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 ALLELOPATHIC POTENTIAL OF EXTRACTS AND LEACHATES OF AZADIRACHTA INDICA A. JUSS LEAVES ON GERMINATION AND GROWTH OF ELEUSINE CORACANA (L.) GAERTNER

2015 ◽  
Vol 2 (2) ◽  
pp. 129-132
Author(s):  
Elavazhagan P
Keyword(s):  
Azadirachta Indica ◽  
Shoot Growth ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Eleusine Coracana ◽  
Leaf Extracts ◽  
Allelopathic Potential ◽  
Root And Shoot Growth ◽  
Germination And Growth

Various concentrations (5%, 10%, 15% and 20%) of leaf leachates and leaf extracts prepared from fully senesced fallen and matured leaves of Azadirachta indica A. Juss. and used for the present experiments to determine their allelopathic potential on growth and developmental changes on Eleusine coracana (L.) Gaertner. Leaf leachates and leaf extracts sowed an inhibitory effect on germination percentage, root and shoot growth, and fresh and dry weight of E. coracana seedlings. The leaf extracts had more inhibitory effect at 20%concentration,than that of leaf leachates on morphological parameters of E. coracana

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 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 Physico-Chemical Analysis of Mango Juice Factory Efϑluent (MJFE) and its phytotoxic effects of Gingelly (Sesamum indicum L.)

2020 ◽  
Vol 11 (3) ◽  
pp. 4872-4878
Author(s):  
Sivakumar V P ◽  
Lenin M
Keyword(s):  
Agricultural Land ◽  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
Physicochemical Analysis ◽  
Sesamum Indicum ◽  
Tolerance Index ◽  
Phytotoxic Effects ◽  
Vigour Index ◽  
Mango Juice

The use of bottled fruit beverages has increased enormously. The increased consumption increases the public and sewerage industries. It also leads to various sewerage industries problems. The juice factories use large quantities of water which in turn produces large amounts of wastewater that is called ‘effluent’. This effluent contains a large amount of chemicals and organisms from fruits, sugars and additives like colours. The classical juice factory generates 10 litres of ‘effluent’ per litre of juice. Anextensive range of mangoes are used to make juice; the large quantity of effluent is discharged into nearby water bodies or open agricultural land. The researchers are working on the solution to avoid this. One of the researches we tried to solve the problem of using dilution methods was a physicochemical analysis of mango juice effluent and its phytotoxic effects on gingelly. The laboratory experiment was carried outon the phytotoxic effects of mango juice factory effluent (MJFE)on the growth of Gingelly (Sesamum indicum L.). The different concentrations of effluent(Control, 5, 25, 50, 75and 100%) were prepared, after the seeds sowing the mud pots the treatments were given, the germination percentage(G.P.), vigour index (VI), tolerance index (T.I.), phytotoxicity (P) were recorded in 7thDAS. The growth parameters such as shoot length (S.L.), root length (R.L.), number of leaves (N.L.), total leaf area (TLA), fresh weight (F.W.) and dry weight (D.W.) were inspected on 30th DAS of seedlings.The results were exposed after germination characters, and morphological parameters increased (up to5%) effluent concentration and after that declined in higher (above 25%) concentration of MJFE. Because the effluent is toxic, it contains large quantities of organic and inorganic chemicals and high intensity of BOD, COD and others.

scholarly journals Effect of FYM, N, P Fertilizers and Biofertilizers on Germination and Growth of Paddy (Oryza sativa L.)

2015 ◽  
Vol 35 ◽  
pp. 59-65 ◽  
Author(s):  
S. Rajasekaran ◽  
P. Sundaramoorthy ◽  
K. Sankar Ganesh
Keyword(s):  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
Organic Manure ◽  
Fresh Weight ◽  
Chemical Fertilizers ◽  
Combined Application ◽  
Pigment Contents ◽  
Germination And Growth ◽  
P Fertilizers

Biofertilizers are becoming increasingly popular in many countries and for many crops, but very few studies on their effect on growth in seedling stage have been conducted in rice. The experiments were conducted under laboratory conditions due to organic manure, fertilizers and bio fertilizers were observed in all experiments. The treatments such as organic manure, chemical fertilizers and Biofertilizers alone and in combination were applied. The growth parameters viz. germination percentage, root length, shoot length, fresh weight and dry weight were measured. Similarly the pigment contents such as chlorophyll-a, b, total chlorophyll and carotenoid were also measured at seventh day after sowing. All the parameters were higher in combined application of Biofertilizers than in single application and other treatments including control.

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 Biological activity of Arum Cyreniacum (Araceae) and potential use as Bioherbicide

2021 ◽  
pp. 58-67
Author(s):  
Ahlam K Alaila ◽  
Sami M Salih ◽  
Ahmed A Abdulrraziq
Keyword(s):  
Biological Activity ◽  
Hordeum Vulgare ◽  
Photosynthetic Pigments ◽  
Growth Parameters ◽  
Dry Weight ◽  
Nutrient Content ◽  
Germination Percentage ◽  
Weed Species ◽  
Crop Species ◽  
Negative Effect

The present investigation aims was carried out to study the biological activity of aqueous extract and shoot crude powder of Arum cyreniacum (ACSAE and ACSCP) on some germination and growth parameters (germination bioassay experiment) besides major physiological, and biochemical processes (pot experiment) In Hordeum vulgare (crop species) and Phalaris minor (weed species) of different concentrations of A. cyreniacum on germination percentage (GP), coleoptile (CL) and radicle (RL) lengths, seedling shoot and root length seedling fresh and dry weight, some nutrients (N, K, Na, Cu, Fe, and Ni ), and photosynthetic pigments .Generally, the effect of the all concentrations levels of the extract on (GP), (CL) and (RL) on H. vulgare seeds was ineffectively decreased with increasing the concentrations of A. cyreniacum while the percentage was significantly decreased with increasing the concentrations of the with P. minor. All concentrations levels of the extracts reduced coleoptile (CL) and radicle (RL) lengths of H. vulgare. Likewise, the reduction in the two parameters was documented in P. minor. Were more affected in P. minor compared to H. vulgare. There was a significant within the concentration of micronutrients as well as the entire photosynthetic color substance of P. minor seedlings grown in ACSCP. Treatment with ACSCP had a more negative effect on total nitrogen in P. minor than on H. vulgare. Keywords: R Hordeum Vulgare; Growth Parameters; Nutrient Content; Photosynthetic Pigments

scholarly journals ALLELOPATHIC POTENTIAL OF CYPERUS ROTUNDUS L. AND CYNODAN DACTYLON L. ON GERMINATION AND GROWTH RESPONSES OF SOME RICE CULTIVARS

2015 ◽  
Vol 2 (2) ◽  
pp. 118-122
Author(s):  
Kavitha D
Keyword(s):  
Seed Germination ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Cyperus Rotundus ◽  
Rice Cultivars ◽  
Growth Responses ◽  
Allelopathic Potential ◽  
Chlorophyll Contents

Weeds are enemies to the crop plants and have harmful effects on agricultural crops due to several factors such as competition for space, light and nutrients and allelopathy. In the present study,various concentrations (0,5,10,15,20 and 25%) of whole plant aqueous extractsof weeds, Cyperus rotundusL.( Purple nut sedge) and Cynodan dactylon(L.) Pers. (Bermuda grass) were tested for assessing their allelopathic potential on seed germination and seedling growth of some rice (Oryza sativa L.) cultivars i.e.ADT-36,BPT5204 and IR-20 using pot culture experiments. The experimental results revealed that all the concentrations of both the weed extracts had inhibition on germination percentage, seedling length, number of,dry weight and chlorophyll contents of 15 day old seedlings of all the three rice cultivars and the inhibitory effect of the extracts was concentration dependent. However, at 5% of C. rotundus and10% of C. dactylon extracts did notaffect seed germination of IR-20 . Among the rice cultivars,the higher degree of growth inhibition was observed in ADT-36followed by BPT-5204 and IR-20 . The weed C.rotundusexhibited more intense on growth suppression of rice cultivars thanC.dactylon.

scholarly journals ALLELOPATHIC INFLUENCE OF SOME WEED RESIDUES ON GROWTH AND DEVELOPMENTAL CHANGES OF GREEN GRAM (VIGNA RADIATA (L.) WILCZEK)

2017 ◽  
Vol 4 (2) ◽  
pp. 173-177
Author(s):  
Kavitha D ◽  
Prabhakaran J ◽  
Arumugam K
Keyword(s):  
Vigna Radiata ◽  
Higher Plants ◽  
Growth Promotion ◽  
Growth Parameters ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Green Gram ◽  
Inhibitory Effects ◽  
Weed Species ◽  
The Individual

The term allelopathy refers to the detrimental effects of higher plants of one species (the donor) on the germination, growth, or development of another species (the recipient). In the present studyallelopathic influence of weed species, Echinochloa colona (L.) Link, (Poaceae), Cleome viscosa L. (Capparidaceae) and Ammania baccifera L. (Lythraceae) on green gram (Vigna radiata (L.) Wilczek were investigated. The individual and combined residues of three weeds wereincorporated to the soil at the quantities of 0,1,2,3 and 4% (w/w) in the plots and the germination, seedling growth dry weight of green gram were assessed. The results showed that all the concentrations of combined weed residues exhibited higher degree of inhibitory effects than the individual weed residues in all the parameters employed in the study except at 1% of C. dactylon, where insignificant growth promotion observed. The percentage of inhibitory effects of weedresidues increases with increasing the magnitude of the residues. The degree of reduction percentage of all the growth parameters was concentration dependent.Among the three weeds, A. baccifera had more retarding effects on the growth of green gram and the order of inhibitory effect of three weed was A.baccifera, C. viscosa and E. colona.

scholarly journals The Impact of Dairy Effluent on Germination Parameters of Seeds of Mung bean (Vigna radiata) and Mustard (Brassica nigra)

2020 ◽  
Vol 7 (4) ◽  
pp. 170-175
Author(s):  
Jyoti Kapil ◽  
◽  
Neetika Mathur ◽  
Keyword(s):  
Vigna Radiata ◽  
Mung Bean ◽  
Growth Parameters ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Brassica Nigra ◽  
Dairy Effluent ◽  
Industrial Sectors ◽  
The Impact

The advancement of a country depends upon its industrialization. Of all industrial sectors, the food processing units have highest consumption of water and are biggest producers of effluent per unit of production.The concentration and composition of the effluent depends upon operating methods andthe size and design of the processing plant.The dairy industry generates on an average 6-10 litres of waste water per litre of the milk processed. It has relatively high organic matter, suspended solids, trace organic nutrients which are essential for growth of crop plant. Thus, the utilization of the dairy effluent for irrigation can be an eco friendly approach for its disposal. The present study was carried out to study the influence of dairy effluent on seed germination, seedling growth and biomass production in mung bean (Vigna radiata) and mustard (Brassica nigra). The seeds of both the plant species were grown in petriplates and pots irrigated with various concentrations of dairy effluent (20, 40, 60, 80 and 100%). The dairy effluent concentration of 20% was more favorable for total growth parameters viz., the germination percentage, the shoot length, dry weight and wet weight both in mustard and mung bean. Among different concentrations, 100% concentration of effluent caused inhibitory effect. Thus, it is recommended that only after suitable dilution, the dairy effluent can be effectively used for irrigation.

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