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

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.

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

2021 ◽  
Vol 6 (4) ◽  
pp. 436-440
Author(s):  
Md. Shahriar Kobir ◽  
Suchana Paul ◽  
Pradip Hajong ◽  
Md. Harun-Or-Rashid ◽  
Md. Hafijur Rahman
Keyword(s):  
Management Practices ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Taxonomic Diversity ◽  
Economic Benefits ◽  
Herbarium Specimens ◽  
Weed Species ◽  
Pulse Crop ◽  
Related Information ◽  
Weed Infestation

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.

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

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.

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

Response of Dwarf Wheat (Triticum aestivum) and Four Weed Species to Herbicides

Weed Science ◽  
1981 ◽  
Vol 29 (5) ◽  
pp. 521-524 ◽  
Author(s):  
O. P. Kataria ◽  
Vijay Kumar
Keyword(s):  
Triticum Aestivum ◽  
Dry Matter ◽  
Chenopodium Album ◽  
Wheat Crop ◽  
Weed Species ◽  
Convolvulus Arvensis ◽  
Matter Production ◽  
Dwarf Wheat ◽  
Hand Weeding ◽  
High Degree

Control of littleseed canarygrass (Phalaris minor Retz.), wild oat (Avena fatua L.), common lambsquarters (Chenopodium album L.), and field bindweed (Convolvulus arvensis L.) in dwarf wheat (Triticum aestivum L.) fields was studied with five herbicides and hand weeding. Terbutryn [2-(tert-butylamino)-4-(ethylamino)-6-(methylthio)-s-triazine] and 1-benzthiazol-2-yl-1,3-dimethylurea controlled the weeds more effectively than did two hand weedings. Diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea], nitrofen (2,4-dichlorophenyl p-nitrophenyl ether), and dichlormate (3,4-dichlorobenzyl methylcarbamate), proved only partially effective against weeds, and were therefore significantly inferior to two hand weedings. Spikes per meter of row length and test weight of wheat were increased significantly by 1-benzthiazol-2-yl-1,3-dimethylurea (1.5 to 2 kg/ha), terbutryn (0.5 kg/ha), and two hand weedings over the yields of the weedy check. The 1-benzthiazol-2-yl-1,3-dimethylurea showed a high degree of selectivity in the wheat crop at 2 kg/ha and increased yields to those of weed-free plots. Terbutryn was almost as effective as 1-benzthiazol-2-yl-1,3-dimethylurea, which increased the wheat yields over those of the weedy check by 19.8 and 42.4% during the 1974/75 and 1975/76 seasons, respectively. Tolerance of dwarf wheat to terbutryn at 0.75 kg/ha was variable, resulting in significant decreases in yield components and grain yield. Dry-matter yield of wheat was negatively correlated with the dry matter production of weeds.

DISTRIBUTION PATTERN OF WEEDS IN WHEAT CROP GROWN IN DISTRICT KHANEWAL, PUNJAB, PAKISTAN

2020 ◽  
Vol 27 (2) ◽  
pp. 47-59 ◽  
Author(s):  
Muhammad Usman ◽  
Ghulam Murtaza ◽  
Allah Ditta ◽  
Tamana Bakht ◽  
Muhammad Asif ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Growth And Yield ◽  
Survey Study ◽  
Cereal Crops ◽  
Wheat Crop ◽  
Weed Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Factors Affecting ◽  
Weed Infestation

Weed infestation is among the main biotic factors affecting growth and yield of various crops. This issue is more drastic for cereal crops like wheat which is the staple food crop of over 2.5 billion population of the world. One the control strategy is the investigated the distribution pattern of weeds under field conditions. In this regard, a survey study was conducted to investigate the distribution pattern of weed species in wheat crop during 2016-18 in district Khanewal, Punjab Pakistan. Thirty-six weed species distributed among fifteen different families collected from the study area. Family Poaceae was dominant with 10 species while family Asteraceae was the second most dominant family with four weed species. Cynadon dactylon was the most frequently found specie with frequency value 79.1% while Paspalum distichum had the highest importance value index (6.96) among the weeds of the study area.

scholarly journals Weed infestation of winter wheat (Triticum aestivum L.) under the conditions of application of some retardants

2013 ◽  
Vol 66 (2) ◽  
pp. 137-148
Author(s):  
Elżbieta Harasim ◽  
Marian Wesołowski
Keyword(s):  
Winter Wheat ◽  
Chenopodium Album ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Control Treatment ◽  
Wheat Crop ◽  
Chlormequat Chloride ◽  
Weed Infestation ◽  
Winter Wheat Crop ◽  
Density And Biomass

<p>A field study was conducted in the period 2004–2007 on grey-brown podzolic soil (sandy). This study analysed the relationship between the use of stem shortening in cereals by means of retardants with the following active substances: chlormequat chloride (Antywylegacz Płynny 675 SL), trinexapac-ethyl (Moddus 250 EC), chlormequat chloride + ethephon (Cecefon 465 SL), and weed infestation. The retardants were applied at the 1st node stage (BBCH 31 – Antywylegacz Płynny 675 SL) and the 2nd node stage of winter wheat (BBCH 32 – Moddus 250 EC and Cecefon 465 SL), together with the adjuvant Atpolan 80 EC (75% of SN 200 mineral oil) or without the adjuvant. Winter wheat, cv. 'Muza', was grown after vetch grown for seed. The whole experiment was sprayed with the herbicides Apyros 75 WG and Starane 250 EC at the full tillering stage (BBCH 29–30). Plots where no growth regulators were used were the control treatment.</p><p>Weed density and biomass showed great variation between years. In the winter wheat crop, <em>Veronica persica, Viola arvensis, Veronica arvensis, Capsella bursa-pastoris</em>,and<em> Chenopodium album </em>dominated in the dicotyledonous class, whereas <em>Apera spica-venti</em>, <em>Echinochloa crus-galli</em>,and<em> Elymus repens </em>were predominant among monocotyledonous plants<em>. </em>The level of weed infestation of the winter wheat crop, as measured by the number and air-dry weight of weeds, was significantly differentiated by years and retardants used as well as by interactions of these factors. The adjuvant Atpolan 80 EC did not have a significant effect on the above-mentioned weed infestation parameters.</p>.

scholarly journals Response of Occurrence of Winter Weeds to Physico-Chemical Characteristics of Soil of Gandhinagar District, Gujarat, India

2021 ◽  
pp. 343-347
Author(s):  
Dr. Binnyben H. Karlikar ◽  
Prof. Hitesh A. Solanki
Keyword(s):  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Soil Samples ◽  
Cyperus Rotundus ◽  
Capital City ◽  
Gujarat State ◽  
Cassia Tora ◽  
Physico Chemical ◽  
Trianthema Portulacastrum ◽  
Boerhavia Diffusa

Gandhinagar is the capital city of Gujarat State. The paper deals with the estimation of nutrients (pH, EC, N, P, K, Zn) in soil of different talukas of Gandhinagar district. This district has four talukas with 290 villages and 10 urban habitations in the district. For the study purpose, the entire district was divided into 20 sites. Five sites of each talukas were selected. Total 20 sampling sites were selected to collect samples. The study was carried for a period of 2 year (2011 to 2013). Soil samples were colleted and analysed for their parameters like pH, EC, Nitrate, Phosphorus, Potassium and Zinc (Zn) at monthly. Zn was recorded critical in Mansa and Dehgam taluka and quite low in Kalol taluka. The occurrence types and distribution of Amaranthus viridis L., Achyranthus aspera L., Trianthema portulacastrum L, Boerhavia diffusa L., Cyperus rotundus L., Cynodon dactylon (L.) Pers., Tridex procumbens L., Parthenium hysterophorus L., Euphorbia hirta L., Vernonia cinera (L.) Less., Digera muriata (L.) Mart., Cassia tora L., Chenopodium album L., Portulaca oleracea L. in the study area of Gandhinagar showed relations with the soil in which they occur.

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

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.

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

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 (<em>Beta</em><em> vulgaris </em>L. subsp. <em>vulgaris</em>) 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. <em>Chenopodium album </em>L.<em>, Polygonum persicaria </em>L. and <em>Setaria pumila </em>(POIR.) ROEM. &amp; 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.

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

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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