The main irrigation is at the time of transplanting. Hole-in-one 2 liters of water. In the spring another dostatochnogo in the ground and the tomato first uses the moisture from the hole where planted. Then the roots during active growth using soil moisture. Thus, the roots go deep to find moisture. Formed deep root system, and it suffers less in hot weather.
If the tomatoes be watered very often, the root system will be shallow.The roots need not go deep to look for moisture because it comes from the top! When loosening you can even see how the chopper gear white roots and tearing them to pieces. This stress disturbs the natural growth of your tomato crop may be less.
If the summer heat leaves tomatoes begin to lose turgor (progettista), and leaves a little podvedut, then we intentionally watered the garden.Watering tomatoes should be rare, but abundantly that the ground is well soaked. During the summer season, subject to rains, we pour the tomato beds 3-4 times.
Rare and surface watering, recall, provokes the formation of a shallow root system that suffers during the dry season. In the end, then very often you need to water the tomatoes. And this time, and fizicheskomu.
More moisture requires the tomato plant in the period of growth of the vegetative mass of stems and leaves. In the presence of fruit in the technical maturity of tomato plants is not desirable often to water. If there is rain,then enough of them. Otherwise, the leaves do not have time to evaporate the excess moisture. In the fruit moisture accumulates, and they crack. The salad varieties, especially in timeplan and selenoprotein (class 'Mikado black', 'Emerald Apple') the skin is thin. Just for this they are appreciated by lovers of salads. That's why the excess moisture and cause cracking of the fruit.
Mulching helps to retain moisture in the soil. She does not have time to evaporate, as under mulch due to day-night changes in temperature condensate appears. If mulch is sufficient (5-7 cm continuous layer), and at least once in 2 weeks it rains, artificial irrigation is possible to opt out.
Excess moisture in the soil and the atmosphere helps to develop fungal disease. If it rains often, then in any case be privatedata outdoors! Watering is only needed in the greenhouse. We do mulching the soil. The fungus Phytophthora (and other) live in the soil. If you do not block the path of the fungus from the soil, they quickly get to plant tomato together with pieces of land. What can you expect from bushes that lie on the open ground after the rain? They are all dirty. And then in a week Ibolya blight.
Tomatoes is not desirable to pour over the sheet. Roots to be loose and wet soil, and above-ground part, in a moderately dry climate. From the heat and dry air in the greenhouse, for example, the tomato begins to actively suck the roots the moisture (works like a pump).
And that is normal to evaporate excess moisture, and more important, to breathe —he needs a lot of leaf area. That is why many greenhouses grow a 'jungle'. But not the fruit. After all forces are to build large, lupatech leaves – apparatus for the exchange of gases, moisture, temperature adjustment within the plant.