Taxonomic diversity of weed flora in pulse crops growing field at south-western part of Bangladesh

Pulses are important field crops in Bangladesh and weed infestation in pulses field is a great concern now a days. So, a rigorous field survey was conducted throughout the pulses growing season at pulses grower farmers’ field of south-western part of Bangladesh to know the present status of weed infestation in pulses field. During the survey, fresh samples were collected along with other related information e.g., habitat, location, collection date, flowering time, crop/plant association. Fresh samples were dried well for making herbarium specimens. A sum of 13 weed species under 12 genera and 08 families were collected and documented their uses in various ailments. Among the families, Amaranthaceae is the highest-represented family with 03 species. Among the genera, the largest genera Amaranthus represented by 2 species. Cyperous rotundus, Cynodon dactylon, Chenopodium album, Amaranthus spinosus, Croton bonplandianum, Coccinia grandis are the common and major weed species in pulse crop growing field in south-western part of Bangladesh. The knowledge generated from the present research would be helpful for the management practices of pulse crop associated weeds as well as for getting high economic benefits from beneficial species.

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Evaluation of Different Weed Management Practices on Growth Variables and Yield of Wheat Varieties

Asian Plant Research Journal ◽

10.9734/aprj/2020/v5i430112 ◽

2020 ◽

pp. 7-30

Author(s):

Md. Golam Mostafa ◽

Syed Arvin Hassan ◽

Md. Ehsanul Haq ◽

Md. Ahasan Habib ◽

Kaniz Fatema ◽

...

Keyword(s):

Grain Yield ◽

Weed Management ◽

Management Practices ◽

Cynodon Dactylon ◽

Chenopodium Album ◽

Cyperus Rotundus ◽

Alternanthera Philoxeroides ◽

Weed Species ◽

Wheat Varieties ◽

Hand Weeding

A field experiment was conducted in medium fertile soil at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2017 to April 2018 in Rabi season with a view to evaluate the performance of wheat varieties under different weed control methods. The experiment was carried out with three varieties i.e. BARI Gom-28, BARI Gom-29 and BARI Gom-30 in the main plot and five weed management methods viz. control (no weeding), two hand weeding at 20 and 40 DAS, Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS pre-emergence, Afinity 50.75WP (Isoproturon) 1500 g ha-1 at 25 DAS as post-emergence herbicide and Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS + Afinity 50.75WP (Isoproturon)1500 g ha-1 at 25 DAS in the sub plot in split plot design. Nine different major weed species were found in the field such as Cynodon dactylon, Cyperus rotundus, Echinochloa colonum, Eleusine indica, Chenopodium album, Alternanthera philoxeroides, Brassica kaber, Leliotropium indicum, Vicia sativa. Results reveled that BARI Gom-30 contributed the highest grain yield 3.01 tha-1. Pre-emergence application of Panida 33EC controlled weeds significantly which showed highest growth followed by yield achieved in wheat. BARI Gom-30 in combination with Panida 33EC produced the highest grain yield 3.52 tha-1 while the lowest grain yield 2.09 t ha-1 was obtained from BARI Gom-28 with no weeding treatment. Results reveled that Panida 33EC (pre-emergence) was found more effective to controlling weeds in wheat. Results of the study finally reveled that Panida 33EC might be considered as a feasible option for combating weed and ensuring higher yield in wheat cultivation.

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STUDY OF WEED INFESTATION IN WHEAT FIELDS AT SOUTH PUNJAB REGION PAKISTAN

Earth Sciences Pakistan ◽

10.26480/esp.02.2020.70.77 ◽

2020 ◽

Vol 4 (2) ◽

pp. 70-77

Author(s):

Zahida Parveen ◽

Shamim Umar ◽

Muhammad Ajmal ◽

Bilal Haider ◽

Amna Zafar Iqbal ◽

...

Keyword(s):

Native Plants ◽

Cynodon Dactylon ◽

Chenopodium Album ◽

Research Work ◽

Soil Samples ◽

Wheat Crop ◽

Weed Species ◽

Natural Systems ◽

Weed Infestation ◽

Ecological Parameters

Weeds are one of the major threats to the natural environment. They are destroying native habitats, threatening native plants and animals, and choking our natural systems including rivers and forests. Aiming to explore the existing situation of weed infestation and assessing its impact, present research work was conducted in south Punjab region, focusing on District Layyah and Muzaffargarh. Weed flora of wheat crop at 3 sites i.e. Nawan Kot, Fethpur, and Karor Lal-e-son in district Layyah; and three sites (Kot Addu, Chowk Sarwar Shaheed, and Sultan Nagar) in district Muzaffargarh was observed using quadrat method. Ten quadrats measuring 1.0 m2 were randomly selected to record the data. From each quadrat soil samples (from top 3 cm) were also taken. Different ecological parameters (i. e. Frequency (%) density (%), (%), relative density (%), relative frequency (%) and important value (%) were worked out using proper formulae. Weed species related to 9 families were classified into different frequency classes. Two most important families of these sites were found Poaceae and Papilionaceae each one represented by four species. Chenopodium album, Cynodon dactylon and Anagallis arvensis were observed the most frequent species at these sites.

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Weeds of Wheat in Nepal: A Literature Review

Journal of Natural History Museum ◽

10.3126/jnhm.v27i0.14161 ◽

2015 ◽

Vol 27 ◽

pp. 132-178 ◽

Cited By ~ 2

Author(s):

Dharma Raj Dangol

Keyword(s):

Research Council ◽

Cynodon Dactylon ◽

Agricultural Research ◽

Chenopodium Album ◽

Triticum Aestivum L ◽

Herbarium Specimens ◽

Weed Species ◽

Plant Resources ◽

Agricultural Research Council ◽

University Department

This paper reviews publications dealing with weeds and/or their control in wheat (Triticum aestivum L.) in Nepal and enumerates 370 weed species of 210 genera in 54 families. This review shows that the Asteraceae (69 spp.), Poaceae (52 spp.), Leguminosae (25 spp.), Polygonaceae (19 spp.), Caryophyllaceae (18 spp.), Scrophulariaceae (17 spp.), Euphorbiaceae and Lamiaceae (14 spp. each), Brassicaceae and Cyperaceae (13 spp.), and Solanaceae (11 spp. each) were the dominant families, which accounted for 71.35% of the total weeds. This paper also documented 63 species reported as the principal or most common weeds and 4 species (Chenopodium album, Cynodon dactylon, Phalaris minor, Polygonum plebeium) as the most commonly reported weeds of wheat in Nepal in the papers reviewed. This paper also highlighted the fact that the researchers from the Tribhuvan University, Department of Plant Resources (then Department of Medicinal Plants/HMG) and Nepal Agricultural Research Council mentioned about the deposition of their herbarium specimens in the respective organizations. This paper also analyzed the publication media in which the reviewed papers appeared.J. Nat. Hist. Mus. Vol. 27, 2013: 132-178

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

Progressive Agriculture ◽

10.3329/pa.v27i1.27528 ◽

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

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Weed Species Shifts with Increasing Field Age in Alaska

Weed Science ◽

10.1017/s0043174500069496 ◽

1983 ◽

Vol 31 (4) ◽

pp. 520-524 ◽

Cited By ~ 12

Author(s):

Jeffery S. Conn ◽

John A. Delapp

Keyword(s):

Introduced Species ◽

Native Species ◽

Management Practices ◽

Chenopodium Album ◽

Vegetative Cover ◽

Weed Species ◽

Stellaria Media ◽

Multivariate Statistical ◽

Hordeum Jubatum ◽

Polygonum Pensylvanicum

Vegetative cover of weeds was determined in 84 agricultural fields representing a number of crops in Alaska. Multivariate statistical techniques were used with weed, soil, and management data to determine if weed vegetation was related to particular environmental and management variables. Field age was the variable that best explained the variation in vegetation composition. In fields recently cleared, native species were most important, being replaced by introduced weed species with increasing field age. Field horsetail (Equisetum arvense L.) was an exceptional native species that persisted under cultivation. Total weed cover was low in the first few years of cultivation, but increased as introduced species such as common lambsquarters (Chenopodium album L.), common chickweed [Stellaria media (L.) Cyrillo], quackgrass [Agropyron repens (L.) Beauv.], and foxtail barley (Hordeum jubatum L.) became more prevalent. A number of introduced species such as hempnettle (Galeopsis tetrahit L.) and Pennsylvania smartweed (Polygonum pensylvanicum L.) were restricted to just a few fields, emphasizing the importance of using weed-free seed and other management practices to minimize the spread of introduced weeds.

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Hıyarda (Cucumis sativus L.) yabancı ot çıkış zamanın tahminine yönelik araştırmalar

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v3i5.271-278.268 ◽

2015 ◽

Vol 3 (5) ◽

pp. 271

Author(s):

Nihat Tursun ◽

İrfan Ersin Akıncı ◽

Mustafa Şahin ◽

Ahmet Uludağ

Keyword(s):

Cynodon Dactylon ◽

Chenopodium Album ◽

Growth Curves ◽

Cubic Spline ◽

Amaranthus Retroflexus ◽

Cyperus Rotundus ◽

Tribulus Terrestris ◽

Weed Species ◽

Convolvulus Arvensis ◽

Cucumis Sativus L

Modelling is carried out for eleven major weeds in cucumber to develop estimated models for weed emergence time. Weed species were grouped according to their emergence patterns. Amaranthus retroflexus, Chenopodium album, Heliotropium europaeum, Polygonum aviculare and Solanum nigrum were early emerging, Convolvulus arvensis, Cyperus rotundus, Cynodon dactylon, Portulaca oleracea and Sorghum halepense were season long emerging Tribulus terrestris was the late emerging weed species. Different non-linear growth curves (Chapman-Richard, Weibull, logistic, Gompertz and cubic spline) fitted to the data of cumulative percent emergence for the different species and years. Cubic spline seemed the best model for many species.

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Variation in weed infestation of sugar beet (Beta vulgaris L. subsp. vulgaris) depending on the intensity of chemical protection of plantations

Acta Agrobotanica ◽

10.5586/aa.2014.019 ◽

2014 ◽

Vol 67 (2) ◽

pp. 123-128

Author(s):

Krzysztof Domaradzki ◽

Katarzyna Marczewska-Kolasa ◽

Marcin Bortniak

Keyword(s):

Sugar Beet ◽

Chenopodium Album ◽

Weed Species ◽

Chemical Protection ◽

Weed Infestation ◽

Floristic Variation ◽

Polygonum Persicaria ◽

Herbicide Use ◽

Lower Silesia ◽

Made In

A floristic study was conducted over the period 2010–2012, using the Braun-Blanquet method, under which vegetation relevés were made in sugar beet (Beta vulgaris L. subsp. vulgaris) plantations in Lower Silesia. Fields with similar habitat conditions, which differed in the intensity of herbicide application to control weed infestation, were selected for observation. A total of 144 relevés were made and based on them a list was prepared of species found in fields in which different levels of chemical protection were used. A cover index and a constancy class were determined for each species found in the phytocoenoses studied. On the basis of these observations, the study found floristic variation in the investigated agrophytocenoses as af- fected by the level of intensity of weed control chemicals used. In herbicide-untreated plots, a total of 25 weed species were found and their aggregate cover index was 8705. Chenopodium album L., Polygonum persicaria L. and Setaria pumila (POIR.) ROEM. & SCHULT by far dominated among them. Herbicide use caused an impoverishment in the floristic list. 20 taxa were observed in the plots treated with the lowest herbicide rates, while with increasing rates the number of species dropped to 18. The sum of the cover indices also decreased with increasing rates, successively reaching the values of 5907, 5212 and 4356.

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Efficacy of pre and post-emergence herbicides on growth and yield of Wheat (Triticum aestivum L.) under Doon Valley of Uttarakhand

International Journal of Agricultural and Applied Sciences ◽

10.52804/ijaas2020.1220 ◽

2020 ◽

Vol 1 (2) ◽

pp. 109-114

Author(s):

Sanket Prabhakar Pokharkar ◽

◽

Pratap Jambuvant Khose ◽

Prashant Balashaheb Shinde

Keyword(s):

Cynodon Dactylon ◽

Chenopodium Album ◽

Dry Weight ◽

Triticum Aestivum L ◽

Growth And Yield ◽

Cost Ratio ◽

Weed Species ◽

Yield Attributes ◽

Growing Period ◽

Hand Weeding

A field experiment was directed during Rabi season 2018-2019 at experimental farm of Doon (P.G.) College of Agriculture Science and Technology, Selaqui, Dehradun (Uttarakhand) using pre-and post-emergence herbicides combined with Hand Weeding for successfully controlling of weeds, their result on yield and production economics on Wheat (Triticum asetivum L.) variety used ‘Unnat PBW-343’. The dominant weed species present in field were Phalaris minor, Cynodon dactylon (L.) amongst dicot weeds like as Chenopodium album, Coronopus didymus, Fumaria parviflor, Medicago denticulate, Malva praviflora Vicia, Sativa Rumex debtatus, Sisymbrium irio among monocot, were observed during growing period. Lowest weed dry weight was observed in hand weeding at 30 and 60 Days after sowing. Higher Weed control efficiency up to (86.31 %) was recorded by Hand weeding at 30 and 60 Days after sowing. The treatment pendimethalin fb Sulfosulfuron @ 1 + 0.018 kg a.i.ha-1 P.E at 2 DAS and PoE at 30 DAS (T6) recorded greater yield attributes and seed and Stover yield (2540 kg/ha and 2668 kg/ha) and maximum net monetary return (Rs 36250) and Benefit: Cost ratio and 1.86.

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Weed Species Composition of Agrophytocenoses in Altai Krai

Acta Biologica Sibirica ◽

10.3897/abs.7.e60884 ◽

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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Distribution of economically important weed species in the riparian and roadside vegetation of Serbia

Acta herbologica ◽

10.5937/actaherb2101051a ◽

2021 ◽

Vol 30 (1) ◽

pp. 51-63

Author(s):

Ana Anđelković ◽

Goran Tmušić ◽

Dragana Marisavljevićna ◽

Mladen Marković ◽

Dušanka Cvijanović ◽

...

Keyword(s):

Cynodon Dactylon ◽

Chenopodium Album ◽

Arable Land ◽

Road Networks ◽

Riparian Areas ◽

Weed Species ◽

Convolvulus Arvensis ◽

Lactuca Serriola ◽

Negative Effect ◽

Unstable Environment

Transportation corridors such as waterways and road networks serve as an entranceway for invasive and economically important weed species. The unstable environment of riparian areas and nutrient enrichment of road verges promotes the establishment and spread of these species, which may have a negative effect on nearby arable land, leading to severe yield reductions. We aimed to register the presence and frequency of five selected weed species (Chenopodium album, Cirsium arvense, Convolvulus arvensis, Cynodon dactylon, and Lactuca serriola) within these linear corridors. Sites along waterways were visited during 2013-2016, and road networks during 2018-2019. At each site, studied weed species were registered along 100 m transects, resulting in 250 localities along waterways and 180 near road networks. The most frequent species is C. arvensis, followed by L. serriola and C. album, while less prevalent species are C. arvense and C. dactylon. The main characteristic of studied species is their preference for roadside habitats, except for Chenopodium album, which is more common in riparian areas.

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