scholarly journals Evaluation of soursop (Annona muricata L) leaf extract on the control of fleabeetles (Podagrica spp.) and yield of okra (Abelsmoschus esculentus L. Moench)

2020 ◽  
Vol 17 (2) ◽  
pp. 21-33
Author(s):  
H.C. Ogbuehi ◽  
M.O. Onuh

The study was carried out to find the effect of different concentrations of Soursop (Annona muricata L) leaf extract on control of Podagrica spp. and  yield of okra plant (Abelnusclus esculentus (L. Moench.), at the Teaching and Research Farm at Imo State University, Owerri. The experiment was laid out in a randomized completely block design (RCBD) with five treatment levels and four replications. The treatment levels were 0% control(T1), diluted ethanol(T2), 25%concentration(T3), 50%concentration(T4) and 75%concentration(T5) leaf extracts of Annona muricata. Application of these treatments were done weekly and data were collected on number of Podagrica spp., number of damaged leaves, number of infested plants. Results indicate that the application of 75% leaf extract effectively reduced the number of (0.5) Podagrica spp. at maturity stage which was significantly different (p<0.05) from control (9.5). Higher Yield, (248.59kg/ha), mean number of fruits (35.75) and mean fresh weight (43.732g) were significantly recorded from higher dose (75%) of leaf extract of Annona muricata. Number of damaged leaves, number of infected plants were reduced  significantly by all the treatments compare to control. The result showed that Annona muricata Leaf extract possess insecticidal potential in controlling this pest hence could be use as alternative to synthetic insecticide because it is environmentally friendly and cost effective Keywords: Annona muricata, Podagrica spp., Okra, Leaf extracts and yield 

AGRICA ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Maria Goreti Firma

This study aims to determine the effect of tobacco plant extracts on mortality of armyworm pests (Spodoptera litura F.) and determine the optimum concentration of tobacco leaf extracts on mortality of armyworm caterpillars on mustard plants in the field. The design used in this study was a Randomized Block Design (RBD) consisting of 5 treatments and 4 replications namely T1: 175 ml/L concentration of tobacco leaf extract, T2: 350 ml/L concentration of tobacco leaf extract T3: Concentration of 525 ml/L tobacco leaf extract, T4: Concentration of 700 ml/L tobacco leaf extract, T5: Concentration of 875 ml/L of tobacco leaf extract. The observation variables in this study were pest mortality (%), damage intensity (%), plant fresh weight, and fresh weight per hectare (ton). The results showed that the concentration of tobacco leaf extracts significantly affected the mortality of Spodoptera litura F. At the concentration of T5 treatment (875 ml) were the lowest damage, pest mortality, fresh weight of the mustard plant, and fresh weight per hectare of was 9.75%, 88%, 109.25 gr, and27.31 tons respectively.


AGRICA ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 1-8
Author(s):  
Maria Goreti Firma

This study aims to determine the effect of tobacco plant extracts on mortality of armyworm pests (Spodoptera litura F.) and determine the optimum concentration of tobacco leaf extracts on mortality of armyworm caterpillars on mustard plants in the field. The design used in this study was a Randomized Block Design (RBD) consisting of 5 treatments and 4 replications namely T1: 175 ml/L concentration of tobacco leaf extract, T2: 350 ml/L concentration of tobacco leaf extract T3: Concentration of 525 ml/L tobacco leaf extract, T4: Concentration of 700 ml/L tobacco leaf extract, T5: Concentration of 875 ml/L of tobacco leaf extract. The observation variables in this study were pest mortality (%), damage intensity (%), plant fresh weight, and fresh weight per hectare (ton). The results showed that the concentration of tobacco leaf extracts significantly affected the mortality of Spodoptera litura F. At the concentration of T5 treatment (875 ml) were the lowest damage, pest mortality, fresh weight of the mustard plant, and fresh weight per hectare of was 9.75%, 88%, 109.25 gr, and27.31 tons respectively.


AGRICA ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 1-8
Author(s):  
Maria Goreti Firma

This study aims to determine the effect of tobacco plant extracts on mortality of armyworm pests (Spodoptera litura F.) and determine the optimum concentration of tobacco leaf extracts on mortality of armyworm caterpillars on mustard plants in the field. The design used in this study was a Randomized Block Design (RBD) consisting of 5 treatments and 4 replications namely T1: 175 ml/L concentration of tobacco leaf extract, T2: 350 ml/L concentration of tobacco leaf extract T3: Concentration of 525 ml/L tobacco leaf extract, T4: Concentration of 700 ml/L tobacco leaf extract, T5: Concentration of 875 ml/L of tobacco leaf extract. The observation variables in this study were pest mortality (%), damage intensity (%), plant fresh weight, and fresh weight per hectare (ton). The results showed that the concentration of tobacco leaf extracts significantly affected the mortality of Spodoptera litura F. At the concentration of T5 treatment (875 ml) were the lowest damage, pest mortality, fresh weight of the mustard plant, and fresh weight per hectare of was 9.75%, 88%, 109.25 gr, and27.31 tons respectively.


2020 ◽  
Vol 19 (1) ◽  
pp. 1
Author(s):  
La Ode Santiaji Bande ◽  
Gusnawaty HS ◽  
Mariadi Mariadi ◽  
Nuriadi Nuriadi

Effectiveness of botanical insecticide formulations against cocoa pod borer Conopomorpha cramerella (Snell.). Cocoa pod borer (CPB), Conopomorpha cramerella (Lepidoptera: Gracillariidae), is a major pest on cocoa plants. The research aimed atfinding out botanical insecticide formulations that are effective against CPB. Plant materials used for preparing the formulations were cashew nut shell (Anacardium occidentale), whiteflower albizia (Albizia saponari), siam weed (Chromolaena odorata), and candle bush (Senna alata) extract. This research was conducted in the field using a randomized complete block design with the following treatments: formulation of cashew nut shell extract, cashew nut shell extract + whiteflower albizia bark extract, cashew nut shell extract + siam weed leaf extract, cashew nut shell extract + candle bush leaf extract, cashew nut shell extract + whiteflower albizia bark extract + siam weed leaf extract + candle bush leaf extract, and a synthetic insecticide formulation containing a mixture of lambda-cyhalotrin 106 g/L and thiametoxam 141 g/L as well as control (without botanical and synthetic insecticide treatment). The concentration of botanical pesticides applied from cashew nut shell extract used was 2.5 mL/L, while from other ingredients 250 mL/L.Variables observed were intensity of CPB infestation, degree of damage to the cocoa seed, and the efficacy of botanical insecticide treatments. The results showed that the test botanical insecticide formulations reduced the intensity of CPB infestation by 48.9–55.3% and the degree of seed damage by 52.3–58.2% compared with control. The efficacy of the test botanical insecticide formulations in controlling CPB was relatively the same when compared to each other, with a range of efficacy of 64.2–71.0%, but was lower than that of the synthetic insecticide formulation (92.8% efficacy). The implication of this research is that botanical insecticide formulations have the prospect of being continuously developed and have the potential to reduce the used of synthetic insecticides.


2020 ◽  
Vol 06 (12) ◽  
Author(s):  
AKILAPA, TEMITOPE PETER ◽  

The use of chemical fertilizers to improve soil fertility, and hence, crop yield, have been reported to have adverse effects on agricultural products, man and his environment, hence, this research looked into the growth and yield response of foliar application with Moringa oleifera leaf extract on Okro. Different concentrations of Moringa leaf extracts at the rate of 5ml, 15ml and 25ml was assessed on the growth and yield of Okro using topsoil as the growing medium. The experiment was laid out in a randomized complete block design with three replicates. Growth and yield parameters were collected on plant height, number of leaves per plant, number of fruits per plant, and length of fruit per plant. Parameters measured were subjected to Analysis of Variance (ANOVA) for Completely Randomized Design (CRD) and means were separated using Duncan’s Multiple Range Test (DMRT) at 5% probability level. The results showed that the treatment with 25ml concentration has a more significant effect than others on Okro. Therefore, treatment with 25ml performed better than the other two treatments in the study area. Hence, this study recommends the foliar application of Moringa extract to farmers for improved yield and production of Okro.


Author(s):  
Itefa Degefa Alemu ◽  
Beka Yadeta Tefara ◽  
Tarike Getachew Tefara ◽  
Alemnesh Tigabu Fetene

<div class="WordSection1"><p class="abstract"><strong>Background:</strong> Allelopathy is considered as an effective and environmentally friendly method to control the weeds and consequently enhances crop production. <em>Lantana camara</em> L. is a major exotic weed spreading rapidly in wastelands and agricultural fields. The ability of this weed to germinate fast and to inhibit the growth of other neighboring plants smoothest way for its quicker growth in an ecosystem.</p><p class="abstract"><strong>Methods:</strong> This study was carried out at Bule Hora University in the biology laboratory to assess haricot bean (<em>Phaseolus vulgaris</em> L.) genotypes at germination stage under the effects of allelochemical leaf extract from <em>Lantana camara</em> L. at different concentration levels. <em>L. camara</em> leaf and seven genotypes of haricot bean responsible for this study were collected from the local farmer’s farm land in Bule Hora Woreda with their local name. Experiment was carried out with completely randomized block design with three replications in petridishes where three seeds of haricot bean were planted in each 84 petridishes and 0 gram/100 millileter (control), 2 gram/75 millileter (treatment 1), 2 gram/50 millileter (treatment 2) and 2 gram/25 millileter (treatment 3) grinded powder of <em>L. camara</em> L.: distil water were applied to petridishes daily. Germination parameters like germination day, number of germinated seeds, plumule length, radicle length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, germination percentage, germination index and inhibition or stimulation were collected.</p><p class="abstract"><strong>Results:</strong> The result showed that there were variation responses of haricot bean genotypes parameters to each concentration levels of <em>L. camara</em> leaf extracts. Germination day, plumule length and radicle length were significantly influenced by <em>L. camara</em> leaf extract. The values of germination day, plumule length, shoot fresh weight and root fresh weight were decreased with the increasing of concentration levels. From the all genotypes Nasir was highly influenced in days to germination which shifted from 7.67 to 10.33 days. The correlation between concentration and all parameters were also seen that concentration and parameters plumule length (-0.428), shoot fresh weight (-0.015), root fresh weight (-0.237), shoot dry weight (-0.074) and root dry weight (-0.144) showed negatively correlated with concentration level. It can be concluded that allelopathic leaf extracts of lantana can inhibit germination parameters of some haricot bean genotypes which should take attention by breeders and farmers to avoid such weed from the crops.</p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">Generally it can be concluded that concentrated aqueous leaf extract of <em>L. camara</em> L. weed species inhibited germination day, plumule length, shoot fresh weight and germination index of haricot bean (<em>p. vulgaris</em> L). High concentration levels of this chemical has high influential power on the germination parameters of this crop. </span></p></div>


Kultivasi ◽  
2019 ◽  
Vol 18 (2) ◽  
Author(s):  
Shalahuddin Mukti Prabowo ◽  
Sangrani Annisa Dewi

 Sari. Banyak petani cabai yang menggunakan pestisida kimia sebagai pilihan utama untuk mengendalikan penyakit keriting. Penelitian ini bertujuan mempelajari potensi ekstrak tumbuhan berdaya antivirus: bunga pukul empat dan pagoda,  dalam mengendalikan penyakit keriting pada cabai yang disebabkan virus. Penelitian ini dilakukan di lahan endemi penyakit keriting pada cabai merah di daerah Kabupaten Sukoharjo. Penelitian ini dilaksanakan mulai bulan April sampai Juni 2018. Bahan yang digunakan adalah tanaman sebagai bahan pesisida nabati: bunga pukul empat dan pagoda. Alat yang digunakan blender, sprayer, jerigen, baskom dan alat tulis. Penelitian menggunakan rancangan acak kelompok (RAK) dengan 5 perlakuan, yaitu tanpa perlakuan pestisida nabati; ekstrak daun bunga pukul empat konsentrasi 50 mL/L; ekstrak daun bunga pukul empat konsentrasi 100 mL/L; ekstrak daun pagoda konsentrasi 50 mL/L; dan ekstrak daun pagoda konsentrasi 50 mL/L. Setiap plot perlakuan terdiri dari 3 kali ulangan.  Hasil penelitian menunjukkan perlakuan ekstrak daun pukul empat dan pagoda memberikan insidens penyakit dan keparahan penyakit lebih rendah daripada tanpa perlakuan pestisida nabati, sehingga memberikan hasil yang lebih baik. Hasil cabai terbesar, yaitu sebesar 255 g, diperoleh dari perlakuan ekstrak bunga pukul empat dengan konsentrasi 100 mL/L. Kata Kunci: Cabai rawit, bunga pukul empat, pagoda, ekstrak daun  Abstract. Many chili farmers use chemical pesticides as the main choice for controlling curly diseases. This study aimed to redundant the potential of leaves extracts: four o'clock flower and pagodas, in controlling chili disease caused by viruses. This research was carried out in the endemic area of curly disease in red chili , Sukoharjo Districts. This research was carried out from April to June 2018. The material used plants as organic pesticides: leaves of four o'clock flowers and pagodas. Tools are used: blenders, sprayers, jerry cans, basins and stationery. The study used a Randomized Block Design (RBD) with five treatments of leaf extracts application. There were without organic pesticides application, leaves of four o'clock flower with concentration 50 mL/L; leaves of four o'clock flower with concentration 100 mL/L; leaves of pagoda flower with concentration 50 mL/L; and leaves of pagoda flower with concentration 100 mL/L. Each treatment plot replicated three times. The results showed that leaves extract of four o’clock flower and pagoda gave lower disease incidence and disease severity than without organic pesticide, so yield of plants are higher. the best yield, about 255 g, is given by leaf extract of four o'clock flower at the dose of 100 mL/L. Keywords: Cayenne pepper, four o'clock flower, pagoda, leaf extract


Author(s):  
Maruvoor Arasi K ◽  
Krishnaveni C

 Objective: The objective of this study is to evaluate the potential of in vivo antipyretic activity of the aqueous leaf extracts of Annona muricata L. and Spermacoce articularis. L.f.Methods: The acute oral toxicity was determined by the Organization of Economic and Cooperation Development-423 class methods, and the in vivo antipyretic activity was determined by brewer’s yeast induced pyrexia method.Results: The results showed that the aqueous leaf extract of A. muricata. L and S. articularis L.f plants is non-toxic and possessed significant antipyretic effect.Conclusion: This study provides evidence for the antipyretic activity of A. muricata. L and S. articularis L.f. The aqueous leaf extract of S. articularis L.f at a dose of 400 mg/kg showed a more significant effect (p<0.01) in lowering the hypothermia than the extract of A. muricata L but found to have a similar effect as the standard drug aspirin (100 mg/kg).


Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1273
Author(s):  
María G. González-Pedroza ◽  
Liliana Argueta-Figueroa ◽  
René García-Contreras ◽  
Yaiza Jiménez-Martínez ◽  
Eduardo Martínez-Martínez ◽  
...  

Cancer is one of the most prevalent diseases in the world and requires new therapies for its treatment. In this context, the biosynthesis of silver nanoparticles (AgNPs) has been developed to treat different types of tumors. The Annona muricata plant is known for having anticancer activity. Its main compounds present in the leaves, stems and skin, allowing for its use as reducing agents. In this manuscript, AgNPs with leaf extract (AgNPs-LE) and fruit peel extract (AgNPs-PE) of A. muricata were biosynthesized obtaining an average nanoparticle diameter sizes smaller than 50 nm, being 19.63 ± 3.7 nm and 16.56 ± 4.1 nm, and with a surface plasmonic resonance (SPR) at 447 and 448 nm, respectively. The lactone functional group present in the LE and PE extracts was identified by the FTIR technique. The behavior and antiproliferation activity of AgNPs-LE and AgNPs-PE were evaluated in breast, colon and melanoma cancer cell lines. Our results showed that Annona muricata fruit peel, which is a waste product, has an antitumor effect more potent than leaf extract. This difference is maintained with AgNPs where the destruction of cancer cells was, for the first time, achieved using concentrations that do not exceed 3 μg/mL with a better therapeutic index in the different tumor strains. In conclusion, we present a low-cost one-step experimental setup to generate AgNPs-PE whose in-vitro biocompatibility and powerful therapeutic effect make it a very attractive tool worth exploiting.


2021 ◽  
Vol 4 (1) ◽  
pp. 63-74
Author(s):  
Djamilah Djamilah ◽  
Umm Ro'ina Rosyda ◽  
Yudhi Harini Bertham

Chili is one of the important agricultural commodities in Indonesia.  Myzus persicae Sulz. is one of the important pests in Chili cultivation because it can cause damage up to 80%. Nabati insecticide utilization is one of the safer alternatives to control and more environmentally friendly than synthetic insecticides. One Nabati insecticide utilization that can be used in controlling pests are Ageratum conyzoides L extract and Sapindus rarak D.C  extract . The purpose of this study was to determine the effectiveness of A. Conyzoides extract S. rarak extracts and extract S. rarak mixture of both in the control of M. persicae. This research was factorial, treatment consisted of 2 factors: 1 Nabati insecticide consists of  A. Conyzoides and S. Rarak and factor of 2 each given concentration is 0 ml, 10 ml, 20 ml, 30 ml. Using a completely randomized design (CRD) with 16 treatments 3 replications. The results variance showed that the treatment performed with extracts from A. conyzoides effect on mortality, damage to crops, M. persicae life,  and leaf greenness level after treatment. Extract treatment S. Rarak effect on mortality, M. persicae life and leaf greenness level after treatment. While treatment mix A. conyzoides leaf extracts and fruit extracts S. rarak effect on mortality, M. persicae life. The results showed that the treatment is effective in controlling pests aphids M. persicae are A. conyzoides leaf extract mixture of 30 ml and 30 ml S. rarak fruit extract with the highest mortality value of 96.14%, which gives a real influence in the control of aphids M. persicae and different real control. LC50 and LC90 showed the best application in the control extract are 18.46 ml and 51.86 ml.


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