scholarly journals Special aspects of the development of black currant bushes depending on weediness level in the Ukrainian polissia

2020 ◽  
Vol 10 (4) ◽  
pp. 18-22
Author(s):  
A.V. Bakalova ◽  
N.V. Hrytsiuk ◽  
N.M. Tkalenko
Keyword(s):  
Species Composition ◽  
Amaranthus Retroflexus ◽  
Matter Content ◽  
Dry Matter Content ◽  
Plant Tolerance ◽  
Weed Species ◽  
Couch Grass ◽  
Black Currant ◽  
Pests And Diseases ◽  
Negative Effect

We studied the weeds species composition in the black currantplantations of Ukrainian Polissia. The species composition of weeds has been analyzedand is was typical for thisarea. Twelve weed species were found during the study; they included annual (89.8%) and perennial ones (10.2%). A number of species were prevalent among the perennial weeds, namely common dandelion (Taraxacum officinaleWigg.) –2.5 pcs/m2, field milk thistle (Sonchus arvensisL.) –2.8 pcs/m2, couch grass (Elytrigia repensL.) –8.8 pcs/m2, and field sorrel (Rumex acetostellaL.) –3.2 pcs/m2. The most common annual species of weeds were lamb’s quarters (Chenopodium albumL.) –44.2 pcs/m2, shepherd’s purse (Capsella bursa-pastorisL.) –36.3 pcs/m2, smooth meadow grass (Poa annuaL.) –25.1 pcs/m2, and Amaranthus retroflexus(Amaranthus retroflexusL.) –19.6 pcs/m2. Throughout the study period, the least common weeds in black currant plantations were chickweed (Stellaria mediaL.) –14.8 pcs/m2, annual nettle (Urtica urensL.) –1.6 pcs/m2, quickweed (Galinsoga parvifloraCav.) –9.1 pcs/m2, and field pansy (Viola arvensisMurr.)–2.6 pcs/m2. We registered that with theweediness of 8-9 points the area of black currant leaves from a bush decreases by 1.9 m2, while the chlorophyll content in the leaves reduced by 20.8mg/100g. On the contrary, the dry matter content inleaves increasedfrom 29 to 61%. Significant negative effect of weeds on the activity of black currant and leads to a decrease in plant tolerance againstthe sucking pests and diseases. Thus, under high and very high weediness (8-9 points),the development of anthracnose (Gioesporium ribisMont.) was 32–48%, powdery mildew (Sphaerotheca mors Uvae.) and septoria blight (Mycosphaerella ribisLind.) were 16 and 15% respectively. We proved that a high weediness level reduces the yield of berriesby 56%in black currant plantations.

The Interaction of Soybean (Glycine max) and Five Weed Species in the Greenhouse

Weed Science ◽  
1985 ◽  
Vol 33 (5) ◽  
pp. 669-672 ◽  
Author(s):  
Janet L. Shurtleff ◽  
Harold D. Coble
Keyword(s):  
Glycine Max ◽  
Dry Matter ◽  
Dry Weight ◽  
Amaranthus Retroflexus ◽  
Matter Content ◽  
Dry Matter Content ◽  
Weed Species ◽  
Common Ragweed ◽  
Common Lambsquarters ◽  
Redroot Pigweed

The influence of relative planting date on the growth of common cocklebur (Xanthium pensylvanicumWallr. ♯ XANST), common ragweed (Ambrosia artemesiifoliaL. ♯ AMBEL), sicklepod (Cassia obtusifoliaL. ♯ CASOB), and redroot pigweed (Amaranthus retroflexusL. ♯ AMARE) grown in competition with soybean [Glycine max(L.) Merr. ‘Bragg’] was studied in the greenhouse. Increases in dry matter and height were slower for the five weed species than for soybean throughout the period of the study. The root: shoot ratio of soybean was the highest of any plant in the study, while common ragweed, common cocklebur, common lambsquarters, and sicklepod were intermediate, and redroot pigweed was the lowest. Soybean dry weight was always reduced when grown in competition with a weed. Soybean dry-matter production was reduced most when weeds were planted 2 weeks before soybean, especially with common cocklebur and common lambsquarters. Weed dry-matter content was severely reduced when the weed seed were planted simultaneously with or following soybean. Soybean height was usually reduced by competition with the weeds. The height of common ragweed was increased, however, when planted simultaneously with soybean. Common lambsquarters, redroot pigweed, and common ragweed heights were increased when planted 2 weeks prior to soybean.

scholarly journals The Integrated Effect Between Low Doses of Herbicide Glyphosate and Plant Extracts in Management of Carrot Crop Daucus carota L. var. sativa Weeds

2021 ◽  
Vol 39 (3) ◽  
Author(s):  
Amjad Al Youssef ◽  
◽  
Ghassan Ibrahim ◽  
Anwar Al Mouemar ◽  
◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Plant Extracts ◽  
Amaranthus Retroflexus ◽  
Matter Content ◽  
Cyperus Rotundus ◽  
Recommended Dose ◽  
Dry Matter Content ◽  
Weed Species ◽  
Daucus Carota L ◽  
Herbicide Glyphosate

This study was carried out at Abu Jarash Farm and Weed Laboratory, Faculty of Agriculture, Damascus University, during 2017 winter to investigate the integrated effect of the non-selective herbicide Glyphosate (360 g/l) (Lancer®) and plant extracts of some weeds: sorghum (Sorghum bicolor L.), alfalfa (Medicago sativa L.) and bermuda grass (Cynodon dactylon L.) by using one third and one fourth of the recommended doses of the herbicide mixed with plant extracts for weed management of plots planted with carrot. The integration between herbicide and plant extracts led to 100% weed control when the herbicide was used at 25% of the recommended dose, and was equally effective to that of the recommended dose. The benefits are cost reduction and decrease of harmful effects of synthetic herbicides to the environment. On the other hand, Sorghum bicolor extract was significantly effective in controlling all tested weed species (82.1% effectiveness on Chenopodium album (most sensitive), plant height of wild barley Hordeum murinum L. was 3.8 cm, dry matter content of 4.96% for purple nutsedge, Cyperus rotundus L. and 6.58% for hairy amaranth, Amaranthus retroflexus L. Keywords: Integration, herbicides, plant extracts, reduced doses, weeds

scholarly journals Effect of Clay, Soil Organic Matter, and Soil pH on Initial and Residual Weed Control with Flumioxazin

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1326
Author(s):  
Calvin F. Glaspie ◽  
Eric A. L. Jones ◽  
Donald Penner ◽  
John A. Pawlak ◽  
Wesley J. Everman
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Weed Control ◽  
Soil Ph ◽  
Organic Matter Content ◽  
Amaranthus Retroflexus ◽  
Matter Content ◽  
Weed Species ◽  
Soil Organic Matter Content ◽  
Field Soils

Greenhouse studies were conducted to evaluate the effects of soil organic matter content and soil pH on initial and residual weed control with flumioxazin by planting selected weed species in various lab-made and field soils. Initial control was determined by planting weed seeds into various lab-made and field soils treated with flumioxazin (71 g ha−1). Seeds of Echinochloa crus-galli (barnyard grass), Setaria faberi (giant foxtail), Amaranthus retroflexus (redroot pigweed), and Abutilon theophrasti (velvetleaf) were incorporated into the top 1.3 cm of each soil at a density of 100 seeds per pot, respectively. Emerged plants were counted and removed in both treated and non-treated pots two weeks after planting and each following week for six weeks. Flumioxazin control was evaluated by calculating percent emergence of weeds in treated soils compared to the emergence of weeds in non-treated soils. Clay content was not found to affect initial flumioxazin control of any tested weed species. Control of A. theophrasti, E. crus-galli, and S. faberi was reduced as soil organic matter content increased. The control of A. retroflexus was not affected by organic matter. Soil pH below 6 reduced flumioxazin control of A. theophrasti, and S. faberi but did not affect the control of A. retroflexus and E. crus-galli. Flumioxazin residual control was determined by planting selected weed species in various lab-made and field soils 0, 2, 4, 6, and 8 weeks after treatment. Eight weeks after treatment, flumioxazin gave 0% control of A. theophrasti and S. faberi in all soils tested. Control of A. retroflexus and Chenopodium album (common lambsquarters) was 100% for the duration of the experiment, except when soil organic matter content was greater than 3% or the soil pH 7. Eight weeks after treatment, 0% control was only observed for common A. retroflexus and C. album in organic soil (soil organic matter > 80%) or when soil pH was above 7. Control of A. theophrasti and S. faberi decreased as soil organic matter content and soil pH increased. Similar results were observed when comparing lab-made soils to field soils; however, differences in control were observed between lab-made organic matter soils and field organic matter soils. Results indicate that flumioxazin can provide control ranging from 75–100% for two to six weeks on common weed species.

OBTAINING FRUIT AND BERRY EXTRACTS WITH HIGH ANTIOXIDANT ACTIVITY WHEN USING ULTRASONIC RADIATION

2018 ◽  
Author(s):  
Н.Б. ЕРЕМЕЕВА ◽  
Н.В. МАКАРОВА
Keyword(s):  
Antioxidant Activity ◽  
Raw Materials ◽  
Matter Content ◽  
Dry Matter Content ◽  
Black Currant ◽  
Ultrasonic Radiation ◽  
Microbiological Parameters ◽  
High Antioxidant Activity ◽  
Berry Extracts ◽  
Physical And Chemical

Подобраны оптимальные параметры для экстракции плодов и ягод черной смородины, малины, вишни, черноплодной рябины при ультразвуковом излучении 35 кГц с целью получения плодово-ягодных экстрактов с высокой антиоксидантной активностью. На основании экспериментальных данных выбраны технологические режимы процесса: экстрагирование сырья 75%-м этиловым спиртом при соотношении сырье : растворитель 1 : 10, температуре (40 ± 5)°C в течение 90 мин. Экстракты концентрируют под вакуумом до содержания сухих веществ 65%. Дана технологическая схема получения плодово-ягодных экстрактов. Полученные экстракты обладают высокой антиоксидантной активностью, содержат большое количество фенольных веществ, флавоноидов и антоцианов; по органолептическим, физико-химическим и микробиологическим показателям соответствуют нормативной документации. The optimal parameters for extraction of fruits and berries of fruits and berries of black currant, raspberry, cherry, chokeberry with ultrasonic radiation of 35 kHz in order to obtain fruit and berry extracts with high antioxidant activity are selected. Based on the experimental data, the technological modes of the process are selected: extraction of raw materials with 75% ethyl alcohol at a ratio of raw materials: solvent 1: 10, temperature (40 ± 5)°C for 90 min. The extracts are concentrated under vacuum to a dry matter content of 65%. Technological scheme of fruit and berry extracts is given. The obtained extracts have a high antioxidant activity, contain a large amount of phenolic substances, flavonoids and anthocyanins; organoleptic, physical and chemical and microbiological parameters correspond to the normative documentation.

scholarly journals The effect of ecological growing on the potatoes yield and quality

2011 ◽  
Vol 51 (No. 9) ◽  
pp. 397-402 ◽  
Author(s):  
K. Hamouz ◽  
J. Lachman ◽  
P. Dvořák ◽  
V. Pivec
Keyword(s):  
Mechanical Damage ◽  
Field Trials ◽  
Matter Content ◽  
Point Of View ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Yield And Quality ◽  
Negative Effect ◽  
Cultivated Potatoes

In the years 1995–1997 the effect of ecological growing on the yield and selected parameters of quality of consumer potatoes (in comparison with conventional way) were investigated. The ecological way of growing differed in the lack of chemical protection against diseases and pests and industrial fertilizers. Field trials were realised with seven varieties (Impala, Karin, Agria, Korela, Rosella, Santé and Ornella) on two sites (Uhříněves and Valečov). The ecological way of growing had markedly negative effect on the yield (decrease by 36%). In qualitative parameters the ecological way increased inconclusively polyphenol content (by 10.2%), decreased inconclusively nitrate content (by 11.0%) and reducing sugars (by 22%). It did not affect dry matter content, resistance of tubers to mechanical damage, table value and glycoalkaloid content. Variety Santé achieved the best results from the point of view of the yield and majority of qualitative parameters among varieties. Qualitative parameters of ecologically cultivated potatoes were significantly affected by the year of cultivation.

scholarly journals Wheat phyllosphere yeasts degrade propiconazole

2019 ◽  
Author(s):  
Katarzyna Kucharska ◽  
Urszula Wachowska ◽  
Sylwester Czaplicki
Keyword(s):  
Rhodotorula Glutinis ◽  
Matter Content ◽  
Dry Matter Content ◽  
Wheat Seedlings ◽  
Disk Diffusion Test ◽  
Commercial Mixture ◽  
Yeast Community ◽  
Negative Effect ◽  
Wheat Leaves

Abstract Background: Yeasts, which are ubiquitous in agroecosystems, are known to degrade various xenobiotics. The aim of this study was to analyze the effect of fungicides on the abundance of natural yeast communities colonizing winter wheat leaves, to evaluate the sensitivity of yeast isolates to fungicides in vivo, and to select yeasts that degrade propiconazole. Results: Fungicides applied during the growing season generally did not affect the counts of endophytic yeasts colonizing wheat leaves. Propiconazole and a commercial mixture of flusilazole and carbendazim decreased the counts of epiphytic yeasts, but the size of the yeast community was restored after 10 days. Epoxiconazole and a commercial mixture of fluoxastrobin and prothioconazole clearly stimulated epiphyte growth. The predominant species isolated from leaves were Aureobasidium pullulans and Rhodotorula glutinis. In the disk diffusion test, 14 out of 75 yeast isolates were not sensitive to any of the tested fungicides. After 48 hours of incubation in an aqueous solution of propiconazole, the Rhodotorula glutinis Rg 55 isolate degraded the fungicide in 85%. Isolates Rh. glutinis Rg 92 and Rg 55 minimized the phytotoxic effects of propiconazole under greenhouse conditions. The first isolate contributed to an increase in the dry matter content of wheat seedlings, whereas the other reduced the severity of chlorosis. Conclusion: Not sensitivity of many yeast colonizing wheat leaves on the fungicides and the potential of isolate Rhodotorula glutinis Rg 55 to degrade of propiconazole was established. Yeast may partially eliminate the ecologically negative effect of fungicides. Keywords: wheat leaves, fungicide, Aureobasidium, Rhodotorula.

scholarly journals Increased Levels of Calcium in the Nutrient Solution Improves the Postharvest Life of Potted Roses

1997 ◽  
Vol 122 (6) ◽  
pp. 863-868 ◽  
Author(s):  
Kirsten Rasmussen Starkey ◽  
Asger Roer Pedersen
Keyword(s):  
Nutrient Solution ◽  
Matter Content ◽  
The Other ◽  
Postharvest Quality ◽  
Dry Matter Content ◽  
Grey Mold ◽  
Negative Effect ◽  
Postharvest Life ◽  
Production Period ◽  
The Rose

Experiments were performed on miniature potted roses (Rosa) to investigate whether increasing the Ca concentration in the nutrient solution would increase the Ca concentration in the rose plant, resulting in better postharvest quality. The plants were watered during the whole production period with six different nutrient solutions with Ca at 1.1 to 4.4 mm and varying meq ratios between Ca and the cations. During the postharvest period, plant characteristics were recorded at days 0, 11, 14, 18, and 25. Increasing Ca in the nutrient solution significantly increased the Ca concentration of the plants. However, the NH4 level (2% to 5% vs. 22% to 25%) also influenced the Ca concentration of the plants. Leaves had the highest Ca concentration, which was more than twice the level in flowers and buds, stems and roots. There were no differences in dry matter content between treatments in roots or tops at marketing stage. At the start of the postharvest treatment (day 0), plants from the highest Ca treatment had significantly fewer flowers than those in all of the other treatments due to delayed development. The number of good flowers increased from days 0 to 14 irrespective of treatment, while a further increase to day 18 was observed in plants from the three highest Ca treatments (low NH4) due to a negative effect on flower longevity of low Ca and high NH4 in the three low-Ca treatments. By day 25, the number of good flowers had decreased markedly in all treatments, but plants from the second-highest Ca treatment had significantly more good flowers than plants from the other treatments. Flower wilting was due to infection by grey mold (Botrytis cinerea) and a physiological condition that caused wilting that began at the petal edges with a dark discoloration. Infection with grey mold was negatively correlated with Ca concentration in the flowers. The physiological wilting was seen earlier in plants from the treatments with high NH4 and is probably not related to Ca concentration in the flowers.

scholarly journals EVOLUTION OF WEED FLORA IN SUGAR BEET CROPS UNDER DIFFERENT DEGREESOF ANTHROPOGENIC LOAD IN THE 20TH CENTURY AND EARLY 21STCENTURY

2021 ◽  
pp. 5-12
Author(s):  
D.V. Bochkarev ◽  
◽  
Yu.N. Nedayborshch ◽  
A.N. Nikolskiy ◽  
A.N. Slugin ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Species Composition ◽  
Crop Protection ◽  
Crop Productivity ◽  
Early Spring ◽  
Weed Species ◽  
Couch Grass ◽  
The North ◽  
Elytrigia Repens ◽  
Noxious Weed

The south of the Non-Chernozem Region is the north-ern boundary of sugar beet production in the Russian Fed-eration. An important factor restraining the growth of crop productivity is the high weed infestation of crops. To devel-op an effective system of crop protection against weeds, it is necessary to study their species composition in order to determine the most occurring and noxious weed species. The available data of geobotanical surveys since the 1930s showed that at different levels of anthropogenic impact the core of the most noxious weed species was formed. Under extensive agriculture conditions, the following species were the most widespread ones: Elytrigia repens(L.) Nevski, Equiseeum arvenseL., Sonchus arvensis L., Convolvulus arvensisL., Cirsium setosum(Willd.) Besser., Artemisia absinthiumL., Chenopodium albumL., Polygonum avicula-reL., Apera spica-ventiL., etc. The introduction of mechan-ical plowing decreased the population density of A. spica-ventiL., Dracocephalum thymiflorumL., and P. aviculareL. Further intensification of agriculture contributed to the narrowing of the weed species composition. Avena fatuaL., not previously found, appeared in abundance in crops and surpassed all other species in terms of number and frequency of occurrence, as well as species resistant to herbicides from the 2.4-D dimethylamine group -Poaceae, Galium aparineL., Tripleurospermum inodorum(L.) Sch. Bip. Couch grass(Elytrigia repens(L.) Nevski) was com-pletely substituted. Currently, the agrophytocenoses con-tain the most harmful rhizome and root-sucker weeds and spring species. Thefollowing early spring weeds are par-ticularly harmful and highly spread in crops: common wild oat (Avena fatuaL.), hemp-nettle species (Galeopsis), and Chenopodium albumL.; overwintering weeds resistant to 2.4-D dimethylamine which seeds accumulate in the soil during the cultivation of other crops in crop rotations where weed control is not so intense.

scholarly journals Quality of vacuum-packed potato in dependence of variety and applied mechanical tuber peeling systems

2020 ◽  
pp. 15-19
Author(s):  
С.В. Мальцев ◽  
Д.В. Абросимов
Keyword(s):  
Dry Matter ◽  
Operating Mode ◽  
Matter Content ◽  
Vacuum Packaging ◽  
Dry Matter Content ◽  
Potato Varieties ◽  
Experimental Base ◽  
Negative Effect ◽  
Vacuum Package

В статье отражены результаты изучения влияния сорта и различных систем механической очистки клубней на качество картофеля в вакуумной упаковке. Исследования проводились в 2015–2018 годах на экспериментальной базе ФГБНУ ВНИИКХ (Московская область, Люберецкий район). Опыт двухфакторный: фактор А – сорт (110 сортообразцов), фактор Б – тип механической системы очистки клубней (ножевая, абразивная и перфорированная ячеистая). Качество продукта по показателям устойчивости мякоти к потемнению и сохранности тургора клубней определяли через 5, 10 и 15 дней после вакуумирования при переработке в сентябре, январе и апреле. Температура хранения сырья 5–7 °С, относительная влажность воздуха в хранилище 90–95%. В результате исследований установлено, что сорта картофеля для вакуумной упаковки должны соответствовать следующим требованиям: содержание сухого вещества не ниже 20%; отходов при механической очистке не более 20% при сентябрьском сроке переработки и использовании системы очистки ножевого типа; устойчивость мякоти клубней к потемнению не ниже 7 баллов через 15 дней хранения в вакуумной упаковке; предпочтительный цвет мякоти – кремовый и желтый. Выявлено, что глубина выреза более 5 мм на поверхности клубней при ручной доочистке крайне негативно влияет на качество вакуумированного картофеля. Из 110 изученных сортов для вакуумной упаковки рекомендованы 40, соответствующие вышеуказанным требованиям, например, такие, как Лилея, Ломоносовский, Люкс, Утенок, Холмогорский, Амур, Бриз, Былина Сибири, Гала, Горняк, Манифест, Памяти Лорха, Русский сувенир, Лина, Барин, Златка, Надежда, Сиреневый туман, Фаворит, Фрителла. Установлено, что использование рекомендуемых сортов и механической системы очистки ножевого типа (режим работы 80 сек.), по сравнению с абразивным и ячеистым, способствует снижению отходов при переработке в среднем за сезон на 4,8% при одновременном сохранении высокого качества конечного продукта. The article presents the results of studying the influence of potato varieties and various mechanical tuber peeling systems on quality of vacuum-packed potato. Researches were conducted in 2015–2018 at the experimental base of Lorch Potato Research Institute (Moscow region, Lyuberetsky district). Two-factor experiment: factor A – potato variety (amount 110), factor B – type of mechanical tuber peeling system (blade, abrasive and perforated cellular). The quality of the product according to the indicators of pulp darkening resistance and the safety of the tuber turgor was determined 5, 10 and 15 days after vacuuming when processing in September, January and April. Potato store temperature was 5–7 °C, the relative humidity in the storage – 90–95%. As a result of research, it was found that potato varieties suitable for vacuum packaging must meet the following requirements: dry matter content not less than 20%; losses during mechanical peeling not more than 20% when processing in September and using a blade-type peeling system; resistance of the tuber pulp to darkening not less than 7 points after 15 days of storage in a vacuum package; the preferred color of pulp is cream and yellow. It was found that the depth of the cutout more than 5 mm on the surface of tubers during manual post-peeling has a severe negative effect on the quality of vacuumed potatoes. From 110 studied varieties, 40 ones which meet the above mentioned requirements were recommended for vacuum packaging, such as Lilea, Lomonosovsky, Lux, Utenok, Holmogorsky, Amur, Briz, Bilina Sibiri, Gala, Gornyak, Manifest, Pamyaty Lorcha, Russky suvenir, Lina, Barin, Zlatka, Nadezhda, Sirenevy tuman, Favorite, Fritella. It was found that the use of recommended varieties and a mechanical peeling system of blade type (operating mode 80 sec.), in comparison with abrasive and cellular, helps to reduce losses while processing by an average of 4.8% per season and lets to maintain the high quality of the final product.

scholarly journals Weed Species Composition of Agrophytocenoses in Altai Krai

2021 ◽  
Vol 7 ◽  
pp. 93-102
Author(s):  
Tatiana A. Terekhina ◽  
Alyona V. Nochevnaya ◽  
Natalia V. Ovcharova ◽  
Irina A. Lapshina
Keyword(s):  
Species Composition ◽  
Chenopodium Album ◽  
Amaranthus Retroflexus ◽  
Lower Percentage ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
The Road ◽  
Poaceae Family ◽  
Weed Infestation ◽  
Brassicaceae Family

The article reviews the weed species composition of oat, sunflower, wheat, buckwheat, rapeseed and flax agrophytocenoses on 390 fields in 21 districts of Altai Krai: Aleyskiy, Bistroistokskiy, Baevskiy, Burlinskiy, Kamenskiy, Kosikhinskiy, Krutikhinskiy, Kytmanovskiy, Loktevskiy, Mamontovskiy, Novichikhinskiy, Pankrushikhinskiy, Rebrikhinskiy, Rubtsovskiy, Shipunovskiy, Sovetskiy, Tretyakovskiy, Troitskiy, Tyumentsevskiy, Zarinskiy, and Zonalniy. The studied fields were surveyed by the route method, which involved the study of the plot by examining it along two diagonals and four sides, when the area did not exceed 20.0 hectares. Larger fields were divided into plots of 20.0 hectares before the survey. The areas adjacent to roads were examined most carefully, since it is often from the road that the field becomes infested. We used the ArcGis program to compile original maps for the main weed plant species. It was found that out of 45 species encountered, only 10 play a significant role in weed infestation and have a high frequency rate: aboriginal Convolvulus arvensis, Amaranthus retroflexus, Euphorbia virgata, Lathyrus tuberosus, Chenopodium album, as well as such adventive species as Fallopia convolvulus, Setaria pumila, Panicum miliaceum subsp. ruderale, Avena fatua and Echinochloa crusgalli. The largest number of species accounts for the Poaceae family (33.3%). The Brassicaceae family is characterized by a slightly lower percentage of participation in the adventitious flora (27.7%). Other families are not so well represented (by 1-2 species each).

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