Another question about tomatoes
For many years I have been growing tomatoes in the open ground and in a greenhouse. But in recent years, many varieties have produced a dense yellow top of the fruit. Looking through various dacha forums, I found many options for such failures and different recommendations. This year I carefully read the characteristics of the varieties and replaced almost everything except black Debarao (his grandchildren love him very much and he hardly gets sick), didn’t add manure (I watered in the spring only with humates, I don’t water often, mulched the ground with straw. And now there’s a new harvest, and some of the tomatoes are again yellow and hard on top. Especially the large-fruited ones (in the picture yellow Giant Gavrisha, weight almost 500 grams, very tasty and healthy). It’s a shame to throw away 1/3 of a tomato. I ask for help from this forum. Thank you all in advance, Yulia.
Usually dense top when the fruit is unripe. But when large varieties, like ox heart, ripen completely, the bottom of the tomato may crack. Large white fibers on top are normal, otherwise it will simply fall off the branch.
To prevent tomato fruits from cracking, you need to limit watering so that it is not excessive, but 2 times a week. Phytosporin helps against many tomato diseases; the bushes need to be sprayed with it periodically.
Although we live far from the south, in the middle zone we try to leave tomatoes on the branches of the plant as long as possible so that they receive more sunlight and ripen on the root.
This is the first time I've heard about your problem. This never happens to me. If I were you, I would try growing other varieties of tomatoes.And yet, it can be assumed that this may be a consequence of the fact that the tomatoes received an excess of chemical fertilizers.
This does not depend on the type of tomato. Most likely, these fruits did not have time to ripen. Apparently, the summer was cool, and the fruits did not all ripen at the same time. Some of them turned out dense and yellow.
That's right, it's not a disease or exposure to chemicals, it's just that the fruits are not ripe. The reasons may be different: excess nitrogen (overdoing it with manure), dense planting (hence shading), excessive watering or fertilizing during the period of fruit ripening.
In addition, tomatoes cannot be planted in one place all the time, and they should not grow in the shade. Nitrogen fertilizers are applied only once, when the seedlings are planted in the ground, and then they are not needed.
You say: recent years. So it wasn't like that before. Therefore, everything needs to be changed radically: Place of planting tomatoes, varieties, fertilizers. Especially the location. Stop with this place for a few years.
In addition, you can also reduce watering a little, to about twice a week, but on these days you need to water abundantly. In the photo, the tomato has cracks on top, and this often occurs with excessive watering.