Phosphorus is especially necessary at the beginning of growth of plants when future inflorescences (a phase 4-6 leaves are put. The shortcoming conducts it to an underdevelopment of ears at this time, the wrong ranks of grains are formed. Sufficient providing plants with phosphorus stimulates development of root system, increases drought resistance, accelerates formation of ears and maturing of a crop. Phosphorus is absorbed by plants in smaller quantities, comes to them more slowly and more evenly, than kadiya and nitrogen. The maximum consumption by its corn falls on the period of formation of grain and proceeds almost before its maturing.
systems, absorption by roots of water and nutrients, efficiency of photosynthesis, decreases unproductive breath, the ovodnennost and water-retaining ability of leaves raise. The corn badly transfers remoistening of the soil, sharply reducing a grain yield. Because of a lack of oxygen of the rehumidified soil receipt in phosphorus roots is slowed down, the content of the general, organic and nucleinic phosphorus as a result decreases, phosphorylation processes, power processes in roots and a proteinaceous exchange are broken.
In the Nonchernozem zone close dependence between daily efficiency of leaves and daytime temperature of air is observed (the coefficient of correlation +0, that is the is higher temperature, the efficiency of work of leaves is higher. For corn biologically active temperature temperature above 10 °C below which processes of growth and development of plants practically stop is considered. The sum of biologically active temperatures necessary for maturing of early ripening varieties makes 1800-2000 °C, mid-season and late-ripening grades - 2300 - 2600 °C. Mid-season and late-ripening hybrids differ among themselves on the sum of temperatures necessary for achievement of a phase of a vymetyvaniye, and demand almost identical sum of temperatures for passing of the subsequent phases.
glutaminovy acids. Pestichny columns apply in medicine. From stalks, leaves and ears develop paper, linoleum, viscose, absorbent carbon, an artificial stopper, plastic, anesthetics, etc.
The corn is used on a green forage which is rich with carotene. The dry leaves remaining after cleaning on grain, stalks and cores of ears of corn also are used for fodder. In 100 kg of corn straw 37 fodder units, and in 100 kg of the ground cores - 3 contain
mineral salts and vitamins. From grain receive: flour, grain, flakes, canned food (sugar, starch, ethyl / alcohol, dextrin, beer, glucose, sugar, treacle, syrups, honey, oil, vitamin E, ascorbic and
Lessovidny clays have palevato-brown color, prizmovidno-komkovaty structure, friable or slaboplotnovaty, the plotnovaty structure is more rare. Differ in high calcareousness with a congestion of concretions of carbonates - beloglazk at a depth of 80-100 cm.
east winds. In winter time they are followed by snow-storms and blizzards, and have character of dry winds which strongly reduce humidity of the soil in the summer. For the purpose of weakening of influence of dry winds and droughts it is necessary to apply a complex of the agrotechnical and meliorative actions directed on accumulation and preservation of moisture in the soil.
Nitrogen is of especially great importance at early stages of growth of plants. At its shortcoming growth and development of plants are late. The maximum intake of nitrogen is observed within 2-3 weeks before a vymetyvaniye. Nitrogen consumption by plants stops after the beginning of dairy ripeness of grain.
Corn grain - a fine forage. 1 kg of grain contains 1,34 fodder units and 78 g of a perevarimy protein. It is a valuable component of compound feeds. However the protein of grain of corn is poor in irreplaceable amino acids - a lysine and tryptophane - and is rich with invaluable protein in the fodder relation - zein.
Other feature of climate is that summer rainfall drops out in the form of short-term, but very intensive heavy rains, their maximum falls on June-July. These heavy rains give soil erosions and almost do not increase moisture content in it.