Online ISSN: 2515-8260

Keywords : soil


Physicochemical and marine actinomycetes characterization of soil samples from the coastal areas of Arabian sea

Deepa Mathew P, Dr. V. Robin Perinba Smith

European Journal of Molecular & Clinical Medicine, 2023, Volume 10, Issue 1, Pages 4910-4938

The marine actinomycetes are a rich source for novel biomolecules. Especially the exotic
tropical marine habitat of the Kerala coastal region favours the actinomycete diversity. The
 
present study focuses on the isolation, purification and morphological characterization of marine actinomycetes. A total of 280 morphologically distinct actinomycetes were isolated from marine soil and sediments of 10 different isolation sites along the coastal region of Thiruvananthapuram district Kerala, India. The physicochemical analysis of the soil samples collected from different stations was also done. Even though the soil/sediment samples were collected from geographically nearby places, the physicochemical parameters showed a significant variation. This may be one of the factors which may trigger the actinomycete diversity in these regions
The marine actinomycetes are a rich source for novel biomolecules. Especially the exotic
tropical marine habitat of the Kerala coastal region favours the actinomycete diversity. The
present study focuses on the isolation, purification and morphological characterization of marine
actinomycetes. A total of 280 morphologically distinct actinomycetes were isolated from marine
soil and sediments of 10 different isolation sites along the coastal region of Thiruvananthapuram
district Kerala, India. The physicochemical analysis of the soil samples collected from different
stations was also done. Even though the soil/sediment samples were collected from
geographically nearby places, the physicochemical parameters showed a significant variation.
This may be one of the factors which may trigger the actinomycete diversity in these regions
 

DEFINITION DRIVE RESISTANCE OF THE HULL PLOW WITH UNDER-CUT FORMATION

Abdullaev Dilmurod, Soyibjonov Ahmadillo

European Journal of Molecular & Clinical Medicine, 2022, Volume 9, Issue 7, Pages 6079-6086

The article presents the results of a theoretical study of the determination of the traction resistance of the plow body when the formation is undercut. The influence of the undercut width of the formation on the energy performance of the plow and the traction resistance of the hull is studied, taking into account the width of the undercut of the formation. According to the results of the research, it was found that the traction resistance of the body depends on the width and thickness of the processed layer, the width of its undercut, the angles of the plowshare to the bottom and the wall of the furrow, the thickness of its blade, the speed of the unit and the physical and mechanical properties of the soil.

Information and energy assessment of genesis and fertility soil

Savich V.I.*, Nafetdinov Sh.G.** RGAU-MSHA them. K.A. Timiryazeva

European Journal of Molecular & Clinical Medicine, 2022, Volume 9, Issue 7, Pages 9857-9860

The genesis and fertility of soils are determined by the processes of transformation, migration and accumulation of matter, energy and information. It is proved that these processes determine the intensity of the development of podzol formation in soils, gleying, and the soddy process.
It is shown that it is more profitable to grow on more cultivated soddy-podzolic soils, from an energy point of view. Winter wheat, on less cultivated - perennial grasses. On less cultivated soils, there is a greater risk of crop failure under adverse weather conditions.
It is proposed to carry out an information assessment according to the multiple correlation equations. It is proved that the information-energy assessment of soils is necessary for the correct characterization of the genesis and fertility of soils.

Oil Contaminated Soils And Their Biological Recultivation

Z.A. Jabbarov; B.T. Jobborov; Sh.A. Xalillayev; V.Kh. Sherimbetov

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 6, Pages 2797-2810

The following studies have shown the results of low, moderate, strong and very strong soil contamination as well as the change of soil morphological characteristics, the strains separation of oil-breaking bacteria and the development of recultivation technology. According to the results, the changes in soil morphological characteristics differ in contamination degree, and the morphological characteristics of very strong soil contamination (more 25 g/kg) have dramatically changed. The oil-breaking bacterial strains such as MFD-100 Pseudomonas stutzeri, MFD-200 Pseudomonas caryophyllis, MFD-5000 Bacillus subtilis are separated from oil-contaminated soils. Based on these strains, the three-stage recultivation technology has been developed, and as a result of the conducted recultivation, the soil cover is purified up to 81.8%. Soil purification rate is divided into the following efficiency indicators: 1 - soil purification rate 0-20%, 2 - soil purification rate 20-40%, 3 - soil purification rate 40-60%, 4 - soil purification rate 60-80% and 5 - soil purification rate 80-100%. After the soil recultivation, the productivity indicators such as nutrient and humus content as well as pH environment are improved.

APPLICATION OF GEOINFORMATION TECHNOLOGIES FOR SUSTAINABLE USE OF WATER RESOURCES

Mukhamadkhan Khamidov; Khasimbek Isabaev; Ilkhom Urazbaev; Utkir Islamov; Aziz Inamov; Zokhid Mamatkulov

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 1639-1648

Research in the 80s of the XX century aimed at changing the hydromodular
zoning of irrigated lands of the Khorezm oasis in Uzbekistan, the distribution of irrigated
lands by hydromodular regions and the definition of scientifically based irrigation regimes
for cotton in each hydromodule region. This article presents the results of scientific
research on the implementation of hydromodular zoning of irrigated lands of Khorezm
region, the distribution of irrigated lands by hydromodular regions and the definition of
scientifically based irrigation regimes for cotton in the main hydromodular regions of
Khorezm region. Moreover, it provides information on the study of hydrogeological
conditions, the definition of irrigated lands in the new hydromodular areas of the oasis.
Irrigated lands of Khorezm region belong to one soil-climatic zone - desert zone, three soilameliorative
areas within this zone. For the first time electronic distribution of irrigated
lands of Shоvоt and Gurlan districts of Khorezm region on the basis of geographic
information system (GIS) technology, using the data of soil-lithological sections and
observational wells maps were created.
When irrigating cotton in the most common hydromodule regions VII, VIII and IX in the
region cotton, while maintaining the pre-irrigation the soil moisture at the level of 70-80-
60% LSMC (lowest soil moisture capacity), and cotton is grown at 3856 m3 / ha (VII), 2789
(VIII) and 2203 m3 / ha (IX) irrigated according to seasonal irrigation norms; 35.0, 38.9
and 39.8 С/ha of cotton, with a minimum of one quintal for growing cotton: 55.4; 71.7 and
110.2 m3 of river water is consumed.

INFLUENCE OF VARIOUS FACTORS ON THE FORMATION OF PHYTOTENEMATODES OF COTTON AND ALFALFA AGROENOCYTES AND THEIR COMMUNITIES IN TASHKENT REGION

ABDURAKHMANOVA GULNORA; SADIKOVA SAYORA; RAKHMANOVA LAYLO; ERMATOVA NIGORA; ХАMZAEVA SURAYO

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 7, Pages 5063-5076

This article presents data on agrotechnical factors for the formation of a biocenotic complex of phytonematodes of agrocenosis of cotton and alfalfa. Also the dependence of the formation of fitonematodes communities on the value of agrocenoses of alfalfa and cotton on their surrounding ecosystems is determined, the role of the latter as a place of reservation and the settlement of certain species is determined, the significance of organic – mineral fertilizers in the accumulation of pytonematodes in the soil of agrocenoses.
Agrocenoses are greatly influenced by the formation of the phytonematodes community by soil factors and agro-technical factors in agrosenosis. The formation of the biocenotic complex of phytoenomatodes of agrosenoses is influenced by agro-technical factors and the environmental ecosystems that surround them. be surrounded by the surrounding ecosystems The laws of the ecosystem include the accumulation and distribution of parasitic species in agrosenosis, the deep processing of organic mineral fertilizers in the soil, which results in the accumulation of phytonematodes in agrosenosis.

TO THE SAFE APPLICATION OF DEFOLIANT COTTON PHOSPHODEPHOSPHATE IN AGRICULTURE OF THE REPUBLIC

Tulkin Iskandarov; Liliya Romanova; Iskandarov Aziz

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 1785-1790

Abstract. The article presents the materials of experimental research on the new defoliant of
cotton "Phosphodef". By parameters of acute toxicity the studied preparation belongs to low
hazardous compounds, IV class of hazard. The irritating effect of the preparations on mucous
membranes of eyes and skin; cumulative properties of the preparation have been studied in
acute experiments. Hygienic standards of the preparation in air, water, soil and food products;
sanitary protection zones, terms of employment are scientifically proved. According to the
research results, the use of defoliant "Phosphodeph" in agriculture from hygienic positions is
not objectionable.

Technological Quality Indicators Of Cotton Yield And Fiber Of Uzpiti-201 Cotton Variety.

S.B. Mamadalieva; Z.M. Jumaboev

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 3, Pages 2775-2780

UzPITI-201 cotton variety seeds were sown under a transparent film on March 15-25, 155, 4 thousand seedlings per hectare were left and mineral fertilizers were applied at N180Р125К90 kg/ha rate and also in the variant irrigated in the optimal 70-75-60% order compared to LFMC, i.e. due to the soil conditions formed under the positive influence of the transparent film, the highest yield was 41,4 ts/ha, an increase in the cotton fiber technological quality was observed, along with the additional cotton yield cultivation of 5, 6-9,3 s per hectare compared to the control options planted in seeds double row and single row in the usual open method