Neem Oil Research Articles

Evaluation of neem oil against powdery mildew (Erysiphe polygoni DC) of green gram (Vigna radiata L.)

Evaluation of neem oil against powdery mildew (Erysiphe polygoni DC) of green gram (Vigna radiata L.)

OPTIMISATION OF A NEEM OIL BASED MINIMUM QUANTITY LUBRICATING (MQL) SYSTEM PARAMETERS FOR THE ORTHOGONAL MACHINING OF MILD STEEL

Cutting tools experience early failure and dimensional variation due to the high temperature developed during machining. Conventional cutting fluid applications do not successfully remove heat because they do not reach the chip-tool contact. Operators on the work floor may experience the adverse side effects of cutting fluids, such as skin and respiratory issues. As a result, a different lubricating method is necessary for machining without harming the tool-workpiece, which would also be advantageous for health and the economy. This research aims to develop and evaluate the efficiency and optimization of minimal use of Neem seed oils as lubrication for the Taguchi L9 array-based design for machining of mild steel. The Taguchi optimization technique was used to examine the impact of the neem oil based Minimum quantity lubrication (MQL) system (with flow rate, air pressure and nozzle diameter as factors) on the workpiece temperature and chip thickness ratio at cutting speeds of 260 rpm and 470 rpm. The outcome demonstrated that optimal settings at 260 rpm were a flow rate of 50 ml/hr, air pressure of 1.5 bars, and nozzle diameter of 0.8 mm for workpiece temperature, and a flow rate of 100 ml/hr, air pressure of 1 bar, and nozzle diameter of 0.8 mm for chip thickness ratio. At 470 rpm, optimal settings for workpiece temperature were a flow rate of 50 ml/hr, air pressure of 1.5 bars, and nozzle diameter of 0.5 mm, while chip thickness ratio optimization indicated a flow rate of 100 ml/hr, air pressure of 1 bar, and nozzle diameter of 0.5 mm.

Antiaging Performance of Mixed Oil Insulation Developed Using Modified Neem Oil and Mineral Oil for Distribution Transformers

Antiaging Performance of Mixed Oil Insulation Developed Using Modified Neem Oil and Mineral Oil for Distribution Transformers

Molecular identification and eco-friendly management of rice brown planthoppers in Bangladesh

Infestation by various insect pests is the main constraint for growing rice where rice brown planthopper (Nilaparvata lugens Stål) can severely damage rice plants directly through feeding. Therefore, the study aims to detect rice brown planthoppers (BPH) and provide environment-friendly management tactics to mitigate the problem which caused by brown planthoppers. The BPH samples were collected from rice fields of different locations in the Patuakhali of Bangladesh for molecular identification. A molecularly single species of rice brown planthopper, Nilaparavata lugens was identified using mitochondrial cytochrome oxidase subunit I (mtCOI) universal marker. The nucleotide sequences of collected samples were compared with other nucleotide sequences from the GenBank database of NCBI, which make single clades in the phylogenetic tree at an insignificant distance. Moreover, brown planthopper management observations were recorded in laboratory conditions after providing an artificial diet with different treatments of plant-based insecticides Neem oil (1 %, 5 %, and 10 %), Castor oil (1 %, 5 %, and 10 %) where only 20 % sucrose solution was used as negative control and Abamectin (1 %, 5 % and 10 %) were also used as a positive control for comparing the efficacy of plant-based insecticides on rice brown planthoppers. The results showed the highest mortality (100 %) of rice brown planthoppers was recorded by Abamectin 10 %, followed by Abamectin 5 %. Neem 10 % performed better than Abamectin 1 % during 1st hour. Initial after exposure of 2nd hour for Abamectin 1 % revealed greater mortality (59 %) than Neem 10 %. Neem 5 % showed less effect on mortality in brown planthopper than Neem 10 % but was higher than Neem 1 % during 6 h of observation. The Castor oil of 10 % caused higher mortality than the Castor of 5 % but not up to the marks of Abamectin and different concentrations of Neem oil. Castor oil of 1 % and control have shown no mortality of brown planthopper for 6 h of observation.

Effect of Selected Insecticides against Earias vittella (Fabricius) on Okra Abelmoschus esculentus L.

At the Sam Higginbottom University of Agriculture, Technology and Sciences in Prayagraj, Uttar Pradesh, India, a field experiment took place out at the Central Research Farm (CRF). Using a variant of Kasturi, the experiment was set up using a Randomized Block Design (RBD) with eight treatments that were each replicated three times. The treatments viz., Lambdacyhalothrin 2.5% EC@0.5-1ml/lit, Spinosad 45%SC @0.3-0.4ml/lit Flubendiamide 480SC @0.3ml/lit, Chlorantraniliprole18.5%SC 0.5ml/lit, Imidacloprid17.8%SL@ 1ml 2.5l, Emamectin benzoate 5%SG@5 g/land Neem oil@ 20 ml/l and along with untreated control were used against fruit and shoot borer (Earias vittella) infesting okra. All treatments have been shown to be significantly superior to control when analyzing the data on the larval population of the fruit and shoot borer of okra after the first and second spray. Among all the treatments Chlorantraniliprole 18.5%SC showed lowest larval population 10.21 and 9.98 by Spinosad 45% SC(11.45,12.29%), Emamectinbenzoate 5% SG(13.86,14.11%), Imidacloprid 17.8% SL(16.94,15.87%) Lambdacyhalothrin 2.5% EC(17.83,16.03%) Flubendamide 480SC (19.25and19.40%) Neemoil 20ml/l (20.35 and18.75%) Control 5% (24.84 and 25.98%). The highest yield and cost benefit ratio was recorded in Chlorantraniliprole 18.5% SC(153q/ha,1:6.54) followed by Spinosad 45% SC(150q/ha,1;6.01) Emamectinbenzoate 5% SG(125q/1;5.54), Imidacloprid 17.8% SL(117q/ha,1:5.28) Lambdacyhalothrin 2.5% EC(105q/ha1:4.83), Flubendamide 480 SC(79q/ha, 1:3.56 and Neemoil 20ml/l (7 0 q / h a ,1:3.03).

Eco-friendly and sustainable approaches against aphids management (Myzus persicae) and dissipation studies of imidacloprid in important cash crop capsicum under protected and open condition

Capsicum is generally infested with many biotic agents mainly sucking insects, among them the major is aphid (Myzus persicae). Chemical management is one of the most common strategies for their management. However, there are no recommended insecticides for insect management in polyhouse. An experiment was designed to assess the bio-potency of four popularly used insecticides (Imidacloprid-17.8SL, Acephate-75SP, Dimethoate-30EC and Buprofezin-25SC), a botanical (Neem oil 10000 ppm) and two entomopathogenic fungi (Metarhizium anisopliae 1.15%WP and Lecanicillium lecanii 1.15%WP) for two consecutive seasons. Most effective and the highest reduction of aphid population (78.14–81.92 %) were found in imidacloprid (17.8SL) treated plots. This effective molecule imidacloprid was further studied for its dissipation pattern under polyhouse and open condition and found that the imidacloprid residues in capsicum fruit dissipated below quantification limit (BQL) within 10days after final spray and the residues in the soil sampled at harvest time were found below the detection level. The half-lives of imidacloprid were 1.88 and 2.61 days under polyhouse and 1.07 and 1.52 days in open field at recommended doses (25 g a.i. ha−1) and double doses (50 g a.i. ha−1) of application respectively. The dietary exposure of imidacloprid on capsicum fruit under both conditions exposed that hazard quotient (HQ) values obtained from the different treatment doses have not exceeded the upper limit of toxicity (HQ < 1) and imidacloprid residues in the fruits were found below the existing MRL (Maximum Residue Limit) values (0.5 mg/kg) at 3 days after its final applications. Thus, imidacloprid may be considered as the effective chemical management option against aphids in capsicum under polyhouse and open field having no harmful effect on human consumption.

Efficacy of Neem Oil against Termite [Odontotermes obesus (Rambur)] (Blattodea: Termitidae)

Botanical pesticides are of great importance in Integrated Pest Management (IPM). Extracts of different plant parts are used for deterring and killing the various life stages of insects. Most of the oils produced by plants contain bioactive compounds with insecticidal properties. Neem oil containing azadirachtin is an established insecticide and insect repellent. Use of synthetic pesticides for wood preservation leads to environmental pollution and health hazards to human beings and other living organisms. To avoid these problems neem, Azadiracta indica (A.Juss.) plant oil was used in this study and gave better results. The weight loss of card boards treated with neem was less like chlorpyrifos treated cardboards. Gravimetric measurements of cardboards shown 18.34gm and 16.85 gm weight which after 30 and 60 days of exposure to A. indica oil indicated that plant oil has potential effects like conventional pesticides like chlorpyrifos which showed the18.72 and 18.63 gm of weight in cardboards after 30 and 60 days of exposure. The P values was 0.036457 and 0.016527 for cardboards exposed to two treatments after 30 and 60 days respectively which is highly significant.

Assessment of Seed Protectants in Respect to Quantitative Losses Due to Callosobruchus chinensis Linn in Stored Pigeon Pea

To test the efficacy of seven tested seed protectants viz., Spinetoram, Flupyradifurone Emamectin benzoate, Deltamethrin, Neem oil, Dry Neem Leaf and Azadirachtin along with control were used against Callosobruchus chinensis Linn in stored pigeon pea under ambient condition in Seed Entomology laboratory, ANDUAT, Ayodhya during year 2021-22. All the seed protectants were evaluated for their effectiveness on the basis of seed damage, seed weight and seed moisture against pulse beetle under ambient condition for a period of 2, 4 and 6 months. Among tested seed protectants the Emamectin benzoate 5 SG followed by Spinetoram 11.7 SC and Neemoz Gold 1EC was found most effective as seed protectants with least seed damage and weight loss of seed up to 6 months of storage.

SYNERGISTIC EFFECTS OF NEEM OIL AND GENTAMICIN ON PSEUDOMONAS AERUGINOSA VIA PHZM GENE DOWNREGULATION: A COMPREHENSIVE REVIEW

Exploring the antibacterial potential of neem oil (Azadirachta indica) in combination with gentamicin (GEN) against pathogenic molds, especially Pseudomonas aeruginosa, has drawn concern due to the quest for natural treatment options against incurable diseases. Prospective research directions include looking for natural cures for many of the currently incurable diseases available now. microbial identification system, were used to identify the isolates. The research utilized a range of methods, such as the diffusion agar well (AWD) assays, TEM (transmission electron microscopy) analysis, minimum inhibitory concentration (MIC) assays, and real-time PCR (RT-qPCR) to analyze bacterial expression and the antibacterial action of neem oil (Azadirachta indica) combined with gentamicin (GEN) against the pathogenic bacteria Pseudomonas aeruginosa between others. The combined effects of neem oil and GEN on P. aeruginosa are extensively investigated in this study, with particular attention paid to the downregulation of the virulent factor gene phzM, inhibition of biofilm formation, morphological changes, and gene expression, in that proportion. Results show that neem oil has strong antibacterial activity against P. aeruginosa and S. aureus, preventing the formation of biofilms and causing morphological alterations. In addition, the synergistic effects of neem oil and GEN are demonstrated, together in order with the downregulation of the phzM gene in P. aeruginosa. These results highlight the increased effectiveness of neem oil when combined with GEN and point to the potential of the oil as a stand-alone antibacterial agent. They also highlight the need for more study to overcome antibiotic resistance in harmful bacteria. Overall, our results point to a possibility that neem oil extract, either alone or in combination with GEN, can suppress the development of pathogenic microbes. This synergistic impact is related to the downregulation of a virulence factor gene. To address the drug resistance linked to pathogenic microbes, greater study is required. Novelty of study addresses the important issue of antibiotic resistance by exploring the potential synergistic effects of neem oil and gentamicin on pathogenic bacteria, particularly Pseudomonas aeruginosa. This topic is highly relevant in the context of the global challenge of antimicrobial resistance.Novelty and relevanc the important issue of antibiotic resistance by exploring the potential synergistic effects of neem oil and gentamicin on pathogenic bacteria, particularly Pseudomonas aeruginosa. This topic is highly relevant in the context of the global challenge of antimicrobial resistance.

Field Efficacy and Economics of Certain Biopesticides and Chemicals against Gram Pod Borer, Helicoverpa armigera (Hubner) on Greengram [Vigna radiata (L.) Wilczek

In the kharif season of 2023–2024, a field experiment was carried out at the in Eight treatments—Spinosad 45SC, Ha NPV 1X109ml/min, Neem seed kernel extract 10% WP, Emamectin Benzoate 5%SG, Azadirachtin (Neem oil) 0.03% WSP, Chlorantraniliprole 18.5SC, Bacillus thuringienssis 4% WSP, and untreated Control—were used in the RBD experiment. Each treatment was replicated three times. After the first and second sprays, data on the Helicoverpa armigera larval population showed that all treatments were much beter than the control. Following Chlorantraniliprole (18.5%SC) (0.323) as the least amount of larvae was recorded among all the treatments, Spinosade (45%SC) (0.456), Emamecttin benzoate (5%SG) (0.578), Azadirachtin (Neem oil) 00.03%EC (0.712), Neem seed kernel extract (10% The highest documented larval population in this case was 1x108CFU (1.112) of Bacillus thuringiensis. However, the treatment that produced the best yield (15.36 q/ha) was chlorantraniliprole 18.5% SC. An intriguing outcome was obtained when the cost-benefit ratio was calculated. The study found that, when compared to a control plot of 1:1.04, the most effective and cost-effective treatment was Chlorantraniliprol 18.5 SC (1:3.65), followed by Spinosade 45% SC (1:3.26), Emamectin benzoate 5% SG (1:2.94), and Azadirachtin (Neem oil) 00.03%EC (1:1.89), Neem seed kernel extract 10% WP (1:1.92), Ha NPV 1X109 POB ml/min (1:1.62), and Bacillus thuringiensis 1x108CFU (1:1.58).0.978, 1X 109 POB/ml/min. WP) (0.845), and Ha NPV 1X 109 POB/ml/min (0.978) were the next five treatments.

Efficacy of Certain Insecticides against Shoot and Fruit Borer, Leucinodes orbonalis (Gueenee) on Brinjal Crop Solanum melongena (L)

A field experiment was conducted at the Central Research Farm (CRF), Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh during Kharif season 2023. The experiment was laid in Randomized Block Design with eight treatments replicated thrice along with untreated control plot. Eight treatments viz. Novaluron @ 10% EC 0.5ml/lit, Spinetoram 11.7% SC @0.4g/lit, Emamectin benzoate 5% SG @0.4g/lit, Chlorantraniliprole 18.5SC@0.5ml/lit, Flubendiamide 39.35% SC @0.5 ml/lit, Neem oil 2% @20ml/lit, Beauveria bassiana1x108 CFU @ 2.5g/lit and untreated control were evaluated against shoot and fruit borer. During the investigation, it was revealed that the lowest percent shoot and fruit borer (Leucinodes orbonalis) infestation after 1st and 2nd spray was observed in the treatment Chlorantraniliprole 18.5 % SC i.e. 2.32% and 2.16%, followedby Emamectin benzoate 5% SG (3.21 and 2.97), Spinetoram 11.7% SC (3.81 and (3.30), Novaluron 10% EC (4.62 and 4.05), Flubendiamide 39.35% SC 5.39 and 4.903, Neem oil 2% 5.98 and 5.38 and Beauveria bassiana 1x108 CFU 6.35 and 5.48. The treatment Beauveria bassiana 1x108 CFU 6.35 and 5.48 was found to be least effective among all the treatments against Leucinodes orbonalis. The plot treated with Chlorantraniliprole 18.5% SC (241.75 q/ha, 1:13.14) was found most effective with highest yield and cost benefit ratio among all the treatment followed by Emamectin benzoate 5% SG (190.61 q/ha, 1:10.34), Spinetoram 11.7% SC (150.58 q/ha,1:7.92), Novaluron 10% EC (124.49 q/ha, 1:6.38), Flubendiamide 39.35% SC (104.34 q/ha, 1:4.34), Neem oil 2% @ (85.81 q/ha, 1:3.01) and Beauveria bassiana 1x108 CFU @ (65.83 q/ha1:2.80) as compared to untreated control plot (59.06 q/ha, 1:2.68).

Performance Evaluation of Biodiesel Blends from Mahua, Jatropha, and Neem Oils in Diesel Engines: A Comprehensive Review

Performance Evaluation of Biodiesel Blends from Mahua, Jatropha, and Neem Oils in Diesel Engines: A Comprehensive Review

Optimization of acetic acid – infused insecticide from avocado (persea americana) seed extract using microwave – assisted extraction method

Abstract Insecticides are widely used in households to control and manage pest populations. Biological insecticides are a more sustainable alternative, but they are often less effective. This study evaluated the effectiveness of avocado seed oil extract with added acetic acid as a bio-insecticide against Aedes aegypti mosquitoes. The researchers used microwave-assisted extraction to obtain the avocado seed oil. Avocado oil and acetic acid were formulated in different volume concentrations: 10%, 30%, 50%, 70%, and 90% (v/v) avocado seed oil extract-infused acetic acid. Assessment of its effectiveness is performed by directly spraying it on Aedes aegypti mosquitoes in a 70x70x70 cm glass cylinder setup and conducting knockdown and mortality tests. The avocado seed oil insecticide showed significant knockdown effectiveness (p= 2.07E-7, α= 0.95) against Aedes aegypti mosquitoes compared to both the positive control (Neem Oil) and negative control (acetic acid). At 1 mL application, all the concentrations have significant differences (p= 0.0044, α= 0.95). The 50% and 90% concentration show the highest efficacy, showing no significant difference (p-value= 0.0527, α= 0.95), the % Knockdown is 25.00% and 20.00%, respectively, while 30% is the lowest at 13.33% within 60 minutes. However, none of the test samples reached 50% knockdown in 60 minutes. At a 3 mL rate, all concentrations resulted in 100% mortality, and the 50% concentration was the fastest in 6 minutes but had no significant difference (p= 0.9746, α= 0.95) with 90% concentration at 10 minutes. All concentrations yield higher efficacy compared to the positive control in both 1 mL and 3 mL rates. In the 1 mL and 3 mL tests, there were no recorded instances of mortality in the pure acetic acid sample. Based on the results, the optimum product among all the formulated concentrations is 50% (v/v) avocado seed oil extract-infused acetic acid having a significant difference (p=2.83E-13, α= 0.95).

Application of Aspen Plus to Modelling and Simulation of Neem Seed Oil Extraction

The demand for neem oil keeps on increasing due to its wide applications in pharmaceutical, agro–allied industries, cosmetics and soap production. To avoid wastage of material and safety of operation and personnel, the designed plant must be simulated to predict its performance before actual construction. The property method based on the non–random two–liquid (NRTL) model of Aspen Plus V12 was used to simulate the designed plant and its predicted performances were 87.13% and 99.60% for quantity of neem oil to be obtained from the evaporator and quantity of solvent (ethanol) recovery from the condenser as against 85.93% and 94.93% of the practical result with 1.38% and 4.69% errors respectively. The extracted oil has iodine, acid and saponification values of 60.10 g I2/100 g, 4.2 mg KOH/g and 210.0 mg KOH/g respectively. The fatty acid compositions of oil are oleic acid, 46.61%; stearic acid, 11.83%; palmitic acid, 16.54%; 11 – octadecenoic acid, 3.58%; cis–vaccenic acid, 5.90%; cyclopropaneoctanal, 11.19%; squalene, 0.21% and trimethylsilyl–di(timethylsiloxy)-silane, 4.14%. Based on the quality and fatty acid composition of the extracted neem oil, it is highly recommended for cosmetics and soap production.

Evaluation of plant oils against angoumois grain moth, Sitotroga cerealella Olivier infesting stored rice

Angoumois grain moth, Sitotroga cerealella Olivier is one of the important insect pests during storages of ricee. Evaluation plant oils against the pest showed that all oils cause mortality over control. Among them neem oil @5ml/kg was found effective followed by pongamia oil as it causes mortality of S. cerealella, less weight loss and adult emergence.

Novel multi-purpose herbal topical formulation

The commercial need for herbal formulations is increasing now a days as natural remedies are more favored in the belief that they are safer with fewer side effects than synthetic ones. Therefore, it is rational to develop a multipurpose herbal cream that is free from toxic side effects, safe and effective with better patient compliance as compare to allopathic preparations. The present research work related to a multipurpose herbal cream was formulated and subjected to various evaluation parameters, and the findings obtained were evaluated for the limits. The herbal ingredients used to develop the herbal cream comprises aloe vera, Neem oil, turmeric, and rose water. The novel formulations were evaluated for various physicochemical parameters, including appearance, emulsion, pH, texture, homogeneity, irritancy, SPF, antimicrobial studies and identification of constituents. Among all the prepared creams both F1 &amp; F2 were observed as the best formulations. The present research work comprises assessing the moisturizing ability and skin protective ability of the formulated multipurpose herbal topical cream.

Response of cotton mealybug, Phenacoccus Solenopsis Tinsley (Sternorrhyncha: Pseudococcidae) to predators, neem oil, and synthetic insecticide under semi-field and field conditions

Response of cotton mealybug, Phenacoccus Solenopsis Tinsley (Sternorrhyncha: Pseudococcidae) to predators, neem oil, and synthetic insecticide under semi-field and field conditions

Farmers’ perceptions of innovation characteristics and adoption: Evidence from three fall armyworm (Spodopterafrugiperda) management methods in Benin

Several methods have been developed to support farmers in the management of the fall armyworm (Spodopterafrugiperda), which is a serious threat to maize production in Africa. These include the local soap Palmida, neem oil, and the semi-synthetic pesticide Emacot 19 EC. Based on Rogers' innovation theory, this study aimed to analyze farmers' perceptions of the characteristics of these control methods in order to identify potential obstacles to their adoption. The study used a quantitative (individual survey) and qualitative (focus groups interviews) approach to collect data from maize farmers. The results showed that the success of a management method at the farmer level will depend on its potential to minimize protection costs, its speed in eliminating larvae in an infested field, its accessibility in the farmer's immediate environment and the simplicity of its preparation and application. Considering these factors, Emacot 19 EC and Palmida soap are more likely to be adopted by farmers. This suggests that an effective extension strategy in Benin should focus on these two control products.

Detection of citrus greening disease and field efficacy of anti-pathogen chemicals against the disease in mandarin (Citrus reticulata Blanco.) in Gulmi, Nepal

Citrus cultivation in Nepal faces a persistent decline due to the widespread prevalence of Huanglongbing (HLB), also known as Citrus Greening Disease, across citrus-growing regions. This has resulted in significant economic losses for farmers, prompting them to actively seek preventive and remedial measures. In a study conducted at Resunga Municipality and Dhurkot Rural Municipality, Gulmi, aimed at addressing this decline, 51 orchards were assessed for HLB using the starch iodine test. Concurrently, the efficacy of anti-pathogen chemicals in managing citrus greening disease in mandarin (Citrus reticulata Blanco) was evaluated. An experiment was designed, incorporating eight treatments in a Randomized Complete Block Design (RCBD) with three replications. Each replication included eight treatments designated as follows: T1: Neem oil 5ml/l + Lentinan 2ml/l, T2: Neem Oil 5ml/l + B. amyloliquefacians 5ml/l, T3: Neem oil 5ml/l + Pseudomonas 5ml/l, T4: Imidacloprid 0.02% + Copper Oxychloride 0.025%, T5: Imidacloprid 0.02% + Streptocycline 250ppm, T6: B. thuringiensis 2ml/l + Pseudomonas 5ml/l, T7: B. thuringiensis 2ml/l + B. amyloliquefacians 5ml/l, T8: control. Results revealed that among the orchards tested, 18 were positive for HLB, representing 35.2% of the sample size. Notably, plots treated with Neem oil + B. amyloliquefacians and B. thuringiensis + B. amyloliquefacians exhibited the most significant reduction in disease severity compared to the control. Based on these findings, foliar application of Neem oil at a concentration of 5ml/l along with B. amyloliquefacians at 5ml/l, and B. thuringiensis at 2ml/l along with B. amyloliquefacians at 5ml/l at monthly intervals showed promising results in reducing the severity of citrus greening.

Efficacy of Selected Insecticides against Diamond Back Moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L.)

The research trial was undertaken at Central Research Field, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj. Experiment was laid in RBD with three replication consists of eight treatments viz, Emamectin benzoate 5% SG (0.4 gm/lit), Chlorantraniliprole 18.5% SC (0.5 ml/lit), Novaluron 10% EC (2 ml/lit), Spinosad 45% SC (0.5 ml/lit), Beauveria bassiana 1.15% WP (1 gm/lit), Neem oil 1% (10 ml/lit), Karanj oil 2% (20 ml/lit) and untreated control. The mean larval population of diamondback moth (Plutella xylostella) on cabbage at 3rd, 7th, and 14th days after two sprays revealed that the treatment Chlorantraniliprole 18.5% SC (2.63) observed the lowest population of diamond back moth followed by Spinosad 45%SC (2.96), Emamectin benzoate 5% SG (3.02), Novaluron 10% EC (3.32), Beauveria bassiana 1.15% WP (3.54), Neem oil 1% (3.70) and Karanj oil2% (3.85) as compared to control (5.45). Among the treatments studied, the best and most economical treatment was Chlorantraniliprole 18.5 %SC with 245.52 q/ha yield and cost benefit ratio (1:6.53), followed by Spinosad 45% SC 230.15 q/ha with (1:6.04) C:B ratio, Emamectin benzoate 5% SG 190.30 q/ha with (1:5.54) C:B ratio, Novaluron 10% EC 170.20 q/ha with (1:4.67) C:B ratio, Beauveria bassiana 1.15%WP 150.35 q/ha with (1:4.40) C:B ratio, Neem oil 1% 142 q/ha with (1:3.85) C:B ratio and Karanj oil 2% 135.45 q/ha with (1:3.68) C:B ratio and Control 65.20 q/ha (1: 1.97) C:B ratio.