scholarly journals Uptake of more important mineral components by common field weeds on loess soils

2013 ◽  
Vol 39 (1) ◽  
pp. 129-141 ◽  
Author(s):  
Leszek Malicki ◽  
Czesława Berbeciowa
Keyword(s):  
Spring Barley ◽  
Chenopodium Album ◽  
Cultivated Plants ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Stellaria Media ◽  
Sugar Beets ◽  
Polygonum Convolvulus ◽  
Mineral Components ◽  
Sonchus Arvensis

We have determined the contents of N, P, K, Ca, Mg, Na, Fe, Cu, Mn and Zn in winter wheat, spring barley, sugar beets and winter rape, as well as in the most common weed species infesting these crops. It was established that the percentage of mineral components in the dry matter of the majority of weeds is higher than in that of the cultivated plants. The most dangerous weed species competing with plants for the investigated nutrients were: <i>Chenopodium album, Cirsium arvense, Convolvulus arvensis, Polygonum convolvulus, Sonchus arvensis</i> and <i>Stellaria media</i>.

RESULT OF HERBICIDES APPLIED AGAINST OF WEEDS IN SOYBEAN FIELD

2015 ◽  
Vol 13 (2) ◽  
pp. 76-79
Author(s):  
O Ariunaa ◽  
M Otgonsuren
Keyword(s):  
Chenopodium Album ◽  
Herbicide Application ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Couch Grass ◽  
Soybean Field ◽  
Small Areas ◽  
Polygonum Convolvulus ◽  
Perennial Weeds ◽  
Field Bindweed

Herbicides, if used properly, are safe and effective in controlling weeds in soybean. The choice of herbicide, however, depends on the predominant weed species and the availability of the herbicide. Chemical control is currently the most widely used control for soybean crops, due to its ease of control and to the small areas planted in Mongolia. In the soybean field the 15species of weeds belonging to 9 families, 12 genus including 62.5 % annual, 37.5%perennial weeds are distributed.The major grassy weeds; Common millet-(Panicummiliaceum L), Couch grass-(Agropyronrepens L), Bristlegrass-(Seteriaviridis L) sp and broadleaved weeds Redroot Pigweed-(Amaranthtusretro flexus),lambs guarters-(Chenopodium album), AristateGoosfoot-(Chenopodiumaristatum L), Black bindweed-(Polygonum convolvulus), Mallow weed-(Malvamochileviensis Down), Field bindweed-(Convolvulus arvensis), Bristhly thistle-(Cirsiumsetosum ), Dwarf bifurcate cinquefoil -(Potentillabifurca), Perennial Sowthisle-(Sonchusarvensis L) weeds have been distributed in the soybean field.In soybean field the Forward herbicide were applied in doses of 1.0-1.2l/ha have reduced the number of weeds by 90.1-91.6%, weight by 59.5-66.1% and super herbicide Gallantsuper applied in doses of 0.45-0.65l/ha have reduced the number of weeds by 91.0-95.0%, weight by 39.5-59.8% while Cobra herbicide applied in doses of 0.45-0.55l/ha used in broadleaved weed distributed field, have reduced the number of weeds by 90.2-94.6% and weight by 42.7-50.7%. The herbicide application increased of yield hectare by 3.6-9.0 center.Mongolian Journal of Agricultural Sciences Vol.13(2) 2014: 76-79

scholarly journals Reaction of some weed species to herbicides in sugar beet cultivation

2013 ◽  
Vol 37 (1) ◽  
pp. 63-73 ◽  
Author(s):  
H. Domańska ◽  
L. Leska ◽  
Z. Łęgowiak ◽  
G. Maćkowiak
Keyword(s):  
Sugar Beet ◽  
Chenopodium Album ◽  
Climatic Conditions ◽  
Weed Species ◽  
Sugar Beets ◽  
Polygonum Convolvulus ◽  
Herbicide Activity

In the years 1975-1980, on the Experimental Farm Chylice fields of the Warsaw Agricultural University, herbicide activity was evaluated on commonly appearing weed species in sugar beet cultivation. The most frequent weeds were: <i>Chenopodium album, Echinochloa crus-galli, Polygonum convolvulus</i> and <i>Polygonum lapatifolium</i>. Preemergence use of chloridazon and furthermore postemergence use of phenmedipham were most effective in control. Metolachlor or bentiocarb mixed with metamitron and chloridazon were effective too. It was found that 70% control of <i>Chenopodium album</i> increased crops of sugar beets by about 25% on the basis of two years experiments (1979-1980), differing in quantity and periods of rainfall, a visible dependence of herbicide effectiveness on climatic conditions was demonstrated.

scholarly journals Main weed species of the Republic of Bashkortostan: position on environmental gradients and agrobiological groups

2018 ◽  
Vol 7 (4) ◽  
pp. 134-138
Author(s):  
Gulnaz Rimovna Khasanova ◽  
Sergey Maratovich Yamalov ◽  
Maria Vladimirovna Lebedeva
Keyword(s):  
Environmental Gradients ◽  
Chenopodium Album ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Republic Of Bashkortostan ◽  
Ordination Analysis ◽  
Floristic Analysis ◽  
The Republic ◽  
Well Differentiated ◽  
Sonchus Arvensis

The paper presents a study of the main weed species in the Republic of Bashkortostan according to the results of a floristic analysis of 1170 geobotanical releves. The authors define 30 species, their constancy is more than 20%. Five species of dicotyledonous and 1 species of monocotyledonous plants Convolvulus arvensis , Chenopodium album , Cirsium setosum , Fallopia convolvulus , Avena fatua , Sonchus arvensis are characterized with the greatest values of occurrence (higher than 50%). According to the results of the ordination analysis and ANOVA the considered species are well differentiated on the gradients of the factors of moistening, richness of the soil and a crop. Among agrobiological groups of weed species the annual and creeping-rooted weeds prevail.

Efficacy of some herbicides in wheat crop

Pesticidi ◽  
2002 ◽  
Vol 17 (1-2) ◽  
pp. 23-29
Author(s):  
Ljiljana Radivojevic ◽  
Radmila Stankovic-Kalezic ◽  
M. Budimir
Keyword(s):  
Winter Wheat ◽  
Chenopodium Album ◽  
Field Trials ◽  
Wheat Crop ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Stellaria Media ◽  
Galium Aparine ◽  
Winter Wheat Crop ◽  
Fumaria Officinalis

In 2001 and 2002 field trials were carried out to evaluate efficacy of eight herbicides, alone or in the combinations, in winter wheat crop, in the Juzni Banat region. The next herbicides were examined: 2,4-D, Fluroksypyr Tribenuronmethyl, 2,4-D+Florasulam, Bentazon+Dicamba, Triasulfuron+Dicamba lodosulphuron-methylodium+Amidosulphuron Herbicides were applied after tillering of wheat was over. More frequent weed species were: Anthemis arvensis, Chenopodium album, Cirsium arvense, Convolvulus arvensis Delphinium consolida, Fumaria officinalis, Galium aparine, Lamium purpureum Polygonum convolvulus, Ranunculus arvensis, Sinapis arvensis, Stellaria media, Veronica polita i Viola tricolor. The most sensitive weed species to all herbicides were S. arvensis and Ch. album. The most tolerant was G. aparine (exept to fluroxipyr). The other species were less sensitive and herbicides eficacy were good or satisfactory, exept to V. polita and D. consolida. These results sugest that all applied herbicides could be successful in broad leaves weed control in the winter wheat crop in the Juzni Banat region.

scholarly journals „Flax specialists”-weed species extinct in Poland?

2010 ◽  
Vol 61 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Krzysztof Heller
Keyword(s):  
Chenopodium Album ◽  
Weed Species ◽  
Stellaria Media ◽  
Fibre Flax ◽  
The Past ◽  
Thlaspi Arvense ◽  
Polygonum Convolvulus ◽  
Root Crops ◽  
Weed Communities ◽  
Made In

„Flax specialists”-weed species extinct in Poland? The results of a research on segetal weed communities in fibre flax in Poland are presented, with respect to different regions of cultivation, and changes in the level of infestation during the past forty years. Observations on composition and abundance of weed infestations were made in fields in six experimental farms at the Institute of Natural Fibres and Medicinal Plants. The observations conducted in the period 1967-2008 did not show the occurrence of weed species from the group of so-called "flax specialists": Lolium remotum Schrank, Spergula arvensis L. subsp. maxima (Weiche) O. Schwarz, Camelina alyssum (Mill.) Thell. and Cuscuta epilinum Weihe Ex Boenn. In Poland, weed populations in fibre flax consist of species typical for cereals and root crops: Chenopodium album L., Polygonum convolvulus L., Viola arvensis Murr., Stellaria media Vill., Lamium amplexicaule L., Thlaspi arvense L., Elymus repens (L.) Gould, and Polygonum nodosum Pers.

scholarly journals THE HARMFULNESS OF RHIZOME AND CREEPING WEEDS IN CROPS OF WINTER WHEAT AND SPRING BARLEY IN THE FOREST-STEPPE SOUTH OF THE NON-CHERNOZEM ZONE

2020 ◽  
Vol 103 (3) ◽  
pp. 182-187
Author(s):  
A. N. Nikolskiy ◽  
D. V. Bochkarev ◽  
T. F. Devyatkina ◽  
Y. N. Nedajborshch ◽  
V. D. Bochkarev
Keyword(s):  
Population Density ◽  
Winter Wheat ◽  
Spring Barley ◽  
Threshold Level ◽  
Cultivated Plants ◽  
Forest Steppe ◽  
Convolvulus Arvensis ◽  
Lower Tier ◽  
Sonchus Arvensis ◽  
High Level

One of the reasons for the decrease in the yield of winter wheat and spring barley is the significant distribution in the crops of rhizome and root spawn weeds. The high competitiveness of weeds is largely determined by the features of their mineral nutrition. The accumulation of K2O in the Cirsium setosum and Sonchus arvensis exceeded the accumulation in cultivated plants twice. The nitrogen content in the roots and rhizomes of weeds was 1.5–2 times higher than the content of cultivated plants. The total removal of nutrients by weeds is influenced by their tier. Weed plants, intensively growing in the middle and upper tiers, contributed to a greater removal of nutrients from the soil. The removal of nitrogen was 14–43 % of the removal of cultivated plants, phosphorus – 4–12 %, potassium – up to 80 % of the removal of culture. A significant decrease (> 10 %) in yield is observed at a population density of 5–10 weeds/m2 in the lower tier. Winter wheat was more stable. A reduction of 10 % with 11–15 weeds/m2 of the lower tier. A decrease in plant productivity by 10–15 % with a population density of 5–10 weeds/m2. The calculation of the economic threshold level (ETL) at the level of 5 % yield loss for the lower tier ranged from 6–8 weeds/m2, at the level of 10 % loss to 8–12 weeds/m2. ETL (5 %) for weeds of medium and high level for Cirsium setosum in crops of spring barley – 2 weeds/m2 and in winter wheat crops – 4 weeds/m2; Equisetum arvense – 4 and 5 weeds/m2, Sonchus arvensis – 2 and 4 weeds/m2, Convolvulus arvensis – 5 and 5 weeds/m2, respectively

scholarly journals EXAMINATION OF THE WEED FLORA OF RUDER HABITATS AND THE POSSIBILITY OF SUPPRESSION WITH HERBICIDES

2018 ◽  
Vol 6 (4) ◽  
pp. 329-332
Author(s):  
Milić Vojinović ◽  
Jelica Živić ◽  
Sanja Perić ◽  
Miroljub Aksić
Keyword(s):  
Chenopodium Album ◽  
Working Environment ◽  
Xanthium Strumarium ◽  
Weed Species ◽  
Construction Sites ◽  
Convolvulus Arvensis ◽  
Human Settlements ◽  
Time Of Application ◽  
Vegetation Complex ◽  
Selection Of

Ruderal flora, as well as the vegetation that flora forms, represent an extremely dynamic floristic-vegetation complex and arean integral part of the most immediate living and working environment of human. It is formed and developed mainly in human settlements, as well as in the other anthropogenic environments that are occasionally or permanently under direct or indirect influence of various forms of human activity. Ruderal vegetation is found not only directly around the settlements, but also around all urban and accompanying facilities: along roads, paths and fences around houses, yards, walls and roofs, in avenues, on ruins, construction sites, landfills, along railway tracks, road and defense embankments, on wet and nitrified banks of rivers, near human settlements, in abandoned lawns, on the street walks with sandy areas, cemeteries, in degraded pastures, forests, etc. This essay presents the distribution and representation of economically harmful, invasive and quarantine weed species (Abutilon theophrasti, Agropyrumrepens, Amaranthusretroflexus, Calystegiasepium, Cirsiumarvense, Chenopodium album, Chenopodiumhybridum, Convolvulus arvensis, Cynodondactylon, Daturastramonium, Sonchusarvensis, Sorghum halepense, Xanthium strumarium…) at ten sites in the Nisava district. The assessment of species representation was done in two shootings (May and August) according to scale 1-4. The proper selection of herbicides depends, in a large extent, on the presence of dominant weed species and on the time of application.

scholarly journals Effect of tillage method and weeding regime on soil weed seed bank status and yield performance of wheat

2016 ◽  
Vol 27 (1) ◽  
pp. 9-19
Author(s):  
MJ Khatun ◽  
M Begum ◽  
MM Hossain
Keyword(s):  
Grain Yield ◽  
Seed Bank ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Conventional Tillage ◽  
Weed Seed ◽  
Weed Species ◽  
Sonchus Arvensis ◽  
Tillage Method ◽  
Tillage Methods

An experiment was conducted at the Agronomy Field Laboratory and net house of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh from November 2012 to March 2014. Wheat (cv. BARI Gom-26) was sown with two tillage methods viz., (i) conventional tillage and (ii) stale seedbed technique and nine weeding regimes viz., (i) Unweeded (Control), (ii) Weed free, (iii) Hand weeding (HW) at 15 Days after sowing (DAS), (iv) HW at 15 and 45 DAS, (v)   HW at 25 and 45 DAS (vi) HW at 25 DAS (vii) HW at 25 and 60 DAS (viii) 2,4-D amine at 15 DAS and (ix) 2,4-D amine at 15 DAS + HW at 60 DAS. The design was split-plot with three replications where tillage method was assigned to the main plots and weeding regime to the sub plots. Conventionally tilled plots were infested with 12 weed species of which the five most dominant weed species in descent order were Polygonum coccineum L, Chenopodium album L, Cynodon dactylon L., Sonchus arvensis L. and Cyperus rotundus L. In stale seedbed out of 15 weed species Digitaria sanguinalis L. and Hedyotis corymbosa (L.) Lamk. was dominant instead of Chenopodium album L. and Sonchus arvensis L. identified in conventional tillage. In soil weed seed bank study, 28 species were identified in conventional tillage and 30 in stale seedbed. Among them annuals were dominant over perennials and broadleaves over grasses and sedges. In conventional tillage, the five most dominant weed species in descent order were Chenopodium album L., Hedyotis corymbosa L., Sonchus arvensis L., Polygonum coccineum L. and Rotala ramosior L. while in stale seedbed, five dominant weeds were Polygonum coccineum L., Chenopodium album L., Cynodon dactylon L., Lindernia procumbens Krock. and L. hyssopifolia L. Except the number of spikelets spike-1, rest of all other yield attributes and yield of wheat were affected significantly by the tillage methods. Stale seedbed technique yielded the higher grain (3.54 t ha-1) and the conventional tillage yielded the lower (3.13 t ha-1). The effect of weeding regime was significant on wheat except plant height and 1000-grain weight. The highest grain yield (3.85 t ha-1) was recorded from weed free treatment followed by 2,4-D amine at 15 DAS and lowest (3.22 t ha-1) from control. Interaction between the treatments was also. The highest grain yield (4.09 t ha-1) was recorded from the stale seedbed technique kept weed free followed by 2,4-D amine at 15 DAS and lowest grain yield (3.04 t ha-1) recorded from the conventional tillage retained unweeded.Progressive Agriculture 27 (1): 9-19, 2016

The herbicide effect for controlling the weeds in wheat field

2018 ◽  
Vol 23 (01) ◽  
pp. 26-29
Author(s):  
Azzaya T ◽  
Otgonsuren M
Keyword(s):  
Chenopodium Album ◽  
Amaranthus Retroflexus ◽  
Convolvulus Arvensis ◽  
Wheat Field ◽  
Polygonum Convolvulus ◽  
Vicia Cracca ◽  
Agropyron Repens

Of all reported distributions of weeds of 19 species belonging to 15 genera of 10 families in the wheat planted fields Tsagaannuur soum of Selenge aimag, annuals account for 57.9%, biennials for 10.5% and perennials for 31.5%. The use of herbicide Trimexa, Cliomex 300, Cliodmex plus and Trimexa + Cliodimex plus express for controlling both grassy and dicotyledonous weeds has Agropyron repens L, Panicium miliaceum L, Eragrostis minor Host, Amaranthus retroflexus L, Artemisia sieversiana Willd, Cannabis ruderalis Janisch, Chenopodium album L, Chenopodium aristatum L, Chenopodium acuminatum Willd, Convolvulus arvensis L, Convolvulus gortschakovii Schrenk, Erodium stephanianum Willd, Polygonum  convolvulus L, Geranium  siviricum L, Salsola collina (Pall), Salsola australis R.Br, Noneo pulla L, Malva mohileviensis Downer, Vicia cracca L. 84.4-90.9% technical effectiveness.

Effects of linuron and dimethenamid on antioxidant systems in weeds associated with soybean

2008 ◽  
Vol 3 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Djordje Malenčić ◽  
Jegor Miladinović ◽  
Milan Popović
Keyword(s):  
Reduced Glutathione ◽  
Chenopodium Album ◽  
Ambrosia Artemisiifolia ◽  
Antioxidant Systems ◽  
Oh Radicals ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Total Polyphenols ◽  
Protective Mechanisms ◽  
Total Superoxide Dismutase

AbstractChanges in antioxidant systems in soybean and associated weeds (Ambrosia artemisiifolia L., Chenopodium album L., Convolvulus arvensis L and Sinapis arvensis L.) were studied in relation to treatment with herbicides linuron and dimethenamid in the field experiment. Differences in the total superoxide dismutase (SOD) and catalase (Cat) activities were observed in plants after application of herbicide formulation. Quantities of superoxide (O2.-) and hydroxyl (·OH) radicals and malonyldialdehyde (MDA), reduced glutathione (GSH) and total polyphenols content were also determined. In addition to this, potential antioxidant activity of the plant ethanolic extracts were assessed based on the scavenging activity of stable DPPH free radicals. Results obtained suggest that plants investigated 1) expressed different antioxidant systems in response to herbicide treatment; 2) enzymatic and non-enzymatic protective mechanisms were complementary; 3) some weed species showed distinctive and combined activity of several biochemical parameters, such as Ambrosia artemisiifolia.

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