Yellow Mite Research Articles

Comparative Economics of Different Management Tactics by Novel Insecticides against Pest Complex on Capsicum (Capsicum annuum L.) under Protected Conditions

Field experiment was conducted under shade net house at Hi-Tech Horticulture Farm, Rajasthan Agricultural Research Institute, Durgapura (Sri Karan Narendra Agriculture University, Jobner), Jaipur, Rajasthan to work out the economics and cost benefit ratio of different management strategies by three spraying of eleven bio-rationale and newer pesticides against Yellow Mite, Polyphagotarsonemus latus (Banks), thrips, Scirtothrips dorsalis Hood, aphids (Aphis gossypii Glover, Myzus persicae Sulzer), Whitefly, Bemisia tabaci (Gennadius) and Beat army worm, Spodoptera exigua (Hubner) during summer 2014 and 2015 on capsicum (Capsicum annuum L.). The result on the basis of pooled data indicated that maximum net profit of Rs 77185/ha was obtained in the treatment of fipronil 0.005% with the yield of 51.46 q/ha followed by emamectin benzoate 0.002% (Rs 67422/ha) with the yield of 49.77 q/ha. The minimum net profit of Rs 23840/ha was recorded in the treatment of NSKE 5% followed by azadirachtin 0.0003% (Rs 29876). The net profit ranging from Rs 53613/ha to Rs 60263/ha was computed in the treatment of acephate (Rs 53613/ha), spiromesifen (Rs 59971/ha), spinosad (Rs 58262/ha) and indoxacarb (Rs 60263/ha), whereas, Rs 39125/ha to 41476/ha was found in propargite and novaluron. The maximum incremental cost benefit ratio (1:20.23) was found in fipronil (0.005%) followed by 1:17.99 in the treatment of acephate (0.075%). The minimum ICBR (1:4.64) was recorded in the treatments of novaluron followed by spinosad (1:5.96). Study revealed that three spray of fipronil 5 SC @ 1 ml/l or emamectin benzoate 5 SG @ 0.4 g/l can be suggested to the farmers for the management of pest complex on capsicum under shade net house conditions during summer for off season production.

Efficacy of Some Insecticides Against Thrips and Yellow Mites in Chilli

Efficacy of some insecticides new chemistry insecticides was evaluated against chilli thrips Scirtothrips dorsalis and yellow mite Polyphagotarsonemus latus, during kharif, 2019 and green and red chilli samples were subjected to residue analysis to evaluate the persistence of sprayed pesticides. Spinetoram 11.7SC at 60 g a.i./ ha was observed to be superior in managing chilli thrips with a mean reduction of 93.35% with least thrips population (0.53/ top 3 leaves) followed by cyantraniliprole 10.26OD at 60 g a.i./ ha and spirotetramat 15.31OD with 90.78 and 85.44 mean % reduction, respectively. Management of yellow mites was effective in plots treated with abamectin 1.9EC at 7 g a.i./ha of 85.73 mean per cent reduction followed by chlorfenapyr 10SC at 100 g a.i./ ha (83.48%) and emamectin benzoate 5SG at 10 g a.i./ ha (76.64%). Lambda-cyhalothrin and chlorantraniliprole residues were detected in green and red chilli among the sprayed pesticides.

Prediction of major pest incidence in Jute crop based on weather variables using statistical and machine learning models: A case study from West Bengal

Jute crop cultivated in Cooch Behar suffers a substantial amount of physical and economical loss every year due to several major insect pest infestation such as Yellow Mite (Polyphagotarsonemus latus Banks) and Jute Semilooper (Anomis sabulifera Guen). Constructed seasonal plots reveal that for Yellow Mite pest incidence is maximum at 55 DAS, while for Jute Semi Looper it is at 45 DAS. Correlation analysis indicate that the weather parameters such as minimum temperature at current week, maximum RH at one week lag, minimum temperature, minimum and maximum RH at two week lag are significantly correlated with the incidence of Yellow Mite, while in case of Jute Semilooper maximum temperature, minimum and maximum RH at two week lag are significantly correlated. Different forecasting models like ARIMA, ARIMAX, SARIMA, SARIMAX and SVR have been fitted and validated using RMSE values. In case of Jute Semilooper, SARIMAX model is found to be the best fitted model followed by SVR and SARIMA. Similarly, for Yellow Mite ARIMAX model produces the least RMSE value followed by SVR and ARIMA. Following successful model validation, forecasting is done for the year 2022 using the best fitted models.

Efficacy of plant based formulation against yellow mite of chilli (Polyphagotarsonemus latus Banks)

Efficacy of plant based formulation against yellow mite of chilli (Polyphagotarsonemus latus Banks)

Impact of feeding activity of yellow mite, Polyphagotarsonemus latus (Banks) on moisture content of mulberry leaf

Impact of feeding activity of yellow mite, Polyphagotarsonemus latus (Banks) on moisture content of mulberry leaf was studied through leaf moisture content analysis of mite infested and healthy leaves of five popular mulberry varieties viz., V -1, Mysore local, M -5, Vishwa/DD and Tr – 10 at UAS, GKVK, Bangalore. The leaf moisture content in the healthy leaves of different mulberry varieties ranged from 68.45% to 80.67% and 28.17% to 37.55% in mite infested leaves. It was observed that the damage caused by yellow mite on mulberry resulted in loss in the moisture content of the leaves. The percent leaf moisture content in different varieties varied from 68.45 to 80.05% in the healthy leaves and 29.63 to 37.55% in mite infested leaves. The maximum loss in the leaf moisture content was 62.99% in the mulberry variety V- 1 (from 80.05% to 29.63%) followed by 60.01% in Mysore local (from 74.10% to 29.63%), 58.85% in Tr – 10 (68.45 to 28.17%), 53.45% in M -5 (80.67 to 37.55%). Lowest reduction in leaf moisture content recorded was 48.19% in variety Vishwa/DD (70.90 to 36.73%).

Seasonal Incidence of Phytophagous and Predatory Mites on Capsicum Under Nethouse

Capsicum is a popular vegetable crop grown under protected cultivation, but it provides congenial microclimate for insects and mites. The present study evaluates the seasonal incidence of mites on capsicum under nethouse conditions (2017, 2018). Simple, partial, and multiple correlation/regression coefficients of the incidence of mites with weather parameters revealed that the yellow mite Polyphagotarsonemus latus (Banks) exhibits significant negative correlation with minimum temperature and significant positive correlation with morning relative humidity (RH). With two spotted spider mite Tetranychus urticae Koch and predatory phytoseiid and stigmaeid mites, it was observed that there exists a significantly positive correlation with maximum, minimum and mean temperature but a negative one with morning RH. The weather parameters individually do not have much effect on mite incidence when other weather parameters were kept constant (partial correlation); however, all weather parameters had significant effect on mite incidence (multiple correlation). Preference of two spotted spider mite and yellow mite for different plant canopy level was also worked out; it was found that T. urticae preferred middle canopy followed by top and bottom ones, while P. latus preferred top canopy followed by others.

Impact of Bifenthrin on Yellow Mite in Pepper Plants under Field Conditions at Wadi Al-Mollak, East Delta, Egypt

Impact of Bifenthrin on Yellow Mite in Pepper Plants under Field Conditions at Wadi Al-Mollak, East Delta, Egypt

PESTICIDAL EFFECT OF SELECTED PLANT EXTRACTS ON Polyphagotarsonemus latus (BANKS) INFESTATION IN Corchorus olitorius L. JUTE

Many plant extracts could be considered as natural effective tool against yellow mite instead of synthetic chemicals. The research was aimed at studying the effects of plant extracts on Polyphagotarsonemus latus Banks infestation and jute yield production. This experiment was conducted in Manikganj, Bangladesh following randomized complete block design with three replications. Treatments were Neem oil 3% (T1), Neem leaf extract @ 1:30 (T2), Mahagoni seed extract @ 1: 10 (T3) Turmeric powder extract @ 1: 40 (T4), Garlic paste extract @ 1:30 (T5) and control (T6). Percent reduction of mite population was found in neem oil (87.94%), neem leaf extract (85.76%) and garlic paste extract (86.48%) at 72 hrs after spray. After 7 days of spraying, Neem oil treated plot received the best reduction (89.05 %) followed by neem leaf extract (87.03%), Mahogany (79.60%), turmeric (78.02%), and garlic (80.06%), respectively. Neem oil treated plot showed highest fibre yield (2.95tha-1). Control plot showed highest mite infestation with lowest yield contributing attributes. Neem oil/leaf extract and mahogany seed extracts were found effective to control yellow mite infestation resulting higher fibre yield production.

Diversity of mite fauna and varietal screening against yellow mite, Polyphagotarsonemus latus (Bank) in chilli under Gangetic basin of West Bengal, India

The present study was undertaken to explore the diversity of predatory mites as well as their associated phytophagous prey mites for development of better and ecologically sound mite pest management strategy and to select suitable cultivars from an indigenous gene pool against yellow mite. Eight chilli cultivars were screened and incidence pattern of yellow mite was observed during the period of investigation. Results revealed that none of the cultivars were resistant against the yellow mite but BCCH-SL-4 was found least susceptible to yellow mite. Altogether 12 species of predatory mites belonging to 5 families were encountered in chilli crop. The predatory mite families included Phytoseiidae, Cunaxidae, Bdellidae, Tydeidae, and Ascidae represented by the genera Amblyseius, Typhlodromips, Euseius, Neoseiulus, Paraphytoseius, Scapulaseius, Cunaxa, Bdellodes and Tydeus. The associated phytophagous mite families were recorded like Tetranychidae, Tenuipalpidae and Tarsonemidae represented by the genera Tetranychus, Schizotetranychus, Eutetranychus, Brevipalpus and Polyphagotarsonemus. Mite in the family Phytoseiidae was found to be the most common predators and Typhlodromips syzygii was observed as predominant predory mite species followed by Amblyseius largoensis.

Management of mites with homemade neem fruit aqueous extract in capsicum under protected cultivation

Capsicum is a highly nutritious and commercial vegetable crop grown in open field and protected conditions throughout the world. But two-spotted spider mite, Tetranychus urticae Koch and yellow mite, Polyphagotarsonemus latus (Banks) cause major problems in its cultivation under protected conditions resulting in significant losses. The objective of this study was to evaluate the efficacy of different biorationals especially neem fruit aqueous extract against T. urticae and P. latus under poly-nethouse and open field conditions in different vegetable growing areas of the state from 2017–2019. Results revealed that the homemade neem fruit aqueous extract (NFAE) was moderately effective causing 41–62% reduction in the mite population. In the NFAE treated plots the yield varied from 234.76 to 242.79 q/acre as compared to 247.99 q/acre in Malathion 50 EC® 4ml/L with significant differences as compared to control (224.69 q/acre). These botanicals can be integrated for effective mite management programs under protected conditions.

Effectiveness of Some Plant Materials against Jute Yellow Mite on Corchorus Olitorius

An experiment was conducted to evaluate the effectiveness of plant materials against yellow mite (Polyphagotarsonemus latus) on jute (Corchorus olitorius) cv. 0–9897 in both greenhouse and field condition at BJRI during the period from March to October 2016. In greenhouse premises, the highest mortality (69.39, 67.77, 63.86, 62.43 and 61.47%) was recorded in extract of neem seed kernel @ 1:20, mehogony seed, pithraj seed, turmeric powder and green neem leaf, respectively. In field condition, the highest reduction (70.20%) of infestation over control, lowest nodes plant–1 (52.50), tallest plant (3.10 m) and highest yield increased (38.60%) over control were observed in neem seed kernel extract @ 1:20. In conclusion, neem seed kernel extract, mahogany seed extracts, pithraj seed extract, green neem leaf extract and turmeric powder extract @ 1:20 can be safely used by the farmers as components of IPM program of Jute.
 Environ. Sci. & Natural Resources, 12(1&2): 165-170, 2019

A RESPONSE OF SOME JUTE (CORCHORUS SPP.) ACCESSIONS TO JUTE YELLOW MITE, POLYPHAGOTARSONEMOUS LATUS BANKS UNDER NATURAL CONDITION

The jute yellow mite Polyphagotarsonemus latus constitutes one of the major pests of jute crop in Bangladesh. The objective of this work was to find out the sources of resistance/tolerance accessions against jute yellow mite. This experiment was carried out in the fields of Bangladesh Agricultural University, Mymensingh, JAES, Manikganj and the Central station, BJRI, Dhaka, during jute growing seasons 2011 and 2012. Out of 79 accessions, only 13 accessions were found less susceptible to yellow mite. These accessions were studied further in the field and net-house condition. Considering the level of infestation in the net-house condition only three accessions namely 1510, 890 and 33-1-244 (A) 2 were found to perform better showing 9.75, 9.68 and 9.93% infestation. In field condition, in case of olitorius, accession 1510 showed lowest infestations (9.90%) giving maximum plant height 324.15 cm and yield 3.26 ton/ha. In case of capsularis, accession 890 also resulted minimum infestation (10.23%) giving satisfactory plant height 315.27 cm and yield 3.14 ton/ha respectively. Accessions 1510, 890 and 33-1-244 (A) 2 could be recommended as breeding materials for evolving yellow mite resistant jute variety.

BIONOMICS OF THE JUTE YELLOW MITE, POLYPHAGOTARSONEMUS LATUS (BANKS) (ACARI: TARSONEMIDAE) IN JUTE (CORCHORUS OLITORIUS L.) AT DIFFERENT TEMPERATURE-HUMIDITY

The jute yellow mite Polyphagotarsonemus latus constitutes one of the major pests of jute crop in Bangladesh. The objective of this work was to study the biology of the P.latus, to determine its temperature-humidity responces in jute (Corchorus olitorius L.) var. O-9897. Bionomics of jute yellow mite, Polyphagotarsonemus laenerationtus (Banks) were studied in the laboratory of Bangladesh Jute Research Institute during March 2013 to September 2013. The incubation period of yellow mite on the variety O-9897 was 1.95 days for female and 1.90 days for male; larval period of 1.00 days for female, 0.75 days for male ; pupal period of 0.70 days for female and 0.71 days for male ; egg-adult period of 3.65 days for female and 3.44 days for male were highest in the 1st generation with 25.55±0.15oC and 56±1.47% relative humidity among three generations. pre-oviposition and oviposition period was o.65 days and 12.25 days. The highest longevity 13.45 days for female and 8.50 days for male. The daily mean of eggs were 2.20, 1.91 and 1.75 eggs in three successive generations. The number of eggs laid per female in her life time was 28.6, 24.8 and 12.2 eggs.

Investigation on the Natural Enemies of Jute Yellow Mite and Their Performances and Seasonal Incidence

The jute yellow mite Polyphagotarsonemus latus constitutes one of the major pests of jute crop in Bangladesh. The objective of this work was to investigation on the natural enemies of jute yellow mite. The investigation on the natural enemies of jute yellow mite were studied in the laboratory of Bangladesh Jute Research Institute during March 2011 to September 2013. As many as six predators of jute yellow mite viz, Predatory mite, Thrips, Minute pirate bug, Lady bird beetle, Mirid bug and Spider were collected and identified. The predation rate of the predatory mite Amblyseius sp. showed an average of 8.8 jute yellow mite per hour in laboratory condition. Predatory mite reached the peak on the 20th June. The highest population was 25 predatory mite/25 leaves. The population of predatory mite declined sharply in the 1st week of July. The nymph and adult of Scolothrips consumed an average of 15.4 and 20.10 yellow mite per hour. Scolothrips sp reached its peak population on 30th June and declined occurred in the 1st week of July. Both nymph and adult stage of Orius sp. predate 24.5 and 21 jute yellow mite respectively. The highest number of Minute pirate bug 20 was recorded at 30th June. Both the grubs and adults of lady bird beetle predate on all the stage of yellow mite. Grub was found as voracious feeder showing a predation efficiency of 35 per hour. The highest and lowest number of Ladybird beetle was recorded on 25th June and 5th May respectively. The highest 15 Mirid bug was recorded at 30th June. An unidentified species of spider was found to consume yellow mite.

Evaluation of newer acaricides against yellow mite <em>polyphagotarsonemus latus</em> (Banks) on Bt cotton.

Field trial was conducted for two consecutive years during kharif 2017 and 2018 at farmer`s field, Kadarmandalagi by using randomized block design (RBD). In both years, among the 12 treatments including untreated plot tested against yellow mite stages indicated that lowest mean population of yellow mite egg and active stages recorded in spiromesifen 280 SC @ 100 g.a.i/ ha and propargite 57 EC @ 570 g.a.i/ ha treated plots followed by diafenthiuron 50 WP @ 400 g.a.i/ ha and fenazaquin 10 EC @ 125 g.a.i/ ha. However, among the chemicals, predatory mite activity noticed more in bifenthrin 10 EC @ 80 g.a.i/ ha treated plot followed by buprofezin 25 SC @ 150 g.a.i/ ha treated plot. Seed cotton yield revealed that the treatment with propargite 57 EC @ 570 g.a.i/ ha recorded highest yield and net returns (26.99 q/ ha and 110348 Rs/ ha) and significantly superior compared to other treatments.

Evaluation of different biorationals against yellow mite, Polyphagotarsonemus latus (banks), (acari: Tarsonemidae) infesting capsicum (Capsicum annuum var. frutescens) under protected cultivation

The yellow mite, Polyphagotarsonemus latus (Banks) is a major pest of capsicum under protected cultivation. It causes severe damage on under surface of chilli leaves which results in significant reduction of yield. The study was conducted at KVK, Nurmahal, Jalandhar (Punjab) to evaluate different biorationals (botanicals, entomopathogens, horticultural mineral oil, predatory mite along with acaricides) against P. latus. Among all the biorationals, reduction was more than 80 per cent in propargite and spiromesifen against both egg and active stages of P. latus. In egg stage of P. latus, minimum reduction (30 - 40%) was observed in entomopathogens and botanicals while per cent reduction was found to be 42 - 47 due to predatory mite Neoseiulus longispinosus. For active stages of P. latus, per cent reduction range varied from 35 -51 for botanicals, entomopathogens, and N. Longispinosus with least reduction in Horticultural mineral oil (35%). However all the treatments were found superior in reducing the population of mite over untreated check.

Infectivity of entomopathogenic fungal bio-agents on yellow mite, Polyphagotarsonemus latus Banks of jute

Yellow mite is a serious pest of many field and horticultural crops including jute. As repeated use of acaricides possess problem of resistance, alternatively, the infectivity of talc based formulation of three entomopathogens, i.e., Lecanicillium lecanii (Ll), Isaria fumosorosea (= Paecilomyces fumosoroseus ) (Pf) and Beauveria bassiana (Bb) at 4x10 8 cfu/ml, and 6x10 8 cfu/ml concentrations were evaluated against yellow mite under laboratory condition. In both the concentrations, Pf and Bb recorded significantly higher mortality of yellow mite than Ll. At 3-DPT (days post treatment) significantly highest mortality was observed in Pf (30.35%) followed by Bb (21.59%) and Ll (4.87%). Later on at 4 and 5-DPT period the level of mortality in Pf and Bb treated population was at par but significantly higher than Ll. At 5-DPT, Pf recorded maximum cumulative mortality (40.92%) at par with Bb (35.99%) and significantly higher than Ll (12.92%). Significantly higher cumulative mortality at 6x10 8 CFU/l concentration during 5 days after treatment was 34.35%. The infectivity of talc based formulation of Ll at both the concentrations was significantly less than Pf and Bb. Higher infectivity of I. fumosorosea indicates it to be ideal for yellow mite control in jute.

Field screening of common jute (Corchorus olitorius) varieties against major pests in Eastern Terai region of Nepal

Field screening of eleven most popular jute varieties belonging to Corchorus olitorius species was done against the major pests in the farm of Jute Research Programm, Itahari, Sunsari, Nepal during 2017 and 2018. Different species of pests belonging to insects, mites and nematodes were found feeding on jute. Among them, jute Semilooper (Anomis sabulifera Guen.), Bihar hairy caterpillar (Spilarctia obliqua Wlk.), yellow mite (Polyphagotarson emuslatus Banks), are causing economic damage to the jute crop. Eleven jute varieties were selected to conduct varietal preference and tested against major pest of jute in field condition. Among the eleven varieties JRO-524 was found to be moderately resistant against the Semilooper (A. sabulifera) and Bihar hairy caterpillar (S. oblique) but least susceptible to yellow mites. Likewise, the variety KEN-DS-058, KEN-DS-066, BJRI-1965 and BJRI-1968 showed highly susceptible to major pest Semilooper (A. sabulifera), Bihar hairy caterpillar (S. oblique) and yellow mites. The variety BRD-SRB-061, YA-41, O-4, KEN-BL-130, Itahari-2 showed moderate resistance to Semilooper (A. sabulifera), Bihar hairy caterpillar (S. oblique) but moderately susceptible to yellow mites. Further, the fibre production capacity of the varieties under different pest’s pressure was found relatively higher in variety JRO-524 followed by YA-41, BRD-SRB-061, KEN-BL-130 and O-4 respectively. The relatively higher yield recorded under varying pest levels over two consecutive seasons is an indicative of greater field tolerance of olitorius jute varieties.

Evaluation of acaricide mixtures against chilli yellow mite Polyphagotarsonemus latus

The mixture of acaricides propargite+ hexythiazox resulted in more mortality of the chilli yellow mite Polyphagotarsonemus latus than their individual sprays. It also gave a higher % kill as compared to fenazaquin, fenpyroximate, and neem oil. With the first spray, propargite+ hexithiazox @ 567+27 a.i, there was maximum reduction in the life stages of P. latus (81.15%) compared to its other doses, other acaricides and also neem oil. Similarly, with second spray too its dose @ 567+27 a.i gave maximum mortality (82.73%), followed by its dose @ 525+25 a.i (76.18%).

Evaluation of Different Mutants Against Insect and Mite Pests With Natural Enemies in Coastal Jute Ecosystem

Jute is a rapid growing agricultural fiber crop and renewable source of biomass. The study was conducted to evaluate different jute mutants against insect and mite pests with associated natural enemies. Results revealed that 8 insect and mite pests and 8 natural enemies were recorded from coastal jute ecosystem. Jute hairy caterpillar and yellow mite were found to be the most damaging pests in jute field. Significantly the lowest per cent plant infestation per 5 rows was recorded in mutant BJC-214 (14.37) followed by BJC-7370 (14.81) and the highest per cent plant infestation (30.77) was found in mutant VM-1. Significantly the lowest per cent leaf infestation was in mutant HC-3 (25.40) followed by HC-95 (31.08) while the highest per cent leaf infestation per plant was recorded in mutant BJC-83 (46.30). In case of leaf area damage, the lowest per cent was observed in mutant HC-3 (9) followed by CVL-1 (10) and the highest was in mutant CVE-3 (45) followed by mutant 0-72 (30). Among different mutants, HC-3, CVL-1 and BJC-214 were found to be less infested by jute hairy caterpillar and these mutants could be used for multilocational trial for final recommendation as the tolerant mutants.
 Asiat. Soc. Bangladesh, Sci. 44(1): 23-33, June 2018