Comparative characterization of microbial communities in kurgans, paleosols buried under them, and background surface soils in the steppe zone of the Lower Volga region

2007 ◽  
Vol 40 (6) ◽  
pp. 665-674 ◽  
Author(s):  
T. S. Demkina ◽  
A. V. Borisov ◽  
M. V. El’tsov ◽  
V. A. Demkin
2015 ◽  
Vol 48 (3) ◽  
pp. 294-302 ◽  
Author(s):  
N. N. Kashirskaya ◽  
T. E. Khomutova ◽  
E. V. Chernysheva ◽  
M. V. El’tsov ◽  
V. A. Demkin

2009 ◽  
Vol 42 (5) ◽  
pp. 536-542 ◽  
Author(s):  
N. N. Kashirskaya ◽  
T. E. Khomutova ◽  
T. S. Demkina ◽  
V. A. Demkin

2020 ◽  
pp. 34-39
Author(s):  
Nikita Valeryevich Ryazantsev ◽  
Yuriy Borisovich Ryabushkin ◽  
Ivan Dmitrievich Eskov

In the article the results of studying the peculiarities of mildew development by the macroscopic diagnostics method on the examples of 33 varieties and hybrid grapes forms in the conditions of the steppe zone of the Lower Volga Area have been reported. Indicators of the maximum infection of leaves, inflorescences and medium infection of vegetative and reproductive organs were characterized by the greatest degree of susceptibility to mildew. The degree of mildew’s distribution and development changed from year to year depending on the current year weather conditions and the features of its development in the previous year. During the seven-year period of observations three years were characterized by epiphytoties mildew. As a result of studying of grapes resistance to mildew, groups of irresistant, tolerant and resistant varieties have been distinguished.


2018 ◽  
pp. 24-28
Author(s):  
N.V. Ryazantsev ◽  
◽  
Yu.B. Ryabushkin ◽  
I.D. Eskov ◽  
S.V. Morozova ◽  
...  

2016 ◽  
Vol 1 (4) ◽  
pp. 9-13
Author(s):  
Еськов ◽  
Ivan Eskov ◽  
Мельников ◽  
Aleksey Melnikov ◽  
Теняева ◽  
...  

The purpose of the research is to reveal the features of influence of abiotic factors on the melliferous capacity of the base field rotations and the productivity of bee families in the period of maintenance and the main honey flow in conditions of the Volga region. The experience was laid in 2012-2014 in the Saratov CIS-Volga region, in the town of Balashov. The air temperature was taken into account on the basis of his own observations, and was also used meteorological data of the weather station. In the flowering period of crops daily recorded daily air temperature (1200 hours). The results of observations of the honey yield of honeybees (Krajina breed of bees (karnika) – Apis mellifera carnica Pollm.) in the flowering period of the main agricultural crops – nectarines (legumes, Cruciferae and Polygonaceae) in the steppe zone of the Volga region. The studies were conducted in a stationary apiary, located at 100-150 m from the agrocoenosis. Provides data of daily gain or loss of honey from control hives. Tendencies of influence of meteorological conditions when applying temperature, rainfall and other abiotic factors on the data of the gain control of the honey of the hive in the steppe zone of the Lower Volga region. The highest intensity of the honey production by bees (1375,0-1428,5 g/day) is the daily air temperature is 26±0,70 C, humidity 57-59%, against short-term precipitation and wind speed of 2.8-3.2 m/s. Period sustainable honey collection, including the main honey collection (July 10 – August 10), coincides geographically with prevailing cold North and northeast winds, the negative effects of which are offset by the terrain of the steppe zone of the Lower Volga region.


Sign in / Sign up

Export Citation Format

Share Document