scholarly journals Efficiency of chemical protection of spring rape and mustard from rape blossom beetle

2019 ◽  
Vol 9 (4) ◽  
pp. 584-598
Author(s):  
S. V. Stankevych ◽  
M. D. Yevtushenko ◽  
V. V. Vilna ◽  
I. V. Zabrodina ◽  
D. D. Yushchuk ◽  
...  
Keyword(s):  
Germination Rate ◽  
Forest Steppe ◽  
White Mustard ◽  
Meligethes Aeneus ◽  
The Third ◽  
Growth Increase ◽  
Significant Damage ◽  
Seed Yields ◽  
Emulsion Concentrate ◽  
Spring Rape

One of the most dangerous pests of cabbage crops which can damage plants in the budding and flowering phases in all areas of their cultivation is a rape blossom beetle (Meligethes aeneus Fabricius, 1775). The pest is widespread throughout Ukraine; it causes significant damage to the crops every year and reduces the seed yields. It should be noted that the rape blossom beetle is not new to our country and as a pest of rape and other crops from the cabbage family has been mentioned since 1845, and a detailed description of its morphology, biology and ecology can be found in the works of the nineteenth century. It is established that in the Eastern Forest-Steppe of Ukraine the first individuals of the rape blossom beetle appear on the flowering wild growing plants (first of all on dandelion and buttercup) when the average daily temperature exceeds 8 °C, it is the middle of the first decade of April and the beginning of the third decade of April. The mass emergence of the rape blossom beetles takes place when the daily average temperatures are at the range of 9–13 °C and the sum of the effective temperatures above 5 °C is at the range of 100–113 °C, it is the middle of the second decade of April and the end of the third decade of April. The females of the rape blossom beetle usually lay 2–3 eggs into one bud of spring rape or mustard. When protecting the crops from the rape blossom beetle the highest technical efficiency was noted when applying the binary mixture of the microbiological preparation Actophyte, 0.25 % of emulsion concentrate in the dose of 4.8 L/ha and systemic insecticide Biscaya, 24 % of oily dispersion (0.25 L/ha) and in 14 days after spraying it was 76.6 % on white mustard, 74.3 % on Chinese mustard and 76.2 % on spring rape. The highest growth increase in the yield capacity was observed in the same variant; for white mustard it was 0.431 t/ha, for Chinese mustard it was 0.265 t/ha and for spring rape the growth increase amounted to 0.277 t/ha. As a result of the researches it is established that the weight of 1000 healthy seeds is 2,6996 g, and the weight of the seeds damaged by the larvae of the rape blossom beetle is 0.4213 g, so it is reduced by 84.4 %. The filling of the damaged seeds is 6.8 times more, which indicates that they are smaller in diameter and frail. The undamaged seeds of spring rape contain 35.92 % of fat, and the damaged seeds contain only 17.48 %, which is 2.05 times less. The protein content in the undamaged seeds was 30.97 % and in the damaged ones it was 32.23 %, that is 1.04 times more. The germination rate of the undamaged seeds of spring rape under the laboratory conditions on the eighth day was 90.0 %, and the germination rate of the damaged ones amounted to 58.0 % and was lower by 32.0 %.

scholarly journals Influence of the sowing time and mineral fertilizers on the productivity of annual grass mixtures

2021 ◽  
Vol 22 (5) ◽  
pp. 735-744
Author(s):  
A. A. Artemyev ◽  
A. M. Guryanov ◽  
M. P. Kapitanov ◽  
A. A. Pronin
Keyword(s):  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Winter Rye ◽  
White Mustard ◽  
Annual Grass ◽  
Sudan Grass ◽  
The Third ◽  
Green Mass ◽  
Oilseed Radish ◽  
First Time

The productivity of annual feed grass mixtures (vetch + oats, Sudan grass + white mustard, Sudan grass + oilseed radish), sown after the winter rye harvesting during the “shooting” phase (the 1st time of sowing), during the “heading” phase (the 2nd time of sowing), and during the phase of complete ripeness (the 3d time of sowing), was studied in the conditions of forest-steppe soils of the Volga Region (the Republic of Mordovia). The experiment was carried out in 2018-2020 on heavy loamy soils against the background of three doses of mineral fertilizers use (without fertilizers, N16P16K16 + N30, N16P16K16 + N60). It has been established that the duration of vegetation of feed mixtures according to the time of sowing when harvesting for green mass was: at the first the time of sowing - 63-85 days, at the second - 63-76 days, at the third - 56-62 days. The highest height of the plant was at the first time of sowing with the use of fertilizers at a dose of N16P16K16 + N60, the lowest - at the third time of sowing. The highest growth was achieved by Sudan grass (48-116 cm), the lowest - by the mixture of vetch and oats (18-67 cm). The highest yield of green mass (14.0 t/ha) was observed when cultivating Sudan grass mixed with oilseed radish on the background of N16P16K16 + N60 at the first time of sowing. For mixture of Sudan grass with white mustard, the yield was 2-7 % lower, and for vetch + oats mixture - 32-45 % lower. The same was observed according to the yield of dry matter and feed units. As to the protein content, mixtures of Sudan grass with cruciferous crops exceeded the vetch + oats mixture by 7-26 %. The fiber content in the grass mixtures was decreasing from the first time of sowing to the last. The greatest amount of fiber (28.11-28.72 %) was observed during the second time of sowing. The economic assessment showed that the cultivation of annual grass mixtures after winter rye without mineral fertilizers was the most cost-effective (29-208 %). The highest efficiency (202-208 %) was provided by the mixture of Sudan grass with oilseed radish and white mustard.

scholarly journals PROSPECTS FOR USAGE OF OIL CROPS IN CROP ROTATIONS OF THE FOREST-STEPPE ZONE OF THE VOLGA REGION

2021 ◽  
Vol 250 ◽  
pp. 54-61
Author(s):  
A.L. Toygildin ◽  
◽  
M.I. Podsevalov ◽  
V.N. Ostin ◽  
◽  
...  
Keyword(s):  
Biological Diversity ◽  
Plant Protection ◽  
Protection System ◽  
Volga Region ◽  
Soil Tillage ◽  
Forest Steppe ◽  
White Mustard ◽  
Combined System ◽  
Plant Protection System ◽  
Spring Rape

An increase of biological diversity of field crops is relevant for modern agriculture. The aim of our study was comparative assessment of productivity of oilseeds (oil flax, white mustard and spring rape) and substantiation of primary soil tillage technology and plant protection during crop cultivation in the foreststeppe zone of the Volga region. The research results showed that the growing season of white mustard was 87-99 days, oil flax - 97-106 days and spring rape - 97-103 days. The period from harvesting to winter wheat sowing was 12-20 days for oil flax, white mustard - 20-30 days, for spring rape - 14-20 days, which makes it possible to use these crops as forecrops for winter grain crops. When cultivating oil flax, white mustard and spring rape, combined system of soil tillage in crop rotation is more effective, where, in comparison with the minimum tillage of the soil, the seed yield increased (by 8.4-23.7%), as well as vegetable fat (by 16.9- 30.5%). The adaptive integrated plant protection system (a combination of agrotechnical, biological and chemical plant protection methods) was more effective in comparison with herbicide usage. Evaluation of economic efficiency showed that cultivation of spring rape provides a higher level of income in comparison with other crops. Combined tillage and the protection level of standard agricultural technologies (only herbicide usage) ensured an increase of net operating profit per hectare, therefore, the substantiation of plant protection system should be carried out with egad to economic limits of harmfulness.

scholarly journals Використання кластерного аналізу за підбору сортів і гібридів ріпаку ярого для вирощування в Лівобережному Лісостепу України

2013 ◽  
pp. 6-11
Author(s):  
А. В. Мельник
Keyword(s):  
Cluster Analysis ◽  
German Firm ◽  
Oil Yield ◽  
Forest Steppe ◽  
Left Bank ◽  
The Third ◽  
Single Cluster ◽  
Selection Of ◽  
Spring Rape

Ідентифіковано сорти та гібриди ріпаку ярого, придатні для вирощування в північній частині Ліво-бережного Лісостепу: гібриди ПР45Г72, ПР45Г73, Сієста та сорти Гайдн, Ольга, Аіра, Байкал, Марія, Терра, Отаман, що забезпечують формування уро-жайності понад 1,6 т/га насіння й збір олії понад 0,6 т/га. За результатами кластерного аналізу виді-лили декілька груп сортів і гібридів (кластерів), а са-ме: до першого з них належать Аіра та ПР45Г73; до другого – Микитинецький та Отаман; до третього – Байкал і ПР4572; до четвертого – Гайдн і Терра – обидві селекції німецької фірми «Норддойче Пфлан-ценцухт Ганс-Георг Лембке КГ»; до п’ятого класте-ра можна віднести Обрій та Оксамит. Під час вибо-ру виробником сортів ріпаку ми не рекомендуємо ви-користовувати з одного кластеру два й більше сор-тозразків селекції одного оригінатору, поскільки за однакових умов вони будуть реагувати ідентично. Spring  rape varieties and hybrids suitable for cultivation in the northern part of Left-Bank Forest-Steppe of Ukraine have been identified: PR45G72, PR45G73 hybrids, Siesta and  Haydn, Olga, Aira, Baikal, Maria, Terra, Ataman varieties, which ensure the yield of more than 1.6 t/ha of  seeds and oil yield of more than 0.6 t/ha. According to the results of cluster analysis several groups of varieties and hybrids (clusters) have been defined, namely: Aira and PR45G73 belong to the first group, the second group contains Mykitinetsky and Ataman, the third – Baikal and PR45G72, the fourth – Haydn and Terra – both are the selection of German firm “Norddeutsche Pflantsentsuht Hans-Georg Lembke KG”, the fifth cluster may contain Obriy and Oksamyt. While selecting the varieties of rape a producer is not recommended to use two or more accessions selections of one originator out of a single cluster, because in the same conditions they will respond similarly.

scholarly journals Species ratio in the complex of the cruciferous bugs and seasonal dynamics of the population number

2021 ◽  
Vol 11 (1) ◽  
pp. 38-45
Author(s):  
S.V. Bondarenko ◽  
S.V. Stankevych ◽  
A.V. Matsyura
Keyword(s):  
Average Density ◽  
Climatic Conditions ◽  
Maximum Density ◽  
State Enterprise ◽  
White Mustard ◽  
Trap Crop ◽  
Population Number ◽  
The Third ◽  
White Cabbage ◽  
Spring Rape

The complex of cruciferous bugs includes such species as painted or harlequin (cabbage) bug (Eurydema ventralis Kol), pentatomid rape bug (E. oleraracea L.), and mustard bug (E. ornata L.). They belong to a line Hemiptera, the family Shield bugs (Pentatomidae), and the genus Cruciferous bugs (Eurydema). The dominant species is the cabbage bug. The mustard bug dominated only in 2007, and since 2012 it has not been detected in the records. They are widespread throughout the whole territory of Ukraine. Both adult bugs and larvae damage the crops; they pierce the leaf skin or floriferous shoots with the proboscis and suck out the juice. The light spots appear at the puncture points, the tissue dies, falls out, and the irregular form holes are formed. When the seeds are damaged, the flowers and ovary fall off, and the seeds' quality deteriorates. The harmfulness of the bugs increases dramatically in dry and hot weather. We found out that the largest number of wintering bugs was concentrated in the forest belts, near which there were the crops of spring oilseeds and cabbage plants and the seeds of white cabbage. The density of wintering imagines of the cabbage bug was 1.7–4.4 specimens/m², and the density of the rape bug was 0.9–2.3 specimens/m² of the forest floor. In the first turn, the wintered bugs' imagines populated the cabbage seeds as a trap crop, and then they populated the sprouts of spring rape and mustard. The density of the cruciferous bugs on the seeds of white cabbage of Kharkivska 105 variety was 19.0-30.7 specimens per plant at the beginning of the populating of spring oilseed cabbage crops at the Educational, Research and Production Centre "Research Field" of Kharkiv National Agrarian University named after V.V. Dokuchaiev (Ukraine). The maximum density of the cruciferous bugs in the phenophase of the yellow bud on the crops of spring oilseed cabbage plants was the following: 4.5±1.45 specimens/m² of the cabbage bug was found on spring rape of Ataman variety, 4.0±1.83 specimens/m² on white mustard of Carolina variety and 3.5±2.65 specimens/m² on Chinese mustard of Tavrychanka variety; and the density of the rape bug was 0.7±0.23, 0.5±0.23 and 0.5±0.3 specimens/m² respectively. The maximum density of the cruciferous bugs in the phenophase of the yellow bud on spring rape of Ataman variety was 6.0±0.9 specimens/m², on white mustard of Carolina variety it was 5.7±0.85, on Chinese mustard of Tavrychanka variety, the average density was 5.3±0.9 specimens/m² at the state enterprise "Research Farm "Elitne" (Ukraine). The highest number of cabbage and rape bugs at a density of 22.3–30.7 specimens/plant is concentrated on the seeds of white cabbage plants at noon, and the lowest number of them was found at 8.00 AM, and the density was 17.9–28.5 specimens/plant. The maximum density of 51-60 specimens/plant was at noon. We found out that the beginning of populating spring rape of Ataman variety by the bugs that occurred in the phenophases of 3−4 pairs of true leaves, namely during the rosette formation. The larval reappearance's beginning took place when the sum of the active temperatures was 520–688 °C (from the end of the third decade of April to the beginning of May's third decade when the sum of the active temperatures was 106-412 °C). We observed the peak of the cruciferous bugs' number from the second and third decades of June to the third decade of July, depending on the year's climatic conditions. The highest density of the bugs was observed before harvesting.

ПОЗДНИЙ ЭНЕОЛИТ ЛЕСОСТЕПНОГО ПОВОЛЖЬЯ В СВЕТЕ РАДИОУГЛЕРОДНОГО ДАТИРОВАНИЯ

2020 ◽  
Author(s):  
A. Korolev ◽  
Keyword(s):  
Volga Region ◽  
Forest Steppe ◽  
The Third

The materials of the Late Eneolithic of the forest-steppe Volga region are represented by three main groups. The first group includes ceramics with an "inner edge", the second – materials of the Volosovo appearance of the Gundorovka settlement, the third – ceramics of the Bolshaya Rakovka II, Chekalino IV sites and others, which are close to the Toksky type. The time of the existence of materials of the first and second groups fit into the second half of the 4th millennium BC and corresponds to the stage of the late Eneolithic. The time of distribution of materials of the third group includes a longer period from the second quarter to the end of the 4th millennium BC.

Cultivation of Rapeseed in the Southern Urals and Its Rational Use

2020 ◽  
Vol 67 (1) ◽  
pp. 78-86
Author(s):  
Nikolay S. Sergeev ◽  
Mikhail V. Zapevalov ◽  
Alexander V. Gritsenko
Keyword(s):  
Southern Urals ◽  
Research Purpose ◽  
Partial Replacement ◽  
Biodiesel Fuel ◽  
Forest Steppe ◽  
The Southern Urals ◽  
Rational Use ◽  
Chelyabinsk Region ◽  
Spring Rape

In the continental climate of the southern Urals, rapeseed compares favorably with many forage and traditional silage crops with a high protein content and adaptive properties. The cultivation of rapeseed guarantees the production of its own seeds, up to 40 percent of oil, 60 percent of cake and 98 percent of rapeseed flour. (The research purpose) The research purpose is in improving the efficiency of rapeseed cultivation and rational use of rapeseed seeds, rapeseed flour and oil in the agricultural production in the Chelyabinsk region. (Materials and methods) The influence of various forecrops on the productivity and quality of spring rape seeds in the links of grain-pair crop rotations in the Northern forest-steppe of the Chelyabinsk region were studied. Authors have analyzed the chemical composition of the soil and seeds of spring rape after various forecrops. (Results and discussion) The article proposes to reduce energy costs during pressing and reduce residual oil in the cake after pre-grinding of rapeseed by cutting method using a centrifugal-rotary shredder. The article shows that rapeseed flour has a good flowability and is easily mixed with other feeds. It was found that partial replacement of concentrates with rapeseed flour in the amount of 8-12 percent of the total weight in the diet of lactating cows contributes to an increase in milk productivity by 1.1-1.8 kilograms in terms of milk of 4 percent fat content. (Conclusions) It has been revealed that in order to increase the yield and quality of spring rape seeds, it is necessary to place them on the best forecrops. It was found that when 75 percent of rapeseed oil is mixed with 25 percent of diesel fuel, the obtained biodiesel is not inferior to diesel in terms of energy indicators. The article proves that when cultivating rapeseed for seeds on an area of 100 hectares, it is possible to produce 94.5 tons of biodiesel fuel, 106.0 tons of cake with an oil content of 5 percent and 8.4 tons of oil sludge, the estimated economic effect after sale is of 3,813,325 rubles.

scholarly journals Impact of foliar fertilizing on the white mustard productivity in the northeastern Forest-Steppe of Ukaraine

2019 ◽  
pp. 24-28
Author(s):  
A.V. Melnyk ◽  
S.V. Zherdetska ◽  
Shahid Ali ◽  
Gulam Shabir ◽  
S.O. Butenko
Keyword(s):  
Maximum Yield ◽  
Experimental Studies ◽  
Weather Conditions ◽  
Black Soil ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
White Mustard ◽  
Production Complex ◽  
Cultivation Technology ◽  
Training Research

The experimental studies were carried out on the fields of the Sumy NAU Training Research and Production Complex (TRPC) during 2016–2018.The soil of the experimental plot is typical deep-medium humus, large-dusty and medium-loam black soil on forest trees. The subject of the research was a white mustard variety of Oslava created at the Institute of Feed and Agriculture of the Podillya NAASU, entered in the Register of varieties suitable for cultivation in Ukraine in 2010. The aim of the research is to optimize the nutrition of the white mustard variety of Oslava through the complex application of mineral fertilizers and foliar fertilization under the conditions of the northeastern forest-steppe of Ukraine. The analysis of weather conditions, in particular the hydrothermal coefficient of Selyaninov (HTC), established that 2016 season was wet (HTC = 1.60), 2017 and 2018 were dry (HTC = 0.59 and 0.46). During the research, the cultivation technology was generally accepted in the experimental area, except for the elements studied. The results of the three-year study on the influence of foliar fertilizing under different mineral nutrition backgrounds on the yield of the white mustard variety Oslava are presented. It was found that the application of mineral fertilizers and complex fertilizers for the foliar feeding had a positive effect on the morphometric parameters of the white mustard, in particular, increased the plant height and the number of branches of the first order. The use of mineral fertilizers at the rate of N30P30K30 provided an increase in the yield by 0.34 t/ha, N60P60K60 – by 0.55 t/ha, N90P90K90 – by 0.61 t/ha on an average compared to the control. Therefore, for the maximum yield (2.14–2.21 t/ha) with a mass of 1000 seeds (5.39–5.54 g) of the white mustard under the conditions of the Northeastern Forest-Steppe of Ukraine, foliar fertilizing of Vuxal boron (3.0 l/ha) + Vuxal bioaminoplant 3.0 l/ha) and Spectrum B + Mo (2.0 l/ha) + Spectrum Ascorist (3.0 l/ha) should be applied on the background of N60-90P60-90K60-90, what provided an increase in the yield compared to the control of 0.58-0.65 t/ha.

scholarly journals ВПЛИВ ТЕХНОЛОГІЧНИХ ПРИЙОМІВ ВИРОЩУВАННЯ НА ФОРМУВАННЯ ПОКАЗНИКІВ ЯКОСТІ ЗЕРНА ПШЕНИЦІ ОЗИМОЇ В УМОВАХ ПІВНІЧНОГО СТЕПУ

2014 ◽  
pp. 67-73
Author(s):  
В. І. Козечко
Keyword(s):  
Protein Content ◽  
High Protein ◽  
Seeding Rate ◽  
High Protein Content ◽  
The Third ◽  
Maximum Productivity ◽  
Germinating Seeds ◽  
Spring Rape

Результати проведених експериментальних дослі-джень свідчать, що за вирощування різних сортівпшениці озимої після ріпаку ярого в умовах північногоСтепу України одержання найбільш якісного зерна(третього класу якості) забезпечує сівба 25 вереснята 5 жовтня. Сівба 5 та 15 вересня забезпечувалаодержання зерна, здебільшого, п’ятого й четвертогокласів якості. Із-поміж досліджуваних сортів пше-ниці озимої найбільшим вмістом білку (11,2–13,0 %) іклейковини (17,5–22,7 %) у зерні вирізнявся сорт Се-лянка. Найменшими ці показники були у сорту Подо-лянка – 10,6–12,5 та 17,1–21,9 % відповідно. Об¢ємхліба, отриманого з борошна пшениці озимої сортуСелянка, був найвищим. Так, у середньому за 2008–2010 рр. він коливався від 495 см3 за сівби 5 вереснянормою висіву 4 млн схожих насінин/га до 612 см3 засівби 5 жовтня цією ж нормою. Встановлено впливнорм висіву насіння на показники якості зерна. Так,найвищий вміст білку і клейковини в зерні, а такожоб’єм хліба відмічено на варіантах досліду, де сівбупроводили нормою 4 млн схожих насінин/га. Збіль-шення норми висіву призводило до зменшення данихпоказників. У середньому за роки досліджень найвищуврожайність формував сорт Селянка (4,89 т/га) засівби 25 вересня нормою 5 млн схожих насінин/га.Максимальну врожайність рослини сорту Золотоко-лоса – 4,20 та 4,19 т/га – формували, відповідно, засівби 5 жовтня нормою 6 млн схожих насінин/га та 25вересня нормою висіву 5 млн схожих насінин/га. Най-нижчу серед сортів урожайність формував сортПодолянка, що коливалася за період проведення до-сліджень у межах 2,99–3,75 т/га. Results of the conducted pilot researches testify that at cultivation of various sorts of wheat winter after a spring rape in the conditions of the northern Steppe of Ukraine, receiving the most qualitative grain, the third class of quality, provides sowing on 25 September and on 5 October. Sowing on 5 and 15 September provided grain, generally the fifth and fourth classes of quality. Among sorts of wheat winter which were studied in the experiences, the greatest protein content (11,2–13,0%) and glutens (17,5–22,7%) in grain Selyank's sort differed. The smallest Podolyank's sort of – 10,6–12,5 and 17,1–21,9% had these indicators respectively. The volume of the bread received from a flour of wheat of winter of a sort of Selyanka, was the highest. So, on the average for 2008–2010 it fluctuated from 495 cm3 when sowing on 5 September seeding rate of 4 million units germinating seeds/ha to 612 cm3 when sowing on 5 October the same norm. Influence of seeding rate on indicators of quality of grain is established. So, high protein content and glutens in grain, and also the volume of bread are noted on experience options where sowing carried out norm of 4 million units germinating seeds/ha. The increase in seeding rate led to reduction of these indicators. Average, over years of research, the highest yield sort Selyanka formed (4,89 t per ha) when sowing on 25 September norm of 5 million units germinating seeds/ha. The maximum productivity of a plant of a grade of Zolotokolosa – 4,20 and 4,19 t per ha formed, respectively, when sowing on 5 October norm of 6 million units germinating seeds/ha and on 25 September seeding rate of 5 million units germinating seeds/ha. The low among grades productivity was formed by a sort of Podolyanka at which it fluctuated, during carrying out researches, within 2,99–3,75 t per ha.

scholarly journals DYNAMICS OF FORMATION OF THE SQUARE OF BEETS PLANTS OF BEETS DEPENDING ON VARIETY SPECIAL FEATURES AND TERMS OF SEEDING UNDER CONDITIONS OF THE RIGHT-FOREST STEPPE OF UKRAINE

2019 ◽  
pp. 173-182
Author(s):  
Inna Palamarchuk
Keyword(s):  
Aerial Part ◽  
Root Formation ◽  
Weather Conditions ◽  
Forest Steppe ◽  
Sowing Time ◽  
The Third ◽  
Sowing Dates ◽  
Number Of Leaves ◽  
The Right ◽  
Sowing Period

The results of studies on the dynamics of the formation of the area of leaves of plants of beetroot canteen depending on varietal characteristics and sowing time in the conditions of the Forest-Steppe of Right-Bank Ukraine are presented. The dependence of the growth and development of beetroot plants on varietal characteristics and sowing dates, as well as on weather conditions that were in the studied time, was revealed. The largest number of leaves in the phase of intensive root formation was formed by plants with a sowing period of I decade of May: 13.3 pcs. / plant – Bordo Kharkivskiy, 13.1 pcs. / plant – Opolskiy. The greatest mass of the root crop in the phase of intensive root formation was planted at a sowing period of the third decade of April: the Bordo Kharkivskiy – 72.4 g, the variety Opolskiy – 43.5 g. The same pattern was observed when taking into account the mass of the aerial part of beetroot. In the Bordo Kharkivskiy variety, it varied from 92.4 g to 87.5 g depending on the sowing time, in the Opolskiy variety from 33.7 g to 31.7 g, that is, the beet plants of the Bordo Kharkivskiy cultivar formed a significantly larger mass of the aerial part in comparison with the Opolskiy variety. Plants were sown with the largest leaf area at a sowing period of the 3rd decade of April: in the Bordo Kharkivskiy – 1.2 – 4.0 thousand m2 / ha, in the Opolskiy variety – 1.0 – 2.3 thousand m2 / ha. According to the results of the crop accounting, it was found that it depended on the variety and sowing period of beetroot. On average, over the years of research, the highest yield was observed with a sowing period of the third decade of April: 63.1 t / ha for the Bordo Kharkivskiy variety, 55.9 t / ha for the Opolskiy variety.

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