Online ISSN: 2515-8260

Keywords : soil


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

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.

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.

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.