scholarly journals STUDI ALELOPATI Wedelia trilobata, Ageratum conyzoides, Chromolaena odorata DAN Mikania micrantha TERHADAP PERTUMBUHAN DAN HASIL SAWI

2017 ◽  
Author(s):  
Donly Avrin Togatorop ◽  
Nanik Setyowati ◽  
Uswatun Nurjanah
Keyword(s):  
Dry Weight ◽  
Growth And Yield ◽  
Chromolaena Odorata ◽  
Weed Species ◽  
Ageratum Conyzoides ◽  
Allelopathic Potential ◽  
Mikania Micrantha ◽  
Wedelia Trilobata ◽  
Mustard Seedling ◽  
Allelopathic Effects

Status: PostprintVarious results of researches report that daisy Creeping Daisy (Wedelia trilobata), Goat weed (Ageratum conyzoides), Siam weed (Chromolaena odorata) and Bittervine (Mikania micrantha) have alellopathic potency to innhibit germination, growth and plant yield.. There were few researches on allelopathic potential of Creeping Daisy, Goat weed, Siam weed and Bittervine on mustard. Therefore, an experiment to evaluate the the allelopathic effects of those weeds on growth and yield of mustard at different concentrations is necessary to be conducted. The purpose of the research was to determine the allelopathic effects of Creeping Daisy, Goat weed, Siam weed and Bittervine on the germination of mustard. The Experiment was conducted from November 2008 until January 2009 at Agronomy Laboratory, University of Bengkulu using Randomized Complete Design (RCD). The experiment consisted of four weed species namely Creeping Daisy, Goat weed, Siam weed and Bittervine and five allelopathic concentrations 10, 20,30, 40 and 50 g/L. The results showed that Siam weed suppressed mustard germination more than other weeds. Allelopathic of Siam weed suppressed shoot length and root length of mustard seedling as much as 42.63% and 45.15% respectively. Shoot and root fresh weight and shoot dry weight of mustard seedling were suppressed as much as 28,23%,56,16% and 56,7% respectively The concentration of 50 g/L extracts from Goat weed andSiam weed was the most toxic to the germination of mustard.

scholarly journals ALLELOPATHY STUDY OF Wedelia trilobata, Ageratum Conyzoides, Chromolaena odorata AND Mikania micrantha ON THE GROWTH AND YIELD OF MUSTARD

2017 ◽  
Author(s):  
Donly Avrin Togatorop ◽  
Nanik Setyowati ◽  
Uswatun Nurjanah
Keyword(s):  
Dry Weight ◽  
Growth And Yield ◽  
Chromolaena Odorata ◽  
Weed Species ◽  
Ageratum Conyzoides ◽  
Allelopathic Potential ◽  
Mikania Micrantha ◽  
Wedelia Trilobata ◽  
Mustard Seedling ◽  
Allelopathic Effects

Status: PostprintVarious results of researches report that daisy Creeping Daisy (Wedelia trilobata), Goat weed (Ageratum conyzoides), Siam weed (Chromolaena odorata) and Bittervine (Mikania micrantha) have alellopathic potency to innhibit germination, growth and plant yield.. There were few researches on allelopathic potential of Creeping Daisy, Goat weed, Siam weed and Bittervine on mustard. Therefore, an experiment to evaluate the the allelopathic effects of those weeds on growth and yield of mustard at different concentrations is necessary to be conducted. The purpose of the research was to determine the allelopathic effects of Creeping Daisy, Goat weed, Siam weed and Bittervine on the germination of mustard. The Experiment was conducted from November 2008 until January 2009 at Agronomy Laboratory, University of Bengkulu using Randomized Complete Design (RCD). The experiment consisted of four weed species namely Creeping Daisy, Goat weed, Siam weed and Bittervine and five allelopathic concentrations 10, 20, 30, 40 and 50 g/L. The results showed that Siam weed suppressed mustard germination more than other weeds. Allelopathic of Siam weed suppressed shoot length and root length of mustard seedling as much as 42.63% and 45.15% respectively. Shoot and root fresh weight and shoot dry weight of mustard seedling were suppressed as much as 28,23%, 56,16% and 56,7% respectively The concentration of 50 g/L extracts from Goat weed and Siam weed was the most toxic to the germination of mustard.

scholarly journals ALLELOPATHIC POTENTIAL OF WEED SPEICES AGERATUM CONYZOIDES L. AND CLEOME VISCOSA L. ON GERMINATION AND GROWTH OF SESAMUM INDICUM L

2015 ◽  
Vol 2 (2) ◽  
pp. 114-117
Author(s):  
Anbarasan R ◽  
Prabhakaran J
Keyword(s):  
Growth Parameters ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Sesamum Indicum ◽  
Weed Species ◽  
Ageratum Conyzoides ◽  
Allelopathic Potential ◽  
Germination And Growth ◽  
Cleome Viscosa

Various concentrations (5%, 10%, 15% and 20%) of aqueous extracts prepared from two weed species namely Ageratum conyzoides L. and Cleome viscosa L. and used for the present experiments to determine their allelopathic potential on growth and developmental changes on sesame (Sesamum indicum L.). The weed extracts showed an inhibitory effect on germination percentage, root and shoot growth, and fresh and dry weight of sesame seedlings. The extracts of A.conyzoides had more inhibitory effect at 20%concentration,than that of C.viscosa on growth parameters of sesame.

scholarly journals Growth and Yield of Chili Pepper under Different Time Application of Wedelia (Wedelia trilobata) and Siam Weed (Chromolaena odorata) Organic Fertilizers

2017 ◽  
Author(s):  
Nanik Setyowati ◽  
Zainal Muktamar ◽  
Silma Oktiasa ◽  
Dwi W. Ganefianti
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Plant Height ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Chili Pepper ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Chromolaena Odorata ◽  
Wedelia Trilobata

Low content of soil organic matter and low availability of nutrients in Ultisol are major constraints of this soil to support growth and development of chili pepper. Application of organic fertilizer is required to increase content of soil organic matter as well as to improve other chemical, biological, physical properties of this soil. Wedelia (Wedelia trilobata) and Siam Weed (Chromolaena odorata) are potential sources of organic fertilizer. The aim of this study was to compare growth and yield of chili pepper under different time application of Wedelia and Siam Weed based organic fertilizers. Greenhouse house experiment was conducted employing Completely Randomized Design with 2 factors namely Wedelia and Siam Weed composts as first factor and 5 (five) different time of application as second factor. Each treatment was replicated 5 times. The study showed that most variables observed in this experiment were not affected by types of compost. Only were plant height, canopy width and dry weight of biomass significant difference between the two composts. Siam weed compost applied two weeks before planting resulted in plant canopy wider than Wedelia compost. However, Wedelia compost applied at planting resulted in longer chili pepper as compared to Siam weed compost. The experiment also revealed that Wedelia compost produced higher plant height and root dry weight as compared to Siam weed compost.

scholarly journals Pemanfaatan Alelopati Beberapa Jenis Gulma Sebagai Herbisida Nabati dan Dampaknya Terhadap Pertumbuhan dan Hasil Bawang Merah (Allium Ascalonicum L.)

2008 ◽  
Vol 6 (1) ◽  
pp. 1 ◽  
Author(s):  
Ikhsan Hasibuan ◽  
Prihanani Prihanani ◽  
Danner Sagala
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Imperata Cylindrica ◽  
Cyperus Rotundus ◽  
Growth And Yield ◽  
Ageratum Conyzoides ◽  
Mikania Micrantha ◽  
Extract Concentration ◽  
Randomized Block Design ◽  
The University

The investigation was done to use the allelopathical potency of tested weeds as botanical herbicide, to find the best concentration of weed extract, to find the effect of allelopathy to either weed of onion or the onion. The experiment was carried out in experimental land of Agriculture Faculty, The University of Hazairin, North Bengkulu and Laboratory of Agronomy for four months.The experiment was arranged factorially in a randomized block design with three replications. The kinds of extract weeds were Imperata cylindrica, Cyperus rotundus, Mikania micrantha and Ageratum conyzoides. Concentration was applied at 0%, 10%, 20%, 30%, and 40%.The result concluded that extract, concentration or interaction of the two not only affected insignificant to growth and yield of onion but also dry weight of weed. However, extract of Cyperus rotundus tent to suppress the weed around the onion. Concentration of extract showed inconsistent response to all parameters. It probably because the concentration was still low so that the effect of maintenance was dominant.

scholarly journals ALLELOPATHIC EFFECTS OF ROSE WOOD, GUAVA, EUCALYPTUS, SACRED FIG AND JAMAN LEAF LITTER ON GROWTH AND YIELD OF WHEAT ( Triticum aestivum L.) IN A WHEAT-BASED AGROFORESTRY SYSTEM

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
J. IQBAL ◽  
H.A. RAUF ◽  
A.N. SHAH ◽  
B. SHAHZAD ◽  
M.A Bukhari
Keyword(s):  
Grain Yield ◽  
Leaf Litter ◽  
Eucalyptus Camaldulensis ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Agroforestry System ◽  
Agroforestry Systems ◽  
Growth And Yield ◽  
Syzygium Cumini ◽  
Allelopathic Effects

ABSTRACT Selection of tree species under agroforestry systems is crucial to sustain the productivity of a crop. In present study, allelopathic effects of the leaf litters of 5 trees named Rose wood (Dalbergia sissoo), Guava (Pisidium guajava), Eucalyptus (Eucalyptus camaldulensis), Sacred fig (Ficus religiosa) and Jaman (Syzygium cumini) species on wheat growth and yield was examined. Leaf litter of each tress species was mixed in soil with two doses @ 100 and 200 g of leaves of each species per pot. Higher shoot length, shoot dry weight, number of spikelets per spike and biological yield were recorded in 200 g sun dried Jaman (Syzygium cumini) leaves. Total number of tillers per plant and number of ears per plant were higher under the application of Eucalyptus camaldulensis leaves (200 g sun dried) as compared to other treatments. Spike length, grain yield per pot, number of grains per pot and harvest index were maximum in 200 g sun-dried Sacred fig (Ficu sreligiosa) leaves. Majority of the parameters were promoted at lower doses of leaves per pot, however, at higher doses they started inhibiting the growth and grain yield of wheat.

Allelopathic Influence of Germinating Seeds and Seedlings of Cover Crops on Weed Species

Weed Science ◽  
1996 ◽  
Vol 44 (3) ◽  
pp. 579-584 ◽  
Author(s):  
Melinda L. Hoffman ◽  
Leslie A. Weston ◽  
John C. Snyder ◽  
Emilie E. Regnier
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Resource Competition ◽  
Petri Dish ◽  
Dry Weight ◽  
Weed Species ◽  
Allelopathic Potential ◽  
Below Ground ◽  
Allelopathic Interference ◽  
Radicle Length

Bioassays using binary mixtures that included a cover crop with known allelopathic potential and a weed species were employed to determine the importance of allelopathy compared to resource competition as interference mechanisms. Responses of weed species germinated with cover crops in a petri dish were measured. Interference between weed and cover crop seedlings was determined in a greenhouse experiment using the additive design, which included partitions to reduce above- and below-ground competition and used capillary mat subirrigation to control moisture and fertilizer availability. Germinating sorghum reduced radicle length of weeds, whereas germinating rye tended to increase weed radicle length. Methods limited above-ground competition, so likely interference mechanisms were below-ground competition and allelopathy. Germination with a cover crop had little effect on germination and shoot length of weeds. Increased density of rye but not of sorghum reduced growth of barnyardgrass seedlings. Reduced number of barnyardgrass leaves in the presence of rye was likely due to allelopathy. Suppression of barnyardgrass dry weight attributed to allelopathic interference by rye was successfully separated and compared to the combined effects of competition and allelopathy.

scholarly journals Comparison of the Allelopathic Potential of Leguminous Summer Cover Crops: Cowpea, Sunn Hemp, and Velvetbean

HortScience ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 289-293 ◽  
Author(s):  
Michael J. Adler ◽  
Carlene A. Chase
Keyword(s):  
Plant Height ◽  
Cover Crops ◽  
Cover Crop ◽  
Dry Weight ◽  
Bell Pepper ◽  
Weed Species ◽  
Crop Species ◽  
Allelopathic Potential ◽  
Sunn Hemp ◽  
Germination And Growth

The phytotoxicity of aqueous foliar extracts and ground dried residues of sunn hemp (Crotalaria juncea L.), cowpea [Vigna unguiculata (L.) Walp. cv. Iron Clay], and velvetbean [Mucuna deeringiana (Bort) Merr.] to crop and weed germination and growth was evaluated to compare the allelopathic potential of the cover crops. By 14 days after treatment (DAT), goosegrass [Eleusine indica (L.) Gaertn.] germination with 5% aqueous extracts of all cover crops (w/v fresh weight basis) was similar and greater than 75% of control. However, with the 10% extracts, goosegrass germination was lowest with cowpea extract, intermediate with velvetbean extract, and highest with sunn hemp extract. Livid amaranth (Amaranthus lividus L.) germination declined to ≈50% with cowpea and sunn hemp extracts and even lower to 22% with velvetbean extract. The suppression of livid amaranth germination was greater with the 10% extracts than the 5% extracts. Bell pepper (Capsicum annuum L.) germination was unaffected by velvetbean extract, inhibited more by the 5% cowpea extract than the 10% extract, and was also sensitive to the 10% sunn hemp extract. All cover crop extracts resulted in an initial delay in tomato (Lycopersicon esculentum Mill.) germination, but by 14 DAT, inhibition of germination was apparent only with cowpea extract. The phytotoxicity of ground dried residues of the three cover crops on germination, plant height, and dry weight of goosegrass, smooth amaranth (A. hybridus L.), bell pepper, and tomato was evaluated in greenhouse studies. Goosegrass germination was inhibited in a similar manner by residues of the three cover crops to 80% or less of control. Smooth amaranth germination, plant height, and dry biomass were more sensitive to sunn hemp residues than to cowpea and velvetbean residues. Bell pepper germination, plant height, and dry weight were greater than 90% of control except for dry weight with cowpea residue, which was only 78% of control. The greatest effect of cover crop residue on tomato occurred with dry weight, because dry weights with cowpea and sunn hemp were only 76% and 69% of control, respectively, and lower than with velvetbean. There was more evidence of cover crop phytotoxicity with the weed species than with the crop species and cowpea extracts and residue affected all species more consistently than those of sunn hemp and velvetbean.

scholarly journals The Potensial of Fusarium sp. and Chaetomium sp. as Biological Control Agents of Five Broad-Leaf Weeds

2020 ◽  
Vol 35 (2) ◽  
pp. 299
Author(s):  
Loekas Soesanto ◽  
Endang Mugiastuti ◽  
Abdul Manan
Keyword(s):  
Biological Control ◽  
Disease Incidence ◽  
Pathogenic Fungi ◽  
Dry Weight ◽  
Biological Control Agents ◽  
Ageratum Conyzoides ◽  
Wedelia Trilobata ◽  
Broad Leaf ◽  
The Media ◽  
Fusarium Sp

Weeds are a major problem in crop cultivation, either in food crops, horticulture, plantations or forests and cause a decrease in the quality and quantity of production. Weed biocontrol, especially by using plant pathogenic fungi, has received attention but is still lacking in application. The purpose of this study was to determine the potential of <em>Fusarium</em> sp. and <em>Chaetomium</em> sp. as biological control agents against five broad-leaf weeds (<em>Asystasia gangetica</em> L., <em>Ageratum conyzoides</em> L., <em>Synendrella nodiflora</em> (L.) Gaertn., <em>Wedelia trilobata</em> (L.) U.S. Hitchc. and <em>Amaranthus spinosus</em> L.). The variables observed were the incubation period, disease incidence, disease intensity, as well as weed fresh and dry weight. The results of this study showed that the two pathogenic fungi, <em>Fusarium</em> sp. and <em>Chaetomium</em> sp., can cause a more intensive disease in <em>A. conizoides</em> than <em>A. spinosus</em>. <em>A. gangetica</em>, <em>S. nodiflora</em> and <em>W. trilobata</em>; however, the fungi have not been able to inhibit the growth and kill the weeds. Therefore, improvement need to be done by modifying the media to increase the ability of fungi to control weeds.

scholarly journals A study on the ecology and economic impact of major invasive weed species of coconut homesteads of Nattika, India

2014 ◽  
Vol 1 (1) ◽  
pp. 32-35
Author(s):  
ES Abhilash ◽  
Sheeja P Parayil ◽  
Brijesh Sathian ◽  
AR Raju ◽  
NA Bilal ◽  
...  
Keyword(s):  
Invasive Species ◽  
Weed Management ◽  
Management Strategy ◽  
Alien Invasive Species ◽  
Chromolaena Odorata ◽  
Weed Species ◽  
Invasive Weed ◽  
Mikania Micrantha ◽  
Medium Risk ◽  
Genetic Aberration

Out of the 4 alien invasive species three are of high risk namely Mikania micrantha, Chromolaena odorata and Mimosa diplotricha. Lantana camara is found to be medium risk. The farmers spent a considerable amount of money nearly Rs 4800 per year for one acre land pertaining to mechanical weeding of invasive species. The herbicide is widely used by farmers to control the weeds are capable to cause various health problems including genetic aberration. So an effective and comprehensive weed management strategy have to be developed in the country to combat the threats of IAS in agriculture fields. DOI: http://dx.doi.org/10.3126/apjeesd.v1i1.9509Asia Pacific Journal of Environment Ecology and Sustainable Development 2013; 1: 32-35

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