Determination of Actual Crop Evapotranspiration (Etc) and Dual Crop Coefficients (Kc) for Cotton, Wheat and Maize in Fergana Valley: Integration of the Fao-56 Approach and Budget

Kenjabaev, Shavkat; Frede, H. G.; Begmatov, Ilkhom; Isaev, S. K.; Matyakubov, Bakhtiyar

doi:10.31838/jcr.07.05.67

Cited by 4 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Evaporation (E) refers to the loss of water from the soil where the crop is placed. Specific literature has been used and methods for determining transpiration (T) (Fletcher et al, 2018) or evapotranspiration (Lu et al, 2018;Kenjabaev et al, 2020) in wheat have been assimilated. Using the CROPWAT model (Smith et al, 2002) and the Mark Marsalis model (ACES, 2018), we were able to simulate the required daily plant consumption over the entire vegetation period.…”

Section: Introductionmentioning

confidence: 99%

Winter wheat crop water consumption and its effect on yields in southern Romania, in the very dry 2019-2020 agricultural year

Berca¹,

Robescu

Horoiaş³

2021

Not Bot Horti Agrobo

View full text Add to dashboard Cite

Researches on winter wheat in the south part of Romanian Plain during the dry years 2019 and 2020 have been focused on the crop water consumption issue in excessive conditions of air and soil drought. The wheat crop water consumption in the research sites (Calarasi and Teleorman counties), for the entire vegetation period, autumn – spring – summer, is between 1000 and 1050 m3 of water for each ton of wheat produced. Only in the spring-summer period, the wheat extracts a quantity of about 5960 m3 ha-1, i.e. 851 m3 t-1. The useful water reserve is normally located at about 1500 m3/ha-1, at a soil depth of 0-150 cm. In the spring of 2020, it has been below 400 m3 ha-1, so that at the beginning of May the soil moisture had almost reached the wilting coefficient (WC). Wheat plants have been able to survive the thermal and water shock of late spring - early summer, due to enhanced thermal alternation between air and soil. For a period of about 34 days, this alternation brought the plants 1-1.5 mm water, i.e. approximately 442 m3 ha-1, which allowed the prolongation of the plant’s agony until the rains of the second half of May. Yields have been, depending on the variety, between 1500 and 3000 kg ha-1, in average, covering only 60% of the crop costs. Other measures to save water in the soil have also been proposed in the paper.

show abstract

Section: Introductionmentioning

confidence: 99%

Winter wheat crop water consumption and its effect on yields in southern Romania, in the very dry 2019-2020 agricultural year

Berca¹,

Robescu

Horoiaş³

2021

Not Bot Horti Agrobo

View full text Add to dashboard Cite

show abstract

Chemical and Biogeochemical Features of Desert Soils of the Central Fergana

Turdaliev

Yuldashev

Askarov

et al. 2021

Agriculture (Pol'nohospodárstvo)

View full text Add to dashboard Cite

The Fergana valley is a region critically important for food safety in Central Asia. The human-altered soils in Fergana are considered a key component of the transboundary region between sub-boreal and sub-tropic climatic zones. As the results of the investigation of irrigated chloride-sulfate saline soils near the surface showed the deep petrocalcic and petrosalic horizons at various depths with extremely low water and air permeability. The chemical, pedogeochemical, and biogeochemical properties of soils, the content of macroelements, trace elements, lanthanides and radionuclides, and the general geochemical characteristics of desert zone soils were investigated and determined. The background contents of the mentioned elements were recognized. The irragic, salic, gleyic, and gypsic horizons in soils were identified by WRB 2015. They can be used as reference horizons for biogeochemical studies and soil management activities. The irragic, gleyic, carbonate-gypsum horizons, evaporation, oxygenic, and other geochemical barriers were studied and revealed. The processes of accumulation, migration, and differentiation of chemical elements in solum as well as in parent materials occur with the joint effects of exogenous, endopedogenic, and artificial factors. These fluxes of elements, in turn, are affected by the nature of soils and parent materials. In this process, unexplored elements form only scattering fluxes. During the vegetation season, as well as the leaching period, considering the various horizons features will help to save significant amounts of irrigation water.

show abstract

Analysis of saline land and determination of the level of salinity of irrigated lands with use of the geographic information system technologies

Begmatov

Matyakubov

Ахматов

et al. 2020

ICIGIS

View full text Add to dashboard Cite

In Uzbekistan, more than half of population lives in rural area, their well-being depends on quality of land and water resources availability. Quality of land is determined by ameliorative indicators: ground water depth level, ground water salt amount and salinity of soil. These factors do not appear naturally but rather due to the human activity. Inefficient irrigation and excessive consumption of irrigation water on irrigated land in Boyavut District of Syrdarya region of Uzbekistan within several decades have led to a salinization of soil. The primary objective of this article is determination of the level of salinity of soil for modelling spatial distribution of soil salinity throughout an irrigated land by using GIS technology. This technology is focused on automation of development and creation of ameliorative maps, while totally eliminating manual operations. Nowadays, ameliorative expedition specialists still create cadastral map using tracing paper over the marginal areas within irrigated lands based on their ameliorative conditions and by selecting from the three thematic maps and then selecting the poorest conditions of ameliorative indicators. The suggested technology is designed for professionals of cadastral subdivisions of regional ameliorative expeditions, who use the GIS-based software, such as ArcView 3.2. or ArcGIS 10x; their duties include creating of thematic maps based on salinity levels of irrigated lands. Exact coordinates of collection sites of soils samples (collected in 2018-2019) were determined using GPS. The Inverse Distance Weighting (IDW) interpolation method was applied to use that data to create ameliorative maps categorized by the salinity levels (non-saline, slightly saline, saline area and highly saline areas). Those maps were then analysed to develop procedures on how to improve ameliorative conditions of irrigated areas.

show abstract

Determination of Actual Crop Evapotranspiration (Etc) and Dual Crop Coefficients (Kc) for Cotton, Wheat and Maize in Fergana Valley: Integration of the Fao-56 Approach and Budget

Cited by 4 publications

References 38 publications

Winter wheat crop water consumption and its effect on yields in southern Romania, in the very dry 2019-2020 agricultural year

Winter wheat crop water consumption and its effect on yields in southern Romania, in the very dry 2019-2020 agricultural year

Chemical and Biogeochemical Features of Desert Soils of the Central Fergana

Analysis of saline land and determination of the level of salinity of irrigated lands with use of the geographic information system technologies

Contact Info

Product

Resources

About