Did67 wrote:It depends. I'm trying to make the correct "presumptive diagnosis":
- cucumber, as we can see (cucurbits in a general way): I tear off as quickly as possible, to avoid that it is transmitted (and I try not to put plants from this family in the same place); there is a good chance that it is a virosis
- potato: in general, it is too late; if some feet are more puny, the others are viros too
- tomatoes: it seems to me less to be the virus than "foot diseases" (root rot - bacteria or fungi - at the start of installation, cold soils etc; or then nematodes where the tomatoes keep coming back - greenhouse, tunnel ; but I am investigating the foot which is in the video, the breeding of root aphids by the ants; there, a good repeated rinsing with water should suffice, the ants pack up in the slush)...
- of course, first, I check that they are not the mole rats: I dig with my finger around the plant ...
at my house a tomato foot which seems to be thirsty while the others next to superb, a gallery of voles just below, I packed following the gallery, it also passed near other feet which started to have the same symptoms
a cabbage, all withered, I thought I had an attack in the ground, I uprooted, I found ants, too bad one less the following week, 2 roe celery, plus a single leaf in the air , observation of ants and aphids again in the collar, big watering of the collar, recovery in the hour which follows, then same symptoms on another cabbage, I water abundantly, it comes back to him, and it continues, on another cabbage, each time watering allows to put back, but the vegetables are late
I think that the aphids of the roots weaken and that the dry and hot weather worsens, in any case at home, it can go until the near death of the foot, elsewhere with a little rain it must just slow down ... this n is that my belief