Field reaction of some Jute (Corchorus spp.) varieties to yellow mite, Polyphagotarsonemus latus Banks (original) (raw)
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Reviews In Food And Agriculture, 2020
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...
A B S T R A C T Field screening of eight most popular jute varieties belonging to both olito‐ rius and capsularis species was done against the major pests in the farm of Bidhan Chandra Krishi Viswavidyalaya, West Bengal during 2005 and 2006. Among the varieties, JRO‐524 was found to be moderately resistant to Ano‐ mis sabulifera and susceptible to Spilarctia obliqua and Myllocerus discolor. The variety JRO‐7835 was moderately resistant to S. obliqua, M. discolor and Polyphagotarsonemus latus but susceptible to A. sabulifera. The variety JRO‐ 632 was found to be highly susceptible to M. discolor but moderately sus‐ ceptible to other pests. The variety JRO‐878 showed moderate susceptibility to P. latus, A. sabulifera, S. obliqua and Apion corchori but was highly suscep‐ tible to M. discolor. Among the capsularis varieties, JRC‐7447 and JRC‐321 were susceptible to A. sabulifera but moderately resistant to other major pests. Variety JRC‐212 was most susceptible to A. corchori but moderately resistant to other pests. The variety JRC‐4444 was found moderately resis‐ tant to S. obliqua, A. sabulifera and resistant against M. discolor and P. latus. Further, the fibre production capacity of the varieties under different pest's pressure was found higher in olitorius varieties than capsularis varieties. The relatively higher yield recorded under varying pest levels over two consecu‐ tive seasons is an indicative of greater field tolerance of olitorius jute varieties.
International Journal of Agricultural Invention
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. obliqu...
Journal of entomology and zoology studies, 2018
An experiment was conducted to determine the effect of relatively cheaper, safer inputs of compatible management combination on yellow mite. The experiment was laid out in randomized block design with seven treatments replicated thrice. Two spraying of each treatment was done at 15 days interval. The effect of treatment was significant on post treatment mite population recorded after spray for both the season. Among the treatments, T5 [Lecanicillium lecanii (2x108 cfu/gm)@3gm/lit at 35 DAS+Spiromesifen 240 SC@0.7 ml/lit at 50 DAS] was found to be the most effective combination. The post treatment observation during 2015 and 2016 at 7 days after treatment indicated significantly less number of mites i.e.(1.47 and 2.30 mites/sq. cm) and (1.02 and 0.83 mites/sq. cm) respectively in the treatment T5. Among the treatments, maximum plant height (222.24 and 221.14 cm) yield (36.29 and 37.44 q/ha) and benefit cost ratio (1.25 and 1.32) were also observed in treatment T5.
The mite is considered as one of the major limiting factors of jute production in Bangladesh. So it is essential to select genotypes with the desired resistance allele combination using DNA markers. Eighty-eight SSR primers were used to screen the mite resistant and sensitive parents. Among them only twenty-one primer pairs showed polymorphism. A genetic linkage map was constructed using these polymorphic primers in one hundred and fifty F2 populations, derived from a cross between the parents. The SSR markers J-170 and HK-89 have been mapped at 34.1 cM and 35.4 cM, respectively, on either side of the phenotypic marker. These two markers (J-170 and HK-89) along with HK-64 showed 100% selection efficiency in combination.
Agricultural Science
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 a...
Current Journal of Applied Science and Technology
An experiment was conducted during pre-kharif season of 2016 and 2017 to determine the efficacy of relatively cheaper, safer horticultural mineral oil on yellow mite (Polyphagotarsonemus latus). The experiment was laid out in randomized block design with seven treatments [T1- mineral oil @ 3 ml/litre at 35 and 50 days after sowing, T2- mineral oil @ 6 ml/litre at 35 and 50 DAS, T3- mineral oil @ 9 ml/litre at 35 and 50 DAS, T4-Neem oil @ 3 ml/litre at 35 and 50 DAS, T5- mineral oil @ 3 ml/litre + neem oil @ 3 ml/litre at 35 and 50 DAS and T6- Control] replicated four times. Two scheduled spraying of each treatment was done on standing jute crop at 15 days interval. The effect of treatments was significant on post treatment mite population recorded after spray for both the cropping season. Among the treatments, T5 was found to be the most effective combination. The post treatment observation during 2016 and 2017 at 7 days after treatment indicated significantly less number of mites i...