Actual problems of Mathematics, Physics and Mecanics
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Actual problems of Natural Sciences
INFLUENCE OF THE FERTILIZER STANDARDS, TIMING OF PLANTING, THICKNESS OF SEEDLINGS ON THE YIELD OF A PUMPKIN SORT “ISPANSKAYA-73” IN THE CONDITIONS OF KHOREZM REGION
The influence of fertilizer standards on the yield of the pumpkin sort “Ispanskaya-73” was studied. The study was conducted under the conditions that fertilizer standards were N-150; P-100; K-90 kg, N-200; P-140; the thickness of seedlings was 220x100x1, 220x80x1, 220x70x1, and the timing of...
3 August 2020, 13:05
INFLUENCE OF AMMONIUM SULPHATE IN THE GRANULOMETRIC COMPOSITION OF AZOSUPERPHOSPHATE
This information sets out the results for improving the granulometric composition of azosuperphosphate. Investigated on the marketability finished product and the influence of the norm and method of conducting ammonium sulfate. The granules of activated nitrogen-phosphorus fertilizers have...
3 August 2020, 13:05
EFFECT OF VARIOUS SALINITY CONCENTRATIONS ON EMERGENCE OF SORGHUM SPECIES.
Salt tolerant crops are more profitable in irrigated agriculture of Uzbekistan. To study effect of various salt concentrations on emergence of sorghum species laboratory experiment conducted and results was analyzed. With the increasing salinity concentration seed emergence, leaf and root number...
3 August 2020, 13:04
GRAIN TRANSPARENCY OF TRITICALE VARIETIES GROWN IN SOIL CLIMATIC CONDITIONS OF KHOREZM REGION
The degree of grain transparency of 11 local and foreign varieties of triticale in the Khorezm region has been studied in the article. It was observed that the degree of transparency of analyzed grains is various even though they are harvested using generally accepted agro technical conditions....
3 June 2020, 01:41
THE CABBAGE BUGS IN THE TERRITORY OF THE AMU DARYA RIVER (Heteroptera, Pentatomidae, Eurydema)
This article deals with the faunistic survey on subgenus Eurydema Laporte de Castelnau, 1833, in the regions of Khorezm and Karakalpakistan. Totally 2 species from the family Pentatomidae were collected and identified. The Central Asia species: Eurydema maracandica Oshanin, 1871 and Eurydema...
3 June 2020, 01:41
CHANGING SOIL AGROCHEMICAL PROPERTIES IN CONTAMINATED SOIL BY LEAD AND ZINC
Soil contamination with Zn and Pb has led to public concern over soil contamination with metals. Agrochemical properties of three types of soils around Angren and Navoi electro stations, are determined over 10 years. It was found that soil agrochemical properties can occur in total heavy metals to...
3 April 2020, 03:35
IMPROVING THE METHOD OF SYNTHESIS OF CHLORACETYLPYROCATECHOL
In the article the reaction of chloroacetylation of pyrocatechol in the presence of catalytic amounts of Lewis acids is described. The factors affecting the course of the reaction of chloroacetylation of pyrocatechol are investigated....
3 February 2020, 02:48
GENE-STORE AND GROWING OF CUCUMIS MELO VARIETIES IN THE CLIMATE OF KHOREZM REGION
This article deals with the growth, vegetation and fertility of melon varieties grown in the lower Amu-darya riverarea. The results of studies on the amount of sugar in melon fruit, the size and weight of them are indicated here. The sorts of melons under research have been preserved not being...
3 February 2020, 02:48
KHOREZMIAN VESPIDAE FAMILY TYPE STRUCTURE AND BIOLOGY
This article provides a brief overview of the true bees of the Khorezm oasis, their composition, distribution and morphological features....
3 February 2020, 02:48
HARMFUL LOCUSTS AND THEIR NATURAL PESTS IN THE SOUTH ARAL SEA REGION
The article provides information on the morphology and physiology of the spreading vermin locusts, which cause great damage to agrocenoses and pastures in the Southern Aral Sea regions. It also provides a brief overview of the natural pests of harmful locusts spread throughout the area....
3 December 2019, 01:36