scholarly journals EVALUATION OF GARLIC (Allium sativum) AND ONION (Allium cepa) EXTRACTS FOR THE MANAGEMENT OF FALL ARMYWORM (Spodoptera frugiperda) ON BABY CORN (Zea mays L) UNDER GREENHOUSE CONDITIONS

2020 ◽  
Vol 4 (2) ◽  
pp. 64-69
Author(s):  
Munyore, M. ◽  
Rioba, N. B.

The effects of Allium sativum and Allium cepa extracts on the Fall Armyworm and growth of Babycorn (Variety SG 18) under greenhouse conditions were evaluated. Treatments were laid out in a Randomized Complete Block Design (RCBD) with 3 replications. The factors included solvents used: Dichroloromethane (DCM), Methanol (Me), Distilled water (Di) and type of plant used: Allium sativum and Allium cepa. The positive and negative controls were Coragen SC 200 (Co) and distilled water (Di), respectively. Data collection and analysis was done using appropriate procedures. The extraction yield was highest with Methanol for A cepa and distilled water for A sativum, while DCM yielded the least for both plants. Saponins, glycosides, alkaloid and tannins were present in all the plant species, but their presence was influenced by the solvent type. Flavoniods were only present in DCM-A sativum extract whose content was 5.2378 ± 0.1094 mg/mL. DCM and Methanolic extracts of A cepa and A sativum were as effective as Coragen SC 200 against FAW larvae as opposed to distilled water extract. No significant differences were noted for plant height and leaf numbers. Further evaluation should be done towards making commercially available and effective insecticide for integrated FAW management.

2006 ◽  
Vol 6 (1) ◽  
pp. 52-58
Author(s):  
Cipta Ginting

Germination of Hemileia vastatrix uredospores on crude water extracts of zinger and turmeric rhizome and clove and Piper betle leaves.  Coffee leaf rust caused by H. vastatrix especially on Arabica coffee is one of most important diseases in coffee and conventional control methods of leaf coffee rust is still unsatisfactory.  The objective of this study was to determine the effect of crude water extract on the germination of H. vastatrix uredospores.  The study was conducted from January to September 2004 in the Laboratory of Plant Pathology at Unila.  In each test, treatments were arranged in a randomized complete block design with four replications.  Crude water extract was prepared by homogenizing 100 g of material in 100 ml sterilized distilled water.  After being passed through four layers of sterilized cheesecloth, the mixture was defined as the aliquot (100% extract) and dilutions were made with sterile distilled water to obtain concentrations of 2.5 to 10%.  Each of four materials (zinger, turmeric, clove, and Piper betle) was tested separately in five aliquot concentration levels.  One ml of each extract was mixed with 0.25 ml of uredospora suspension (4 x 105 per ml), and 0.2 ml of the mixture was incubated.  The variable was germinated uredospora (%) that was determined under a mikroscope.  The results show that significant reduction in spore germination occurred by  turmeric, clove, and P. betle extracts at > 2.5% and by zinger extract at > 5%.  Some uredospora exposed to plant extract germinated abnormally:  germ tubes shorten, swollen, or malform.


2021 ◽  
Vol 3 (4) ◽  
pp. 31-37
Author(s):  
Nada Elsheikh M. Kona ◽  
Awad KhalafallaTaha ◽  
AbubakerHaroun Mohamed Adam ◽  
Mohammed E. E. Mahmoud

The Fall armyworm worm (FAW) (Spodopterafrugiperda) is one of the important economic pests which goes on several field crops and causes serious damage. The aim of this study was to look for efficient, less cost and environmentally friend plant extract for controlling Fall armyworm worm in cereal crops. A Complete Randomized Block Design (CRBD) experiments with three replications were conducted in the laboratory to investigate the insecticidal effects of four plant extracts consisting of ethanolic extract of Neem (Azadirachta indica) seeds, Black pepper (Piper nigrum) seeds, Usher (Calotropis procera ) leaves and water extracts of Argel (Solenostemma argel) leaves on larvae of the Fall armyworm (FAW) (Spodoptera frugiperda). Newly emerged larvae of FAW were treated topically by 4 concentrations (10, 25, 50 and 75%) of each extract, and then the larval mortalities were calculated after 24, 48 and72 hrs. The results showed the highest concentrations (75%) of the three ethanolic extracts gave higher mortality percentages (100%) after 72 hrs of exposure, compared with other concentrations. Also, these were not significantly different from the recommended dose of the standard pesticide “Spinosad”. On the other hand, Argel water extract showed no effect on the (FAW) larvae. It is recommended that this experiment to be replicated under different environments.


2021 ◽  
Vol 18 (4) ◽  
pp. 787-794
Author(s):  
Amita Mittal ◽  
Manpreet Manpreet ◽  
Geeta Dhania

The present study aims to assess the antimicrobial and antioxidant activity of selected medicinal plants (Achyranthes bidentata, Linum usitatissimum, Pedalium murex, Sphaeranthus indicus and, Terminalia bellirica) extracts against seven different microorganisms Candida albicans, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus hominis, and Streptococcus mutants. Leaf, root, and flower extracts of plants were prepared in different solvents like methanol, distilled water, dichloromethane, ethanol, ethyl acetate, chloroform, petroleum ether, propanol, benzene, and hexane. All the prepared extracts showed very good antimicrobial activity except distilled water extract. Most of the extracts were found to have antimicrobial potential against pathogens but Linum usitatissimum and T. bellirica leaf and seed extract prepared in methanol and chloroform solvents show a higher zone of inhibition against E. coli. Only Linum usitatissimum shows activity aganist Candida albicans. Minimum Inhibitory Concentration for Achyranthes bidentata extracts varied from 150µl/ml to 200µl/ml in different solvents. Antioxidant studies were carried out in methanolic extracts of all the plants. The maximum scavenging activity of methanolic leaf extracts was observed between 80 -100 μg/ml concentrations.


2020 ◽  
Vol 4 (2) ◽  
pp. 66-71
Author(s):  
Redempta S. Kalinda ◽  
Naomi B. Rioba

AbstractFall armyworm (Spodoptera frugiperda, J.E. Smith) is a pest with devasting effects on maize. A laboratory biassay was conducted to analyse the phytochemicals and determine the efficacy of M. spicata and R. officinalis extracts on FAW. Treatments were laid out in a Completely Randomized Design (CRD) with 3 replications. The factors included solvent [Methanol (Me), dichloromethane (DCM), distilled water (Di)] and the plant species (M. spicata and R. officinalis). Coragen SC 200 (Co) and Distilled water (Di) were the positive and negative controls, respectively. FAW rearing, plant extract preparation and phytochemical screening were done using standard procedure. Data collection and analysis was done using standard procedures. The extract yield was highest for R. officinalis regardless of the solvent used. Me-R. officinalis and Di-M. spicata extracts yielded the highest. Saponins, glycosides, alkaloid, flavonoids and tannins. Flavonoid contents were 7.9036 mg/mL and 6.0073 ± 0.6117 mg/mL in methanolic extract of M. spicata and R. officinalis, respectively. M. spicatha and R. officinalis extracts caused 100% mortality to 3rd instar larvae. Based on the findings, both M. spicata and R. officinalis have several secondary metabolites that confer insecticidal activity of the plants against FAW, hence should be evaluated under field conditions.


Author(s):  
Debby Moniharapon ◽  
Maria Nindatu

Background: Garcil (Allium sativum) is an important commodity and has high economic value in Indonesia.Studies have been using water extracts of garcil as larval mortality Crocidolomia binotalis in august –september 2014. This study aimed to determine the effect of water extract of Garlic (Allium sativum) on mortality of larvae on cabbage plants Crocidolomia binotalis. Methods: This study was an experimental study, using a rando mized block design (RBD), using the control group, and treatment concentraction of water extracts of garlic (Allium sativum). Concentration ranging from 2%, 4%, 6%, 8% with observation for 24 hours. Data effect of aqueous extract of garlic is effective against larval mortality Crocidolomia binotalis analyzed by real difference test (LSD) and the determination of the value of LC50, using SPSS. Result: The results showed the water extract of garlic is effective for larval mortality Crocidolomia binotalis is the concentration of 6% and of probit analysis LC50 values of 4,632%. Conclusion: Concentration of 4,632% aqueous extract of garlic (Allium sativum) can kill larvae Crocidolomia binotalis after administration of the extract and observation for 24 hours


2019 ◽  
Vol 15 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Kanza A. Awan ◽  
Masood S. Butt ◽  
Iahtisham Ul Haq ◽  
Hafiz A.R. Suleria

Background: Garlic (Allium sativum) possesses health enhancing abilities due to the presence various phytoceutics moities. The current research was deigned to explore the phytochemicals and antioxidant capacity of Pakistani garlic. Methods: Garlic extracts were obtained using methanol, hexane and ethyl acetate at different time intervals (35, 50 and 65 min) followed by their polyphenols and flavonoid content determination. Afterwards, the antioxidant potential was also determined. Results: The outcomes revealed that the methanolic extracts obtained at 50 min extraction time showed maximum total phenolics as 60.38±0.23 mg GAE/100g and flavonoids as 58.45±1.24 mg/100g. Similarly, the highest DPPH activity (61.59±1.58%) and β-carotene and linoleic acid potential (64.96±1.72%) were also observed for methanolic extract. Conclusion: Inferences were made that Pakistani garlic contains myriad of phenolics and flavonoids but the extraction of these components depends upon the solvent/time combination. In this study, methanol proved to be the ideal solvent for the maximum extraction of phytochemicals from garlic.


2012 ◽  
Vol 77 (5) ◽  
pp. M278-M284 ◽  
Author(s):  
Sunčica Kocić-Tanackov ◽  
Gordana Dimić ◽  
Jelena Lević ◽  
Ilija Tanackov ◽  
Aleksandra Tepić ◽  
...  

2020 ◽  
pp. 159-169
Author(s):  
Narel Y. Paniagua-Zambrana ◽  
Rainer W. Bussmann ◽  
Carolina Romero

2019 ◽  
Vol 3 (2) ◽  
pp. 66
Author(s):  
Taufiq Hidayat ◽  
Prapto Yudono ◽  
Endang Sulistyaningsih ◽  
Arif Wibowo

Shallot (Allium cepa L. Aggregatum group) is one of the most widely utilized vegetables by Indonesian people. Some technologies have been adapted to improved shallot productivity. One of those are the application of beneficial microorganisms. We applied mycorrhizal fungi, Trichoderma sp., and Bacillus thuringiensis as well as the combination among these microorganisms were applied in Shallots cultivation and were investigated to improve the growth and development of shallot. A field experiment was arranged in a Randomized Complete Block Design with two treatment factors. The first factor consisted of two shallot cultivars, namely Biru Lancor and Crok Kuning; whilst the second factor consisted of six beneficial microorganism treatments, i.e. control, mycorrhizae, Trichoderma sp., Bacillus thuringiensis, the combination of mycorrhizae and Trichoderma sp., and the combination of those three microorganisms. The observation was conducted on infection percentage of mycorrhizae, total population of Trichoderma sp., leaf area, leaf area index, net assimilation rate, crop growth rate, harvest index, and plant yield. The data obtained were subjected to analysis of variance (ANOVA) and continued with Duncan’s Multiple Range Test (DMRT) at 5% significance level. The results showed the leaf area of shallot was improved as affected by the application of mycorrhizal fungi. The effectiveness and implication of mycorrhizal fungi on shallot growth would decrease if the application of was combined with other microorganisms. However, the application of beneficial microorganisms had not been able to increase component yield and yield of Biru Lancor and Crok Kuning, indicated by bulb weight, number of bulb, bulb diameter, number of bulb per cluster, and bulb yield per hectare.


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