Le Potager du Sloth: Gardening without fatigue more than Bio

[Did67]

Bonjour,

Some varieties cultivated by professionals, among other organic producers, are available for individuals, one of the best known is the hybrid variety Paola (therefore not reproducible for an individual) of which I have seen packets of seeds for sale in garden centers.

Yes, there are seed companies who sell for professionals and individuals. Sativa (biodynamic seeds) is one example. There are also "old" varieties (we have since selected better), which are no longer of interest to professionals and which then pass into the domain of amateur gardeners ...

Sometimes it's just the "packaging" that changes. Such a brand known to amateurs is "property" of a large seed company (Vilmorin belongs to Limagrain) ...

But often the latest varieties are on the professional market and not marketed for individuals. Who knows Bejo, one of the European leaders? Browse their catalog "carrots" or "salads" for example: no name known to individuals (including "organic", marked "organic").

http://www.bejo.fr/

http://www.bejo.fr/sites/default/files/ ... 9-2021.pdf

http://www.bejo.fr/magazine/brochure-sa ... es-pousses

[Did67]

Romanella, Juanita, and several cherry tomatoes

Astonishing for the cherry tomatoes, which have often kept "wilder" characteristics ...

Note that Romanella is one of the varieties that "Savéol" (this Breton cooperative from which one of the producers is affected) promotes!

https://www.saveol.com/fr/nos-produits/ ... nella.html

A priori, after a quick search, these varieties are not in the "amateur" circuits ...

Juanita is a variety "De Ruiter", one of the great Dutch seed companies.

In this regard, this is what De Ruiter says on his site about this virus.

"Tomato Bulletin - ToBRFV Virus
Disease Update: ToBRFV Virus

The purpose of this document is to share with you the latest information in our possession regarding the disease: ToBRFV.

Global spread
A new virus was discovered in 2014 in Jordan and Israel. The virus quickly spread and caused significant economic damage to producers in the Middle East. In 2018, the virus was also detected in Germany, California (United States) and Mexico. The virus is very likely to spread to other tomato-producing countries.

Symptoms of the disease
ToBRFV (also called TBRFV in some sources) belongs to the Tobamovirus family. This family includes other species such as the tomato mosaic virus (ToMV) and the tobacco mosaic virus (TMV).

The leaves of infected tomato plants may show yellowing of the veins and veins. Mosaic spots, as well as other symptoms of Tobamoviruses, with occasional shrinking of the leaves can be observed. The fruits may show yellow spots, similar to the symptoms of the pepino mosaic virus (PepMV) and the tanned tomato disease virus (TSWV), which can develop into brown lesions and necrosis. The symptoms of the fruit can be so severe that the fruit cannot be marketed. Symptoms can vary widely depending on the time of infection, variety, temperature, light intensity and other growing conditions. We closely follow developments in order to understand the impact on different production areas and crop cycles.

Tobamovirus and resistance nomenclature
ToMV caused problems in the 1970s and 1980s. Most of the current varieties today resist the most common strains. Resistance to Tobamoviruses is ensured by the Tm and Tm2 genes. In the ISF resistance nomenclature of Tobamoviruses, this is represented by Tm: 0-2 (= Tm: 0,1,2). For more information, we refer you to the ISF website.

ToBRFV can infect plants with Tm: 0-2 resistance and cause damage very similar to that caused by ToMV on non-resistant varieties, moreover the symptoms on the fruits seem more marked. Most current commercial varieties are expected to be susceptible to this virus. ToBRFV is not a quarantine disease in the European Union at the time of writing.
Photos courtesy of Neta Luria, Elisheva Smith, Aviv Dombrovsky; https://journals.plos.org/plosone/artic ... ne.0170429

Spread of the virus
Tobamoviruses, including ToBRFV, spread mechanically, that is, a simple contact is enough to transmit the disease; this includes touching infected plants during operations such as transplanting, staking, cultivation, spraying, harvesting, etc. Clothes, shoes and equipment (knives, secateurs, packages, etc.) can transport the virus to the following plants and greenhouses. Tobamoviruses can even persist in cigarette tobacco and constitute a source of infection. The fruit may also contain the virus. Tobamoviruses are very stable in the environment and can survive on many objects, e.g. contaminated tools, cultivation threads, stakes, containers and clothing, for many months in the absence of vegetable matter. If infected, the consequences can be serious since the entire greenhouse can quickly become infected.

Prevention
Hygiene is very important. The introduction of exterior packages into premises without disinfection is to be avoided; equipment, clothing, etc. internal and external must be separated. Measures must be taken to prevent infection by people, cardboard boxes, pallets, tractors, trucks and cars. This also includes equipment from external parties. Fruit and vegetables from host species (including tomatoes and peppers) on the premises must be eliminated. Equipment disinfectants should be used.

De Ruiter's Seeds
All seeds, commercial and trial varieties, are produced under similar strict hygienic conditions to prevent the emergence of pests and diseases. We carry out regular inspections of fields and greenhouses, with crops also monitored by external government plant protection agencies. The collected seeds are always tested for the presence of Tobamovirus. Regarding the seed test, we apply the ISHI recommended method for Tobamovirus testing which also detects ToBRFV (see link below). "

[Yool]

I am going to try a few "mildew resistant" potato varieties ... Even if it has never been catastrophic for me - the plague remains the mole rats (even if a supply of castor cake seems to seriously limit the damage these two last seasons - approximately, with a ladle, 300 g / m²), and, sometimes, the Colorado beetle.

I just received my 3 samples (10 tubers) of the legendary "Sarpo Mira", as well as "Carolus" and "Vitabella".

For having tried Vitabella, I can only advise you. Last year I planted 3 varieties: Charlotte, Vitabella and Nicolas.

With a lot of rain last spring, the charlotte had a lot of burnt feet (although the tubers were not very affected).

On Nicolas and especially Vitabella, only a few affected plants with very limited spread on the plant. This year I am going back to Vitabella, white (crossbreed), Nicolas and Jeannette. Nicolas certain "specialists" describe it as not very sensitive while others say the opposite. for my part I found it less sensitive than the Charlotte. The white is a new variety described as resistant to mildew and with a good yield.

Here is the brand of the seed company from which I buy my plants (found in garden centers).

https://www.jbbernard.fr/telechargement/jardin/Guide%20vari%C3%A9tal%20magasin.pdf

[Doris]

Astonishing for the cherry tomatoes, which have often kept "wilder" characteristics ...

I was initially surprised also for the same raisos, but as a source of contamination (known as "low risk", as long as it does not leave the greenhouses) they also mention the wild herbs of the nightshade family, including nightshade black.

[Paul72]

I could not explain why, but I never had mildew on my potatoes whatever the weather ... and of course I never have products on it. maybe because contrary to the recommendations, I do not bring a source rich in nitrogen, I put them rather after plants greedy in nitrogen and I only bring a little wood ash (and a mulch of hay) . Last year, where I didn't put hay, the yields were ridiculous. Under the hay as usual, pretty beautiful potatoes although a little less than last year due to lack of rain.

[Did67]

I was initially surprised also for the same raisos, but as a source of contamination (known as "low risk", as long as it does not leave the greenhouses) they also mention the wild herbs of the nightshade family, including nightshade black.

Often, wild plants are "healthy reservoirs": they are contaminated, but without being visible.

It is a plague for many viruses (especially cucurbit mosaics), with both weeds and certain unrelated vegetables which are such "healthy carriers". This is the case, for example ... celery!

Result of the races, you eradicate sick feet, but an unfortunate aphids will do the zygomar, suck the sap next and then come back. And infect your culture next year! When you had taken all the precautions!

[Did67]

I could not explain why, but I never had mildew on my potatoes whatever the weather ... and of course I never have products on it. maybe because contrary to the recommendations, I do not bring a source rich in nitrogen, I put them rather after plants greedy in nitrogen and I only bring a little wood ash (and a mulch of hay) . Last year, where I didn't put hay, the yields were ridiculous. Under the hay as usual, pretty beautiful potatoes although a little less than last year due to lack of rain.

I also don't have the same problems on pdt as on tomatoes ...

More ...

There is one thing that we do not always realize: faced with a "drying out" of the harvests and stems towards the end of August, we tend to think that it is maturity when it is mildew; “maturation” is confused with attack of mildew. I would like to observe these tolerant varieties, in comparison, to form a more founded opinion ...

[Paul72]

The "blue flower" potato variety is extremely hardy: the first to start (it shouldn't take long), the last to freeze, and I find some forgotten every year ... It is purple and produces a lot (j have had potatoes up to 40cm in radius around the plant, up to 25cm in length and 650g ...). On the other hand, I only eat them in fries (rich in starch and puree, it becomes all gray, not very appetizing)

[stephgouv]

Didier, I am often asked the same question and I cannot answer it:
Isn't there a risk that hay seeds on the TOP (in the last 5 cm of the 20 cm) will germinate?
I want to give a convincing and fair answer to skeptics.

[phil12]

Hello !

A little thing is running into my head, since we are on viruses etc. yesterday I used a shredder to make BRF.
When pruning it is recommended to disinfect the tools well so as not to carry spores or diseases, there I grind branches therefore more or less healthy and I disseminate in a puzzle way (little thought for Volfoni) in the four corners of my orchard / vegetable patch .
I think there is food for thought.