As a result of the study of lichens in Ganja city it was revealed that their quantity, distribution and species composition have a natural character across the city. Its environmental situation of the area, especially the pollution level of the atmosphere is related to specification, cyclicality and intensity of production. Lichens and lichen synusiae grown in urboecosystems have been exposed to strong anthropogenic impacts. Lichens consist of 65 species with 12 families and 21 genera. Crustose (39), foliose and fructicose (56-60) lichens occupy the main place among the morphological groups.

The paper considers the influence of individual formations of macrogeographical in the period of their vegetation to some hydrochemical data for Cherek reservoir. The main plant species affecting the hydrochemical parameters of reservoir macrophytes: reed (Phragmites communis), narrowleaved cattail (Typha august folia), Soucek umbrella (Butomus umbelatus), floating pondweed (Potamogeton natans). Identified three group formation: air-water, floating, and submerged vegetation. Our research shows, that some formations have a significant influence on the hydrochemical composition of the Cherek reservoir. The pH value in the daytime (the period of maximum photosynthesis) in the estuaries of rivers, in the southern and the Northern part is higher than in the open part of the reservoir. The high values observed in the southern part, where is a large number of developed Susak umbrella. A consequence of changes in pH in the direction of its increase in certain conditions promotes the formation of carbonate, calcium and its deposition on the surface of plants. The least concentration of calcium observed in the Northern zone, where the variability was 10.9-12,2 mg/l. Diurnal variation of dissolved oxygen concentration was different. In the southern zone in the daytime maximum (6,89-6, 93 mg/l). In the open part of the reservoir these parameters were minimal (6,42-4,75 mg/l). The level of individual ingredients largely depends on the location of the sampling sites and the availability of vegetation and its species composition the number of sulfate ions ranges from 10 to 37, bicarbonates from 139 to 206,8 mg/l. are particularly large fluctuations in the content of trace elements, iron, copper, zinc, manganese.

On the meadow-chestnut loamy soil of the lowlands of Dagestan the influence of precursors and methods of tillage on the yield of winter rape seeds under irrigation were studied. Found that the most favorable conditions for growth, development and formation under watering conditions are created when sown after maize for silage in the background subsurface cultivator tillage with soil deepening at 30-35 cm.

The article analyzes the results of research on study the biometric parameters and productivity of trees of different varieties of pear-rootstock combinations. It is established, that the varieties of pear on vegetatively propagated rootstocks (БА-29), compared with varieties in the seed stocks have a high coefficient of productivity of trees. This made it possible for compaction landings and accordingly improve the overall crop yield plantations in comparison with the varieties in the wild forest seedlings the rootstocks pear.

This article is considered the reserves of licorice in Kura-Araksinskaya lowland. Shown the zones of licorice spreading. Offered the ways of rational use of this plant

For the first time the dromedar camels of Kazakhstan population of new genotypes F₅ (28,1%td, 15,6%kb, 56,2%kd) derived by rotational crossbreeding were researched. Detected the genetic productivity potential of dromedar group camels. The results showed that with the increase in the blood share of dromedar, the fat content in milk proportionally reduces. As the blood share of dromedar increases, the rate of protein ratio of milk also rises.

It is established that it takes place the wide circulation of horned cattle theileriosis in the areas of Surkhandarya, Kashkadarya, Syrdarya regions, which differ with its environmental conditions, at the same time there is distinguished a lowvirulent strain from the of Syrdarya region, which is suitable for manufacturing vaccines against theileriosis.

In article is brought general type of potato digger with equipped with supporting-crashing device, reduced sectional plowshare and swather, as well as broughted results of the energy factors. At present time all over the world are broader introduced mechanization of the cleaning the potatoes by means of the potato harvesters machines, which allow to reduce the expenseses of the labour on cleaning the potatoes in 3-5 time. Because of soil-climatic particularities (the high year temperatures, low relative moisture of the air, and compaction of ground after watering) in Republic have not found broad use a potato harvester machines. So cleaning the harvest of the potatoes is produced with using potato digger with participation multiple picker for manual selection club and longshoremen. When cleaning the potatoes, basically, use the potato digger KTN-2B, KST-1,4. In Uzbekistan condition when cleaning the early potatoes at year term, moisture of ground lowered. So in process digging ground tuberiferous layer bad to cut with formation large soil wad that obstructs the branch them from club on boom and elevator. This brings about increase the loss and damage of the club potatoes. Like this serial undermining worker organs existing potato digger in process digging withdrew in quite a numbers spare ground and as a result before plowshare tuberiferous mass collected, this worsens the process of the cleaning and enlarges the tractive resistance. So undertaking scientific exploratory is required on development more efficient providing required quality of the work under smaller power inputs and greater capacity.

The article describes biography of V.V. Dokuchaev - the founder of Russian genetic soil science. He underlined the necessary to learn interaction between dead and animate nature, formulated 5 main factors of soil organization. He developed the methods of investigation soils and proposed series of practical measures to promotion of efficacious fertility soils.