scholarly journals Current State of Granulometric Composition of Irrigated Meadow-Serozem Soils of Azerbaijan

2021 ◽  
Vol 7 (12) ◽  
pp. 69-72
Author(s):  
A. Mammadova ◽  
A. Suleimanova
Keyword(s):  
Irrigation Water ◽  
Granulometric Composition ◽  
Uneven Distribution ◽  
Current State ◽  
Irrigated Lands ◽  
Sand Dust ◽  
Irrigated Soils

The article deals with the granulometric composition of irrigated-meadow-gray soils (Irrigic Calcisols). Along with the granulometric composition, the ratio of sand, dust and silt fractions was taken into account. The results of the analysis show that the uneven distribution of dependent silt particles supplied with irrigation water causes a variety in the granulometric composition of irrigated soils. At the same time, the differences in the granulometric composition of irrigated lands and raw soils were identified, and the reasons were studied.

scholarly journals Agroecological assessment of water-physical properties of irrigated soils of the Trans-Urals in the analysis of the main hydrophysical characteristics

2021 ◽  
Vol 36 ◽  
pp. 03014
Author(s):  
I.V. Komissarova ◽  
A.V. Chelovechkova ◽  
N.V. Miroshnichenko
Keyword(s):  
Physical Properties ◽  
Soil Properties ◽  
Granulometric Composition ◽  
Water Transfer ◽  
Soil Stratum ◽  
Irrigation Rate ◽  
Irrigated Soils

Water-physical properties of soils are a set of soil properties that determine the accumulation, preservation and water transfer in the soil stratum. One of the important indicators of water-physical properties are soil-hydrological constants. These indicators can be used in forecasting yield, calculating the irrigation rate. The determination of soil-hydrological constants is a rather laborious process. In this article, we propose to obtain soil-hydrological constants from the data of the main hydrophysical characteristics. This technique allows to analyze the data and obtain soil-hydrological constants from the data of granulometric composition. The conducted studies have shown that the use of uncontrolled irrigation has led to the transformation of water-physical properties, the content of easily mobile, productive and gravitational moisture has decreased. When modeling the MHC curve, a change in the shape on the graphs can be noted.

scholarly journals PRODUCTIVITY AND QUALITY OF POTATO TUBERS ON IRRIGATED SOILS DEPENDING ON AGROTECHNIC CULTIVATION WAYS IN THE FOREST-STEPPE OF THE MIDDLE VOLGA

2018 ◽  
Vol 12 (4) ◽  
pp. 95-99
Author(s):  
Петр Чекмарев ◽  
Petr Chekmarev ◽  
Константин Владимиров ◽  
Konstantin Vladimirov ◽  
Александр Кокров ◽  
...  
Keyword(s):  
Granulometric Composition ◽  
Forest Steppe ◽  
Biotic Factors ◽  
Potato Tubers ◽  
Middle Volga Region ◽  
Middle Volga ◽  
Abiotic And Biotic Factors ◽  
Selection Of ◽  
Irrigated Soils

In modern conditions, one of the priority directions of potato growing is the selection of new highly productive varieties, resistant to the action of abiotic and biotic factors. When potatoes are cultivated, the optimization of mineral nutrition and the depth of planting of seed tubers is an important factor for obtaining sustainable yields. The experiments were laid on gray forest medium loamy granulometric composition of the soil of the forest steppe of the middle Volga region. It was established that the highest yield - 52.50 tons per hectare was formed when fertilizer doses (manure 50 tons per hectare + N135-153P135-145K179-184) were calculated for 50 tons per hectare of tubers, when planting to a depth of 8-10 cm. On tte background fertilization in a dose of manure 50 tons per hectare + N120P120K140 when planting at the same depth yield was 49.50 tons per hectare. On the variant with a planting to a depth of 6-8 cm, the yield of tubers was to 2.89 and 2.92 tons per hectare lower.

PHYTOPHTHORA SPP. IN SOILS OF THE OKANAGAN AND SIMILKAMEEN VALLEYS OF BRITISH COLUMBIA

1964 ◽  
Vol 42 (10) ◽  
pp. 1411-1415 ◽  
Author(s):  
D. L. McIntosh
Keyword(s):  
British Columbia ◽  
Irrigation Water ◽  
Soil Samples ◽  
Phytophthora Cactorum ◽  
Phytophthora Spp ◽  
Orchard Soils ◽  
Chemotactic Effect ◽  
Irrigated Soils ◽  
Cultivated Soils

Phytophthora cactorum is widely distributed in irrigated soils in the Okanagan and Similkameen valleys of British Columbia. Other species isolated, when over 1800 soil samples were assayed for the presence of Phytophthora fungi, were P. cryptogea twice, P. cambivora once, P. megasperma var. sojae once, and P. drechsleri twice. Phytophthora spp. were not recovered from virgin soils nor from non-irrigated cultivated soils, nor from orchard soils receiving irrigation water that is chlorinated. P. cactorum, P. cryptogea, and P. cambivora are pathogenic to rootlets of pear, cherry, apricot, and peach seedlings. P. megasperma var. sojae and P. drechsleri were weakly to non-pathogenic to these hosts. Pear and apple rootlets exerted a chemotactic effect on zoospores of P. cambivora and P. cactorum.

scholarly journals Remote monitoring over the salinity of irrigated soils within the cotton-growing zone

2014 ◽  
pp. 20-31
Author(s):  
Ye. I. Pankova
Keyword(s):  
Soil Salinity ◽  
Remote Monitoring ◽  
The Other ◽  
Soil Monitoring ◽  
The South ◽  
Middle Asia ◽  
Irrigated Lands ◽  
The Given ◽  
Cotton Plantations ◽  
Irrigated Soils

Under discussion are problems of soil remote monitoring and the monitoring over the salinity of irrigated lands in particular. It is shown that the given problem has become very acute not only in Middle Asia but also in the southern part of Russia. The experience gained in studying the soil salinity under cotton plantations can be applicable for soil monitoring in the other regions including the irrigated soils in the south of Russia.

Local Government Networks

2016 ◽  
Author(s):  
Manoj K. Shrestha ◽  
Richard C. Feiock
Keyword(s):  
Local Government ◽  
Collective Action ◽  
Local Governments ◽  
Uneven Distribution ◽  
Mutual Aid ◽  
Political Fragmentation ◽  
Institutional Collective Action ◽  
Current State ◽  
Effective Delivery ◽  
Made In

Local governments frequently network with other local governments or other entities for efficient or effective delivery of local services. Networks enable local governments to discover ways to address externalities and diseconomies of scale produced by political fragmentation, functional interconnection, and uneven distribution of knowledge and resources. Local government networking can be informal or formal and bilateral or multilateral, in the form of deliberative forums or mutual aid agreements. This chapter uses the institutional collective action framework to underscore the link between problems of coordination and credibility of commitment that local governments face as they seek self-organizing solutions and the bridging and bonding networks they create in response to these problems. It then reviews the current state of scholarship in local government networks (LGNs) and shows that much progress has been made in both egocentric and whole LGN studies. Finally, it highlights important areas needing attention to advance LGN scholarship.

scholarly journals Effective and rational use of irrigation water in the conditions of the republic of Karakalpakstan

2021 ◽  
Vol 264 ◽  
pp. 04023
Author(s):  
S Kurbanbaev ◽  
O Karimova ◽  
Zakir Turlibaev ◽  
Rashid Baymuratov
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Water Conservation ◽  
Field Research ◽  
Irrigated Agriculture ◽  
Water Losses ◽  
Current State ◽  
The Republic ◽  
Irrigation Technologies ◽  
Effective Use

The lack of water that has been repeated in recent years dictates the requirements of a strict regime of water conservation and economical use of water. Understanding the need for strict water conservation and the fight against unproductive water losses must be started with the producers of agricultural products, i.e., from farms, as rational water use and water conservation at the field level could save a significant amount of irrigation water. The article reflects the current state of water use in irrigated agriculture in the Republic of Karakalpakstan. The main, inter-farm, and intra-farm canals have been studied in detail, and the mode and efficiency of their work have been assessed. The obtained results of the conducted field research works on irrigation technologies are presented. Suggestions on the choice of water-saving irrigation technologies are given, as well as recommendations on the effective use of irrigation water in the non-growing season.

Ecogeomorphological analysis of irrigated lands in the eastern part of the Kur-Araz lowland and ways to manage balanced development

2021 ◽  
Vol 07 (02) ◽  
pp. 43-45
Author(s):  
Ayşən Müşviq qızı Bədəlova ◽  
Keyword(s):  
Balanced Development ◽  
Current State ◽  
Intensive Use ◽  
Irrigated Lands

Ecogeomorphological analysis of irrigated lands located in the eastern part of the Kur-Araz lowland, the current state of the area, the factors that played a role in the formation of this situation were noted in the topic. Also, several solutions are shown in terms of sustainable balanced development of the area in question. It is known that against the background of intensive use of lands, the morphological forecasts of soils for future periods are not positive.

THE EVOLUTIONARY DEVELOPMENT AND CURRENT STATE OF LAKE NERO ACCORDING TO SAPROPEL ANALYSIS

2020 ◽  
pp. 7-18
Author(s):  
V. Zakonnov ◽  
Sh. Pozdnyakov ◽  
S. Kondratiev ◽  
N. Ignatieva ◽  
A. Tsvetkov ◽  
...  
Keyword(s):  
Shallow Lake ◽  
Granulometric Composition ◽  
Suspended Particles ◽  
Evolutionary Development ◽  
Lake Ecosystem ◽  
Layer By Layer ◽  
Hydrochemical Parameters ◽  
Current State ◽  
Hydrodynamic Processes ◽  
Wind Driven Currents

The paper presents the characteristics of sapropel based on the results of analysis of samples collected at 21 stations in Lake Nero. Its current state is assessed based on hydrophysical and hydrochemical parameters. A layer-by-layer (0–10, 30–40 and 60–70 cm) granulometric composition of stratigraphic cores made it possible to compare the evolutionary development of the lake corresponding to the periods 100, 300–400 and 600–800 years ago. It is found that natural hydrodynamic processes (wind-driven waves and wind-driven currents) cause erosion and mixing of the surface (0–10 cm) polluted sapropel layer with clean underlying horizons and carry pollutants absorbed on suspended particles outside the lake. The approach used made it possible to identify the ways of a shallow lake ecosystem formation and outline promising directions

Ammonium Adsorption on Albic Black Soil under the Influence of Fe2+ in Irrigation Water

2012 ◽  
Vol 610-613 ◽  
pp. 2948-2953 ◽  
Author(s):  
Yi Ting Chen ◽  
Hong Guang Cheng ◽  
Xiao Pu ◽  
Chen Ye Lin
Keyword(s):  
Surface Water ◽  
Adsorption Capacity ◽  
Irrigation Water ◽  
Black Soil ◽  
Sanjiang Plain ◽  
Ammonium Concentration ◽  
Flooding Event ◽  
Ammonium Adsorption ◽  
Irrigated Soils

The surface water of Sanjiang Plain generally contained 0.04 to 2.50 mg L-1 of dissolved Fe ion, while the groundwater contained 0.03 to 21.00 mg L-1, which is relative high in comparison with other regions. The purpose of this study was to investigate the effect of dissolved Fe in the irrigation water on the adsorption of ammonium. Soil samples were collected from topsoil of a paddy field. Fe2+concentration in either surface water (0.70 mg L-1) or groundwater (15.0 mg L-1) were simulated to employ batch experiments in lab. The results show that when Fe2+ concentration was 0.70 mg L-1, it might slightly increase ammonium adsorption on the albic black soil. However, when Fe2+ concentration increased to 15.0 mg L-1, it may increase or decrease ammonium adsorption on the albic albic black soil, depending on ammonium concentration in the soil solution. In details, ammonium adsorption capacity decreased when ammonium concentration is less than 30.77 mg L-1, while increased when it’s more than 30.77mg L-1. Long-term irrigated soils with groundwater might increase content of iron oxides in the paddy soils and thus increase ammonium adsorption capacity. However, Fe2+ in the irrigating water might also lead to desorption and leaching of ammonium in each flooding event.

scholarly journals Characterization and Classification of Soils and Water in Major Irrigated Lands of Lake Abaya Chamo Basin.

2021 ◽  
Author(s):  
Gezimu Gelu ◽  
alemnesh gelu gezimu ayza ◽  
Chanako dane
Keyword(s):  
Irrigation Water ◽  
Water Productivity ◽  
Chemical Properties ◽  
Sustainable Land Use ◽  
Mitigation Measures ◽  
Lake Basin ◽  
Physico Chemical ◽  
Irrigated Lands ◽  
Chemical Properties Of Soils

Abstract Large amount of irrigated land under Lake Abaya Chamo basin is becoming unproductive every year because of salinity and sodicity expansion; consequently farmers are leaving their land out of cultivation due to burning of crops. For sustainable land use and Agricultural water management, it is a very important to examine the chemical composition of soils water and status of their quality. Therefore, the study was aimed to evaluate the physico-chemical properties of soils and irrigation water of irrigated lands under Lake Abaya Chamo basin, located in South East rift valley of Ethiopia. The pH of the soil in the study area ranged from (7.24 to 9.04, 7.54 to 7.91), Electrical conductivity (0.388 to 19.22, 0.644 to 23.6) under Lake Abaya and Chamo, respectively. The results of irrigation water quality showed that the water class of lake Abaya Chamo basin is under harzard status of salinity and sodicity and cannot be recommended for irrigation use. There is a potential danger of sodicity and salinity development in the intended lake basin. Thus, selection of salinity and sodicity resistant crop types, proper irrigation water application methods and other chemical mitigation measures should be designed for sustainability of soil and water productivity.

Sign in / Sign up

Export Citation Format

Share Document