With the advent of spring, a new cycle is launched in greenhouses with vegetables. A very responsible and troublesome time begins, full of surprises and surprises, most of all from the weather. Of course, each farmer seeks to minimize risks by improving his farm: reliable heating of greenhouses, including underground heating, covering greenhouses with ultra-transparent film, a forced ventilation system, supplementary lighting. All aspirations are aimed at getting the harvest as early as possible in the spring. This is understandable, because this is the salary of the farmer, the salary of his workers. But not everyone who deals with greenhouses has the financial resources for such an arrangement of the greenhouse. Especially if it concerns small-scale production, with greenhouse areas up to 0.5 hectares.
Most often, the economy is simpler: all-weather film (often colored or already cloudy), a solid fuel potbelly stove and drip irrigation. But everyone has a desire to get an early harvest, as a result, “acceleration” begins even in seedlings. Today we will speak on the example of the king of vegetables - tomato. With the planned planting of seedlings in early April in an unheated film greenhouse, sowing starts on January 20 or even earlier! It heats well in a low small hotbed, but the film is often old, muddy and dirty. The cloudy weather of winter already does not provide the desired level of insolation, here also the film will absorb some of the light. So the seedlings are rushing by leaps and bounds into heaven, light, fragile. What to do??
After all, before the landing is still like before the moon. People grab hold of retardants. Seedlings stop growing, become dark and stocky. Buyers of seedlings like this very much, but no one thinks about the possible consequences in the form of a halt in growth, a lack of productivity. Often these plants lose their growing point. Well, they seem to have stopped growing. You can breathe a sigh of relief. The landing time is approaching, and it is overcast and very cold outside.
It is impossible to keep it further in seedlings; it has already been sour in the nursery for more than 2 months. Yes, the first brush is already blooming in the Bookmark of the first brush after 4 sheets after treatment with retardants. syu. They go to plant in jackets and hats with a firm conviction that the tomato is a cold-resistant crop and you can’t kill it with a stick. They poke it into the cold ground, and even spud it higher, such that the root is better. And the fact that your hands are freezing in the ground and you don’t want to take off your hat is the second question, the tomato is cold-resistant. Some even manage to immediately pour a layer of 15 centimeters with straw. After all, they read about mulch, it is good for soil fertility, yes. No one thinks at this moment that they are creating a refrigerator in the ground. Then the fight begins.
Tomato, falling into the cold ground, stops growing, rapidly turns blue, the bottom leaf turns yellow with blue veins - this is how nitrogen deficiency manifests itself against the background of very low temperatures, especially at night and before dawn. Potbelly stoves heat up right there, the daytime temperature approaches the optimum, but the nights are still cold. Potbelly stoves are already boiling to the fullest, within a radius of a meter the plants are already withering, and then it is still cold, especially at the ends. Tell me what to feed him?
Well, it doesn't grow! - the most frequent question in stores with agricultural chemistry. People are starting to buy growth stimulants and UREA. All this in the tank mixture is loaded into a drop. Dosages are growing, passions are not weakening! And finally, the tomato "went". Everyone has joy and jubilation, moved, thank God! By inertia, almost daily, huge doses of stimulants are introduced into the drop and along the leaf along with nitrogen fertilizers. What we see: the tomato really begins to grow, but it does not look at all like the science of agronomy requires. Light green color of stems and leaves, without a hint of anthocyanin, long internodes, long and thin "heads", long, sometimes 10 or more cm legs of brushes. It's just that the ground is cold as it was, the weather is constantly overcast, the night temperatures are too low. The most interesting begins when friendly spring comes. It is such a spring in the south - fast, hot, with a powerful sun.