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The Plant Doctor – Radko Tichavsky – May 2023

The Plant Doctor, Dr. Radko Tichavsky, answers questions each month. This month he discusses Olive trees that have the fungi Cycloconium,  Cedar trees with Cedar rust,  Corn with Corn rust, and he gives an explanation of the difference between agrohomeopathy and holohomeopathy, which use different methods of repertorization among other things.

Editor’s note:  JT (Jenichen / Tichavsky) potency is often mentioned in these columns.  It is a centesimal dilution followed by 500 succussions or five hundred continuous turns with a wooden stick to the right and 500 turns to the left (if handling larger volumes). The JT potency frequently has a better reaction in plants and it is very important in preparation of live bionosodes.

Dear Dr. Tichavsky,

My olive trees have Cycloconium in some leaves. It has been raining for days and the fungi spread. We also had a mild winter. What can I do? The trees are in northern coastal Greece with very hot dry summers and usually winters with temperatures close to 0 celsius. Last year we had 6 months almost no rain in the spring and summer. The weather has been very unpredictable these last few years.

Also, I would like to correct the damage done to the soil from spraying copper to trees. Any suggestions?

I would like to read your book but I can’t since it is not in English. Any idea when it will be published in English too?

Thank you


Dr. Radko Tichavsky:

Dear Jason,

The genus Cycloconium spp. is a group of fungi belonging to the family Mycosphaerellaceae. This genus is known to cause several plant diseases, one of the best known being olive leaf spot, also known as “freckle” or “cycloconium”, caused by the species Cycloconium oleaginum (Spilocea

This fungus has several antagonistic microorganisms as Bacillus megaterium, Bacillus cereus, Bacillus cereus, Bacillus subtilis, Corynebacterium xerosis, Burkholderia mallei, and also fungi that naturally occur on olive leaves and cooperate with the Olea app. trees.

This is the reason why repeated copper applications on olive trees turn this disease into a chronic one by eliminating along with the pathogenic fungus also its competitors. In other words, the disease subsides but comes back more and is more resistant.

Climatic changes characterized by erratic displacement and erratic character of prolonged periods of drought alternating with torrential rains and concentrated in very short periods stress the trees and make them more prone to disease.

The holistic way of control is based on the inoculation of mycorhizic fungi and VAM (vascular arbuscular mycorhiza) fungi. These avoid water stress: arbuscular mycorhizae such as Glomus spp.,Rhizophagus spp.,Funneliformis spp.,Gigaspora spp.,Acaulospora spp.,Scutelospora spp.,Glomus spp, and exctomycorhizae such as Pisolithus spp., Rhizopogon spp., and ectomycorhizic fungi (EM) such as Lactarius spp..Tuber spp..Tuber spp.. Amanita spp.,Russula spp.. and Suillus, among others.

TM and VAM fungi help plants absorb water from the soil, which can be especially beneficial during periods of drought.

The fungi’s network of hyphae extends into the soil and increases the surface area of water absorption, allowing plants to access more distant sources of water, as well as improving the absorption of nutrients, including those that are essential for plant growth and development under water stress conditions.

This helps plants maintain an adequate nutritional balance during drought. They increase the tolerance of olive trees to stress. The association of plants with EM and VAM fungi improves the ability of plants to resist and recover from water stress by producing compounds that act as cell protectors, reducing oxidative damage and improving the physiological response of plants to stress.

It is important to keep in mind that the ability of mycorrhizal fungi to enhance drought resistance may depend on several factors, such as plant species, soil type and specific holon conditions.

In addition, successful establishment of mycorrhizal symbiosis may also depend on the availability of fungal spores in the soil and compatibility with plant roots. That is, a good green cover based on native plants such as Ditrichia villosa (olivarda) and other drought and salinity resistant plants are very important to maintain and absorb moisture from even the weakest dew during the dry season and transmit it to the mycorrhizae which share it with the olive trees.

Spores of EM and VAM fungi are found in the surface soil around very old olive trees. Collect samples in old and resistant olive trees, and prepare a live bionosode at 4 JT power and water the bionosode around the trunks.

Also apply live bionosode from the sap of opuncia ficus indica 4 JT. This bionosode can be applied every two weeks in dry season and every two months in wetter season. In addition, you must apply the live bionosode of Aloe vera 4 JT foliarly (it contains several species of Bacillus, for example Bacillus megaterium and Bacillus subtilis, antagonists of the fungus).

Hi Dr. Tichavsky

I am located on Long Island, NY an hour and a half from Manhattan, zone 7 where our soil is very clay like.  We had a hot Spring and little to no rain. I noticed this morning after we finally got rain that all of our cedars are infected with cedar rust.

I looked in my book and was going to try Anthracinum 200c to spray on them as well as my Hawthorn and crabapples as a preventive. We are surrounded by Cedar trees so I am not able to cut them all down as all of them seem to be infected. I researched fungicides with beneficial bacteria as well.

Thank You,


Dr. Radko Tichavsky:

Dear Amy,

Cedar rust is a disease caused by fungi of the genus Gymnosporangium sp.. This disease is particularly difficult to control because of its complex life cycle, which involves two different hosts: a cedar tree and an apple or pear tree.

In the case of cedar rust, some types of fungi and bacteria can act as antagonists. Examples include Trichoderma spp. a genus of fungi that is known for its ability to compete with other fungi for nutrients and space.

Some Trichoderma species can also produce chemical compounds that inhibit the growth of Gymnosporangium. On the other hand, Firmicutes such as Bacillus megaterium, Bacilllus subtilis and Bacillus amyloliquefasciens compete strongly with Gymnosporangium sp. for space, and also produce chemicals that inhibit their growth.

Prepare live bionosode from soil present in the roots of Hedera helix containing Bacillus amyloliquefasciens. Use non-chlorinated water in its preparation and dynamize it to potency 4 JT.

Foliar application of opuntia ficus indica sap or Aloe vera sap as a coadjuvant should be done every two weeks during the most active phase of the fungus.

Cedar to become resistant to attacks of Gymnosporangium spp. should be associated preventively with ectomycorhizic fungi of the Russulaceae families, this family includes fungi of the genus Russula and Lactarius, Boletaceae, which includes several genera of fungi, such as Boletus and Suillus. and families Amanitaceae and Cortinariaceae.

Collect the fungi in the forest and place them on the ground around the trees. In this way they will disperse the spores, but you must be patient because the establishment of ectomycorrhizas takes a few years and as a rule it is more effective in its inoculation when the trees are young.

Dear Dr. Tichavsky

When we teach farmers how to select remedies, we introduce the use of a repertory rather than therapeutics. We don’t therefore say remedy x treats disease y.

Could you explain a little of the system you use?  Is it possible to use remedies over large areas using farm machinery? Have you had much experience of working to improve soils?

My organisation runs teaching courses for farmers who want to include homoeopathy as part of their animal health management strategy.

Best Wishes

Chris  -Christine Lees BSc(Hons)Ag. BEd. FSHom –  Homoeopathy At Wellie Level

 Dr. Radko Tichavsky:

Dear Chris,

Holohomeopathic repertorization is completely different from agrohomeopathy whose origin is anthropocentric, i.e. it assumes that homeopathic remedies that have therapeutic utility in humans can be automatically extrapolated to plants.

Plants share only 50% of their DNA with humans, so the use of this criterion for application to plants will have the same success rate, i.e. it is equivalent to chance. The first and most important criterion is that we do not consider only the plant or the crop itself as a “patient”, but we repertorize the whole holon (environment).

By including a greater number of triggering factors of pathogenesis in plants, the holohomeopathic intervention has a systemic characteristic and allows eliciting multiple chain reactions in the holon, which are more powerful and accurate compared to a repertorization based only on the observation of the plant or crop separated from the holon.

This makes our method suitable to be applied in agriculture on a large scale. In other words, holohomeopathy allows a greater certainty in the agricultural result and has a high capacity of predicting results in comparison with the anthropocentric agrohomeopathy derived from human repertories.

Moreover, it allows to remediate not only the plant but also to influence the micro-and macro-biota in the holon, in the air, in the water and in the soil. One of the most important aspects is that we can mitigate many of the phenomena related to climate change, an increasingly limiting factor in today’s agriculture.

We use repertorization based on metabolic similarity among living organisms as a criterion to select remedy plants among plants of different taxonomic families to the crop being treated, but at the same time we look for the remedy to have a large number of common non ubiquitous secondary metabolites.

The second criterion establishes the usefulness of the non-common (complementary) metabolites contained in the plants or organisms selected as remedies, relative to the specific pathogenic symptoms.

This selection was done manually in the past, but nowadays we have a computerized database that makes this process extremely fast and effective. The next criterion that the remedy must meet is that it must be present in the holon or in its vicinity as a bioindicator.

For example, most of the bioindicators of the holon’s state (also known as spontaneous organisms) are actually remedies provided by the holon itself to self-actualize or bioremediate itself. In this way holohomeopathy, although it uses homeopathic preparations (as does agrohomeopathy) uses its own methodology centered on a systemic, holistic point of view, achieving not only greater effectiveness, assertiveness and wide acceptance of professional agriculture, but also a greater consensus in the scientific community, consistently demonstrating the scientific basis on how the selection of remedies is carried out.

Dear Dr. Tichavsky,

Last year we had Corn Rust in the crop. We’re in Riverton, Cherokee County, Kansas (U.S.)  Annual rainfall is from 30 – 40 inches here. Temperatures range from -1.6°C in January to 26°C in July. (zipcode 66770 ). Is there a holistic approach to this?

Thank you


Dr. Radko Tichavsky:

Dear Gregory,

Rust refers to a generic name for many species of fungi that affect corn leaves and can cause significant crop damage. For example, Puccinia sorghi, Puccinia polysora (the most aggressive species in corn), Puccinia maydis (the most common and more moderately aggressive).

This rust species is also known as common corn rust. It causes orange to brown spots on the leaves, stalks and ears of corn.

The resistance of corn to rust will very much depend on your species, your holon conditions (abiotic stresses such as drought, pollutants, plant nutrition, winds and biotic stresses such as complexity or poor microbiota in the soil and on the plant surface) as well as the corn hybrids used.

Inoculation of Piriformospora indica, a fungus of the Sebacinales family, which forms symbiotic associations with a variety of plants, including corn, can be used as an antagonistic remedy. This symbiotic relationship helps corn resist a variety of biotic and abiotic stresses, including diseases caused by pathogens such as rust.

Inoculation of plants with Piriformospora indica has been observed to increase plant resistance to various diseases, including rust. This effect may be due to several mechanisms, including the strengthening of the plant’s natural defenses and competition with pathogens for resources.

As noted above, the efficacy of Piriformospora indica as a biological control agent can vary depending on a number of factors, including environmental conditions and the type of rust present and the state of devitalization or stress on the holon.

As a homeopathic remedy you can combine inoculation of Piriformospora indica with homeopathic preparation of Salix babylonica bark at 4 JT potency and Equisetum arvense 4 JT foliar sprayed at 50-100 liters per hectare. The finer the spray (small drop) the smaller the quantity of homeopathic remedy to be used.


Many readers asked about Dr. Radko Tichavsky’s books.  Below is a photo of them. They are available in Spanish, Italian and Portuguese. For ordering or information:  [email protected]

 New Video from Dr. Radko Tichavsky!
In this video, renowned Agrohomeopath Dr. Radko Tichavsky explains Holohomeopathy, the more advanced method of agrohomeopathy:   (English subtitles)

About the author

Radko Tichavsky

Radko Tichavsky was born in the Czech republic. He has lived in Mexico for more than 25 years and is one of the most important agrohomeopaths in Latin America. He is the author of the book "Manual de Agrohomeopatia", a homeopathy book on plants. Radko teaches agrohomeopathy in several countries and regularly publishes articles in special journals and internet portals. He works as a researcher and teacher at the university and has already taught agrohomeopathy to many students. He is the director of the Comenius Institute ( More details can be found in the following interview:

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