Effectiveness of leached chernozem treatment in the agro-physical parameters and yield of corn grain in the Central zone of the Krasnodar Territory

2018 ◽  
Vol 1 (74) ◽  
pp. 101-106 ◽  
Author(s):  
Alexey Matirnyj ◽  
◽  
Alexander Makarenko ◽  
Nikolai Bardak ◽  
Timofey Logoyda ◽  
...  
Keyword(s):  
Central Zone ◽  
Physical Parameters ◽  
Leached Chernozem ◽  
Corn Grain

Intrathalline variability of some structural and physical parameters in the lichen genus Lasallia

1994 ◽  
Vol 72 (4) ◽  
pp. 415-428 ◽  
Author(s):  
F. Valladares ◽  
C. Ascaso ◽  
L. G. Sancho
Keyword(s):  
Chlorophyll Content ◽  
Marginal Zone ◽  
Central Zone ◽  
Intermediate Zone ◽  
Physical Parameters ◽  
Main Role ◽  
Active Growth ◽  
Lasallia Pustulata ◽  
Water Holding

The intrathalline variability of several physical and anatomical parameters of two lichens, Lasallia hispanica and Lasallia pustulata within the family Umbilicariaceae, was studied. In each thallus three zones or concentric rings were considered: the central zone, which includes the umbilicus, the intermediate zone, and the marginal zone. The study focussed on the thickness of the thallus and its layers, the increase of surface area and volume with hydration, the sample densities in dry and wet states, several stereological parameters (especially the volume and surface density of both symbionts related to each layer and to the thallus as a whole), and the chlorophyll content. Only slight differences were revealed between the two species, but significant intrathalline variation was observed. A marked decrease in the total chlorophyll content coincided with the thickening of the thallus from the periphery to the centre. The chlorophyll content of individual algal cells, however, presented an inverse gradient. The results suggest that the main role of the dense central zone would be as a water-holding zone while the active growth in the intermediate zone could counteract the continuous erosion of the marginal zone of these umbilicate lichens. Key words: Lasallia, intrathalline variability, mycobiont, photobiont, stereology, thallus density.

scholarly journals Analysis of the Evolution of Drought through SPI and Its Relationship with the Agricultural Sector in the Central Zone of the State of Veracruz, Mexico

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2099
Author(s):  
Fernando Salas-Martínez ◽  
Ofelia Andrea Valdés-Rodríguez ◽  
Olivia Margarita Palacios-Wassenaar ◽  
Aldo Márquez-Grajales
Keyword(s):  
El Niño ◽  
Agricultural Sector ◽  
El Nino ◽  
Central Zone ◽  
The State ◽  
La Niña ◽  
Maximum Temperature ◽  
La Nina ◽  
The Relationship ◽  
Corn Grain

Agriculture and raising livestock are human activities highly affected by drought. In Mexico, the Veracruz territory is seriously affected by this phenomenon. Our study had two objectives: (1) to analyze the drought evolution through the Standardized Precipitation Index (SPI) and the maximum temperature in the central zone of the state of Veracruz for the period 1980–2018; and (2) to describe the relationship between the yield of corn grain and cattle, and the SPI, in the study area. The methodology consisted of calculating the SPI to estimate the drought conditions in the mentioned area. Subsequently, we determined the relationship of these conditions with the maximum temperature increase and the presence of El Niño/La Niña events. The results showed that the drought has intensified during 1980–2018, having a presence in almost 50% of the area. Additionally, the maximum temperature increased by approximately 6 °C. As a result, the cultivation of corn grain under rain conditions showed reductions in 48% of the analyzed municipalities. Concerning livestock variables, lower reductions were reported (42–32%) for the same period. Therefore, we can conclude that the drought has intensified in recent years due to an increase in the maximum temperature and El Niño/La Niña events, and these factors have had a higher impact on the agricultural sector.

scholarly journals Inclusion of a preparation based on biologically active silicon into the technology of sunflower cultivation

2020 ◽  
pp. 110-117
Author(s):  
A. A. Mnatsakanyan ◽  
G. V. Chuvarleeva ◽  
A. S. Volkova
Keyword(s):  
Seed Treatment ◽  
Central Zone ◽  
Biologically Active ◽  
Sunflower Seeds ◽  
Mineral Fertilization ◽  
Flowering Phase ◽  
Yield And Quality ◽  
Leached Chernozem ◽  
Cultivation Technology

The article presents the material obtained as a result of the research for 2017 and 2018, which was laid on leached chernozem in the central zone of the Krasnodar Territory in FSBSI «NGC named after P.P. Lukyanenko», on the basis of the agrotechnological department. The aim of the research was to study the effect of NanoSilicon mineral fertilization with microelements on the yield and quality of sunflower seeds. It was determined that treatment with the studied preparation shortens the interphase periods of sunflower by 1–2 days, increases the height by 8–12 cm and the biomass of one plant by 97–242 grams by the flowering phase. It was also found that NanoSilicon in the studied doses increases the yield and oil collection from 1 hectare. Thus, the inclusion of NanoSilicon preparation in the sunflower cultivation technology at a dose of 15/75/75 (seed treatment – 15 g/ha + spraying on seedlings – 75 g/ha + 75 g/ha in the phase of 5–7 pairs of leaves) significantly increases yield by 0,58 t/ha and oil collection from one hectare by 0,32 t/ha. As a result, 3,23 t/ha of seeds and 1,64 t/ha of oil were obtained.

Efficiency of herbicides application in corn for the grain depending on sowing period on leached chernozem of the Central zone of the Krasnodar Territory

2020 ◽  
Vol 1 (82) ◽  
pp. 90-96
Author(s):  
Timofey Logoida ◽  
◽  
Alexander Makarenko ◽  
Albert Magomedtagirov ◽  
Dmitry Zastezhko ◽  
...  
Keyword(s):  
Central Zone ◽  
Leached Chernozem ◽  
Sowing Period

Influence of macroand microfertilizers on productivity and quality of corn grain on leached chernozem of the Western Ciscaucasia

2017 ◽  
Vol 1 (69) ◽  
pp. 140-145
Author(s):  
Viktoriya Drozdova ◽  
◽  
Irina Buldykova ◽  
Olesya Kuchukova ◽  
◽  
...  
Keyword(s):  
Leached Chernozem ◽  
Western Ciscaucasia ◽  
Corn Grain

scholarly journals Productivity and quality of corn grain depending on doses and frequency of application of silicon-containing preparation

2020 ◽  
Vol 16 (5) ◽  
pp. 71-79
Author(s):  
A. A. Mnatsakanyan ◽  
G. V. Chuvarleeva
Keyword(s):  
Seed Treatment ◽  
Central Zone ◽  
Mineral Fertilizers ◽  
Corn Yield ◽  
Mineral Fertilization ◽  
Yield And Quality ◽  
High Doses ◽  
Positive Effect ◽  
Corn Grain

The article presents the studies carried out in 2017 and 2018 in the central zone of the Krasnodar Territory on the basis of the Agrotechnological Department of the FSBSI «National Center for Grain named after P.P. Lukyanenko». The purpose of the research was to study the dose and frequency of application of mineral fertilizers with a complex of NanoSilicon microelements, stimulating growth and development of corn and, ultimately, its yield and quality of the obtained products. Two year studies revealed the effectiveness of the positive effect of the studied drug on grain corn in all studied options. It was noted that at low or high doses of its application, a number of indicators that determine the structure of the crop and, ultimately, yield, decreased. It was found that foliar treatments increased the growing season of corn for a day. The introduction of the preparation promoted the formation of taller plants, the height of which varied from 201,3 to 212,4 cm, while in the control it was 184 cm (milk ripeness phase). In the same phase the plants had a large biological weight, which in the control was 1010,1 g/plant, and when the preparation was applied, it was 90,2–275,5 g/plant higher. Ultimately, mineral fertilization with the NanoSilicon microelement in all studied dosages had a positive effect on the corn yield, the maximum value, which was obtained when it was applied at doses of 40/75/75 (seed treatment with NanoSilicon with a rate of 40 g/ha + application by seedlings at a dose of 75 g/ha + in the phase of 7–8 leaves 75 g/ha) and 40/100/100 (seed treatment – 40 g/ha + seedlings – 100 g/ha + in the phase of 7–8 leaves – 100 g/ha), which amounted to 59,9 and 59,8 c/ha, respectively.

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

A theory of contamination in electron microscopes by surface diffusion

1978 ◽  
Vol 36 (1) ◽  
pp. 116-117
Author(s):  
J.T. Fourie
Keyword(s):  
Electron Beam ◽  
Surface Diffusion ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Physical Parameters ◽  
Carbon Compounds ◽  
Hydrocarbon Molecules ◽  
Electron Microscopes ◽  
Primary Electrons ◽  
Long Chain

Contamination in electron microscopes can be a serious problem in STEM or in situations where a number of high resolution micrographs are required of the same area in TEM. In modern instruments the environment around the specimen can be made free of the hydrocarbon molecules, which are responsible for contamination, by means of either ultra-high vacuum or cryo-pumping techniques. However, these techniques are not effective against hydrocarbon molecules adsorbed on the specimen surface before or during its introduction into the microscope. The present paper is concerned with a theory of how certain physical parameters can influence the surface diffusion of these adsorbed molecules into the electron beam where they are deposited in the form of long chain carbon compounds by interaction with the primary electrons.

Electron Microscopy in the Study of Natural Phytoplankton Assemblages

1985 ◽  
Vol 43 ◽  
pp. 620-623
Author(s):  
Linda Sicko-Goad
Keyword(s):  
Electron Microscopy ◽  
Aquatic Environment ◽  
Size Range ◽  
Physical Parameters ◽  
Specific Information ◽  
Phytoplankton Assemblages ◽  
Phytoplankton Productivity ◽  
Ecosystem Effects ◽  
Time Of Year ◽  
Species Specific

Although the use of electron microscopy and its varied methodologies is not usually associated with ecological studies, the types of species specific information that can be generated by these techniques are often quite useful in predicting long-term ecosystem effects. The utility of these techniques is especially apparent when one considers both the size range of particles found in the aquatic environment and the complexity of the phytoplankton assemblages.The size range and character of organisms found in the aquatic environment are dependent upon a variety of physical parameters that include sampling depth, location, and time of year. In the winter months, all the Laurentian Great Lakes are uniformly mixed and homothermous in the range of 1.1 to 1.7°C. During this time phytoplankton productivity is quite low.

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