei, Stephen,Azupio, Samuel,2022/11/17,Neem: A Novel Biocide for Pest and Disease Control of Plants,2022,10.1155/2022/6778554,Journal of Chemistry Plant extracts have recently captivated scientists’ attention as a potential source of biocide for plant protection. This is due to the health and...
  3. Abstract, Compost Science and Utilization, 2002 An increasing body of experimental evidence indicates that plant disease can be suppressed by treating plant surfaces with a variety of water-based compost preparations, referred to in the literature as watery fermented compost extracts or compost...
  4. A plant pathologist or a student taking plant pathology is often asked by friends or associates the following questions. What is wrong with my plant; followed by, what can I do to get rid of the problem? It may be too late to help the specific plant when the question is asked, but proper...
  5. 28/01/2015 Introducing trichoderma, a biocontrol, how it is used, and how to produce it.
  6. Abstract, ResearchGate, 2017 Plant diseases cause substantial losses in yield of plants, leading to huge economic losses. Accurate identification and diagnosis of plant diseases are very important in the era of climate change and globalization for food security as well as prevention of the spread...
  7. Abstract,Acta Hortic. 1207, 2018 Biochar (the solid, carbon-rich co-product of biomass pyrolysis), in addition to carbon sequestration, soil amelioration and improvement of plant performance, can significantly reduce the severity of foliar and soil-borne diseases in various crops. Nevertheless,...
  8. Beginning master gardeners can be intimidated by the daunting task of correctly diagnosing the cause of a client's plant health problem. However, with experience and the development of a systematic approach to diagnosis, master gardeners will become confident and successful plant problem...
  9. In the preceding section on identifying plant health problems (http://edis.ifas.ufl.edu/MG441), we explained how to first identify problems related to environmental factors or caused by insects. In this section, we will concentrate on diagnosing plant diseases caused by pathogenic microorganisms,...
  10. 19/01/1994 If you download a publication, please contact Food Plant Solutionsat –info@foodplantsolutions.org Feedback on any publication is invited and much appreciated –info@foodplantsolutions.org Return to the Publications List
  11. Seminar Nasional Agroteknologi 2022 Volume 2023 http://dx.doi.org/10.11594/nstp.2023.3114 Purple spot disease is one of the main diseases in leaf onion cultivation. One form of control is carried out by utilizing neem plants, especially the neem leaves which have the potential as vegetable...
  12. Sunflower,Helianthus annuus, is an herbaceous annual plant in the family Asteraceae, grown for its seeds. The plant has a thick, hairy, erect stem which gives rise to a large flower head. The plant has large, broad lower leaves which are oval and arranged alternately on the stem and smaller,...
  13. AccessAgriculture Training Video La mosaïque du manioc est une importante maladie du manioc qui diminue les rendements. Elle se reconnaît par les feuilles des plantes qui présentent des tâches qui vont du vert-clair au jaune. La maladie est donnée à la plante par la mouche blanche. Cette maladie...
  14. AccessAgriculture Training Video Le faux charbon provoque un aspect crayeux des grains de riz, et affecte la mouture, la cuisson et la consommation.En appliquant une série de pratiques agroécologiques, vous pouvez éviter l'apparition de maladies dans votre culture de riz. Langues disponibles...
  15. AccessAgriculture Training Video La plupart des agriculteurs confondent la maladie de la pourriture noire avec le mildiou. Alors que le mildiou commence par des points violacés irréguliers sur les feuilles, la pourriture noire commence sous forme de petites zones jaune brun en forme de V sur les...
  16. AccessAgriculture Training Video Le mildiou est causé par des moisissures qui survivent dans le sol et par les résidus de cultures infectées. Inspectez votre champ tous les jours. Si vous voyez des plantes malades, coupez les parties malades et brûlez-les. Ne mettez jamais des parties de plantes...
  17. AccessAgriculture Training Video Les maladies de la rouille se propagent par le vent et peuvent rapidement se développer par temps frais et humide. Pour savoir si votre culture est affectée par la rouille, frottez sur la partie infectée de la plante pour voir si une poudre brune ou noire colle à...
  18. Abstract, International Clinical Pathology Journal, 2017 SK Thind, Punjab Agricultural University, India India is the second largest producer of fruits in the world, contributing 10% of the total production. But, the total production is quite below (45.496million tons from 37.96million hectares)...
  19. AccessAgriculture Training Video Des producteurs en Inde nous montrent comment la maladie apparaît tout d’about au bout de la feuille. Finalement, la plante s’assèche. Des méthodes non-chimiques peuvent combattre cette maladie. Langues disponibles Anglais Bambara Birman Chichewa / Nyanja Dioula...
  20. Bayer Crop Science, January 30, 2023 Key Points Different diseases may have similar symptoms, particularly during the early stages of disease development. It is not uncommon for a corn plant to have several different diseases present at the same time. Multiple diseases present on a corn plant can...
  21. Abstract,University of Tehran, 2017 Nowadays, hundreds of plant clinics are available for smallholder farmers especially in developing and less-developed countries in order to improve the yield and quality of agricultural products. Several investigations have been carried out to study the role of...
  22. 20/01/2012 This bulletin provides information on the causal agents, distribution, economic imporance, symptons, epidemiology, and management of major diseases of pigeonpea. The test is supplemented with color photographs of disease symptoms and a diagnostic key is included to facilitate identification....

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