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Powered results of experiments on the effect of lysimetric plowing tree and shrub biomass in the sod-podzolic medium loamy soil on yield, nutrients concentration and accumulation of biochemicals substances in aboveground mass sowns grasses fourth to seventh year of use. Studied the formation of productivity of perennial grasses, the loss of nutrients - nitrogen, phosphorus, potassium, calcium on the disapprove background and minerals fertilizers depending on the plowed biomass. The dynamics of the yield, the concentration of nutrients of plant nutrition (NPKCa) and their accumulation in the aboveground part of the sown cereal grass as for years, and an average of four years of research in natural fertility and minerals fertilizers. A comparative assessment of the yield, nutrients and biochemicals sown cereal disapproved herbage, compared with the control (arable land), which pointed to a significant shortfall in crop yields in versions with embedded biomass (shoots of willow, melkoles birch and aspen), an average of 15-20%. On fertilized sown cereal herbage compared with disapprove background herbs yield increased as the plow, and in making biomass - from 35 to 70%. The most optimals conditions for nitrogen absorption grasses over years and an average of 4 years, created when terminating bush aspen.

The most effective methods of cucumber yield increasing are growth regulators and mineral fertilizers applications, which are important in arid conditions of the Lower Volga region. The field experiments were carried out in Caspian scientific research institute of arid agriculture, Astrakhan region, Chernoyarsky district in 2014-2016. The purpose of the study was to study fertilizers and growth regulators influence on productivity of cucumber grown in light chestnut soils with drip irrigation. On the whole, fertilizers and growth regulators application increased cucumber yield. The highest yield was obtained in hybrid ‘Russky stil F1’ in variants N110P105K75 + Megafol (136.5 t/ha) and N110P105K75 + Vitazim (96.3 t/ha), so yield increase was 84.9 t/ha and 44.7 t/ha, respectively. On, for all hybrids, average mass per plant increased by 378.7 g in variant N110P105K75, in variant N110P105K75 + Vitazim - by 842.2 g, in variant N110P105K75 + Megafol - by 1013.9 g. Cucumber yield in all hybrids on average increased by 14.5 t/ha in variant N110P105K75, by 27.0 t/ha in variant N110P105K75 + Vitazim, by 35.3 t/ha in variant N110P105K75 + Megafol. According to the results, application of fertilizers in the dose of N110P105K75 and leaf treatments with growth regulators Megafol or Vitazim increased cucumber productivity and yield reached more than 100.0 t/ha in the open field under drip irrigation. The profitability amounted to 134.1-159.3% and payback was 2.34-2.59 rub/rub.

The use of scientifically based doses of fertilizers in the cultivation of crops does not lead to the removal of nutrients from the natural reserves of the organic and mineral soil by microflora. At the same time, the methods and terms for the introduction of mineral fertilizers must be linked with the technology of soil preparation and moisture supply. Nitrogen fertilizers, because of their rapid volati-lization, are recommended to be applied for pre-sowing cultivation with sealing in the surface layer, and phosphorous fertilizers, as inactive - along with the main soil treatment. In this connection, in studies of the significant influence of the methods of basic soil cultivation with and without application of nitrogen, its dynamics along layers are not revealed. Deep soil-free tillage allows significantly more accumulation and longer storage of moisture in the soil layers; In comparison with the classical plowing and dumping plowing and planing in a meter layer of soil, the additional moisture reserves before sowing the crop are respectively 300 and 230 m3 / ha, in the tubing phase - barley - 256 and 189 m3/ha, in the phase of milk ripeness - 270 And 128 m3/ha. Deficiency of moisture reduces the biological activity of the soil, in this regard, moisture-saving methods of basic soil cultivation are especially important in conditions of rain-fed farming, not only on the yield of agricultural crops, but also on the processes of humus formation. The total accumulation of amino acids in the half-meter layer in the variant with deep soil-free tillage before sowing barley was 424 μg amine / G of cloth, in the phase of tubing - ear - 400 μg amine / G canvas, in the phase of milk ripeness - 210 μg amine / G of canvas. The values obtained are higher in comparison with the control data and the variant with planar tillage at 7 and 18%, 48 and 32%, 10 and 36% respectively. Positive dynamics in terms of productive moisture and accumulation of amino acids in the variant with deep soil-free soil treatment, application of calculated phosphorus doses for main processing and nitrogen for pre-sowing cultivation, had an effect on a significant increase in grain relative to control at 0.4 t/ha, Processing - at 0.35 t/ha.

The results of small (20-22 cm) and relatively deep main processing of the soil (27-30 cm) and variable rate application depth of arable horizon of doses of mineral nutrition (N and P2O5) on yield of spring barley. It is established that ploughing soil up to 30 cm (pillars of Cibima) with in-corporation at the same depth easy phosphorus-rhenium increases the biological activity of the soil microflora involved in the proposal of cellulose substrates is a means of increasing the fertility of light chestnut soil, which is especially important for rainfed conditions. The average crop capacity in the shallow plowing is 2 t/ha and was lower at 15% compared to Varian, where he held a deep subsurface tillage. By years of research sum-total biological activity in the deep subsurface treat-ment amounted to 930 mg of amino acids per gram of leaf, which is higher by 26% the variant with shallow plowing. Compared to shallow ploughing (option 1) at subsurface relatively deep processing of crude soil (option 2) there is greater accumulation of productive moisture in a meter layer. In the period of tillering of plants at average moisture reserves in option 2 is higher by 16% than in option 1 and constitute a 147 mm. In phase trubavina-earing and full maturity of the spring-barley the difference between the productive moisture content increases to between 20 and 33% in the direction of no-till deep processing. Relatively high soil moisture (a consequence of the method of tillage) contributed to a more rapid transition of phosphates in the horizon of 25-30 cm and nitrate in the layer 10-15 cm in available forms of nutrients for soil microorganisms. It is revealed that the application rate of nitrogen and phosphorus should be linked with the main processing of the soil, and the peculiarities of development of the root system of cultivated crops.

As a result of three-year experiments, carried out on the radio-active contaminated sod-podzol sandy soil, the influence of different seeding rates of lupine grass mixtures on two backgrounds of potash fertilizer in doses K180 and K120 on the yields of green mass, grain forage and specific activity of Ce137 in the yields of marketable products has been determined. The optimal seeding rates of different lupine-grass mixtures ensuring maximum yields of green mass at the level of 32,1-35,4 t/ha, grain forage - 2,56-2,91t/ha and specific activity of Ce137 being lower in levels set by sanitary standard (SanPin 2.3.2 1078-01) on the background of potash fertilizer in dose K210.

In terms of radioactive contamination of the environment has developed comprehensive techniques (agro and agro-chemical) for the rehabilitation of natural lands Root systems producing fodder appropriate sanitary standards. Evaluate the effectiveness of interventions to reduce the accumulation of 137Cs in the natural and sown herbage water meadows.

Proposed in a sod-podzolic sandy soils effective system of fertilization of seradelly that will significantly increase the production of feed appropriate health and safety standards, as well as reduce the need for fertilizers of subsequent cultures.

The results of researches of drop irrigation of potatoes in Oman depending on a threshold of preirrigation humidity of the soil and creation of a water heat-sink layer are presented. It is established that at maintenance of the differentiated threshold of preirrigation humidity of the soil the most effective use of irrigating water is provided and high productivity of potatoes is reached. It is established that increasing level of preirrigation humidity of soil during the vegetative period from 70 to 80% yield of potatoes can be increased on the average by 26,2%. Artificial formation of water accumulative zone by application of sapropel and bentonite clay promotes decrease in expenses of irrigation water by 5—6% and increases the potato yield by 10—11% and 3—5% respectively.

Results of research on technology of drip irrigation on onions in Republic of Nepal are presented. The assessment of influence of moisture and nutrition levels of plants on productivity and quality of onions crop was done.

In work the material which characterizes influence of different climatic conditions of year (a temperature mode, a mode of humidifying) and various predecessors (pure, borrowed, grain) is presented on productivity and quality of grain of oats.

The results of research on the effect of drip irrigation regimes and doses of mineral fertilizers on water consumption and yield of onions cultivated on alluvial soils of southern Nepal are presented in this work. It was established that with an increase in the preirrigation threshold moisture level of soil and mineral fertilizers increased crop yield of onions.

Increase of productivity of summer grain crops at the present stage has great value for an agricultural production. For achievement of an object in view studied reaction of new and perspective grades of an oats at different technologies of cultivation which differ with a level of a mineral feed and to applied means of protection of plants. At observance of technology of cultivation productivity reaches 5-7 ton/hectares.

The results of researches on formation of productivity of spring wheat are resulted at an irrigation depending on predecessors and doses of entering of nitric fertilizers in the conditions of Mesopotamic plain of Iraq. It is revealed that the predecessor lucerne in the first year and green fallow (mung bean) as intermediate summer culture the next two years improve ростовые processes and is created by optimum conditions for growth and development of spring wheat and reception of a big crop of grain. Thus nitric fertilizers in a dose of 200 kg/hectares at spring wheat cultivation raise productivity of grain on the average on all predecessors on 32,8% in comparison with not fertilized background.

Increase of productivity of spring wheat at the present stage has great value for an agricultural production. It is necessary to study reaction of new and perspective grades at different technologies of cultivation which differ with a level of a mineral feed and to applied means of protection of plants. Productivity of grades of spring wheat at high-intensity technology reaches 6-7 ton/hectare of grain.

Special attention in our studies was paid to conditions of formation of water and soil nutrient regimes, as basic elements in regulation of the production process beet under irrigation in order to obtain the planned harvest of the Centre in range 40...100 t/ha. With irrigation sprinkler canteen beet on light chestnut soils and maintaining before irrigation humidity level 80-80-70% (F.C.) with differentiated depth irrigation 0,3 to 0,6 m and Making N320P175K145 ensures yield commodity Roots till 111,5 t/ha. The combination of controllable factors on the yield of table beet economically and energetically favorable.

When introducing the Oriental radish crop into the open and protected ground in Bryansk region we believe that one of the most important economic indices is this crop productivity and its shelf-life in the storage conditions in winter time. Results obtained show that this crop has good prospects for cultivation in our region.