Dr. Md. Mahbubur Rahman
@bsmrau.edu.bd
Assistant Professor, Department of Entomology
Bangabandhu Sheikh Mujibur Rahman Agricultural University
Over 12 years of experience in research, 03 month in teaching in home and abroad. Before joining at BSMRAU, Dr. Rahman was working as a Scientific Officer, Entomology Division at Regional Agricultural Research Station (RARS), Bangladesh Agricultural Research Institute (BARI), Rahmatpur, Barishal from January 2011 to February 2023. He has successfully completed 10 national and international collaborative projects. Currently, he is working on integrated pest management of betel vine, betel nut, coconut, hog plum and mung bean regarding safe crop production. He was also involved bio-rational pest management of vegetables and spices crops grown on floating garden. Recently, he has recorded new pest of betel nut in Bangladesh which was inflorescence caterpillar, Thirathaba rufivena. He has authored of 19 research articles, 05 booklets, 10 factsheet which is related to insect pest management. Dr. Rahman already has developed more than 12 pest management technologies.
EDUCATION
Academic qualification: B.Sc. (Ag) and MS (Entomology), Bangladesh Agricultural University, Mumnesingh; Ph.D. in Applied Entomology, Andong National University, Korea.
RESEARCH, TEACHING, or OTHER INTERESTS
Agricultural and Biological Sciences, Insect Science
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Md Mahbubur Rahman, Tofayel Ahamed, Md Arifur Rahman Khan, Md Nuruzzaman, Md Rashedul Islam, Md Akhtaruzzaman Sarkar, and Nirmal Kumar Dutta
Elsevier BV
M. R. Islam and N. K. Dutta
Informatics Publishing Limited
The hog-plum, locally known as amra, is a deciduous perennial tree with thick succulent leaves and it grows all over the country, but the quality fruits are produced only in the southern districts of Bangladesh especially in Barishal and Jhalokathi districts. Its cultivation is seriously hampered by hog- hog plum beetle or 14 spotted leaf beetle, <em>Podontia</em> 14-<em>punctata</em> L. (Chrysomelidae: Coleoptera). In most of the cases, insecticidal spray is not effective for controlling this pest as pupation occurs in the soil. Therefore current study was carried out in both laboratory and field condition to develop environment friendly management approaches against hog plum beetle as well as producing of toxic chemical pesticide free hog-plum. From laboratory test, it is revealed that spraying of spinosad (Success 2.5 SC) at hog plum leaflet and drenching with microbial pesticides, soil recharge namely Lycomax (<em>Metarhizium anisopliae</em> +<em> Trichoderma harzianum</em> + <em>Beauveria bassiana</em> + <em>Trichoderma viride</em>) causes 72.22% adults and 51.85% pupal mortality of <em>P.</em> 14-<em>punctata</em> respectively. Then some pest management modules were developed based on the laboratory result and it’s were verified in field during two fruiting season 2018-19 and 2019-20. From field study it is observed that module 1: Hand picking + trunk banding with packaging tape + soil drenching with lycomax + spraying of spinosad treated trees offered lowest leaf and fruit infestation; even though trunk banding with packaging tape did not show any effect to control this pest. Fruit yield was also increased 39.04-39.66% in module 1 imposing hog plum trees compare to control. Therefore, it is clear that without banding of the hog plum trunk, hand picking + soil drenching with microbial pesticides, lycomax + spraying of spinosad might be sustainable and environment friendly pest management module against <em>P.</em> 14-<em>punctata</em>.
Md Mahbubur Rahman, Eunmok Kim, Dongmok Kim, Mohammad MH Bhuyain, and Un Taek Lim
Wiley
BACKGROUND
An aggregation pheromone trap has been used for both monitoring and mass-capture of Riptortus pedestris (Fabricius) in soybean. As the trap's efficacy in reducing the pest population and crop damage is unknown, we evaluated it in small experimental soybean plots using both a before/after and with/without design, and also verified our findings in commercial soybean fields.
RESULTS
In experimental plots, total numbers of R. pedestris on plants in the soybean plots were not affected by the trap installation until mid-August. Interestingly, the abundance of adult bugs increased (4.9-9.4 times higher) in September and October. However, compared with the counted bug population in soybean plots, the trap catch rate was low during the autumn period. In commercial fields, trap installation also did not reduce bug population from the field. Placement of traps in plots increased pod and seed damage by 2.7 and 2.2 times, respectively compared with the controls in experimental plots, although no such effect was observed in commercial fields.
CONCLUSION
Aggregation pheromone traps did not reduce R. pedestris populations in the field or soybean damage, and even led to an increase in the bug population during autumn. Therefore, traps should not be used as a control measure. © 2018 Society of Chemical Industry.
M Mahbubur Rahman, Eunmok Kim, and Un Taek Lim
Oxford University Press (OUP)
Abstract Two unexplained phenomena are found in Riptortus pedestris (Fabricius) (Hemiptera: Alydidae): the first is that it tends to enter reproductive diapause much earlier in the season and to occur on host plants until late fall before finding hibernation site. The second is that they emerge in early spring when primary food sources such as leguminous plants are unavailable. To understand these phenological trends, the reproductive seasonality of both field-collected and laboratory-reared R. pedestris were compared under conditions of with/without food or access to mates. Females collected in spring or fall produced very few eggs in laboratory. But, when food sources were provided, all the bugs produced more eggs. Eggs also hatched normally except those produced by the females collected in fall. This indicates that females collected in the spring were already mated while those collected in the fall were not, most likely because they were in reproductive diapause. Similarly, when food was provided, all laboratory-reared bugs produced eggs, regardless of diapause status, with longer preoviposition period in diapausing bugs which might be due to the termination of reproductive diapause, but only eggs from mated females hatched. In conclusion, while spring reproduction (oviposition and egg hatch) of R. pedestris can occur in the presence of food resources, any lack of food can be limiting factor impeding these activities. In fall, reproduction is greatly reduced even when food resources are available, and under these conditions failure of females to become mated, due to reproductive diapause, is likely the limiting factor.
M. Mahbubur Rahman and Un Taek Lim
Springer Science and Business Media LLC
M. Mahbubur Rahman and Un Taek Lim
Public Library of Science (PLoS)
Riptortus pedestris (Fabricius) and Halyomorpha halys (Stål) cause injury to soybeans by piercing and sucking pods and seeds. Growers believe that new damage decreases near to harvest despite the occurrence of these bugs at that time. As this question has never been assessed, we evaluated two diets: a) mature soybean pods (dried shell + dried soybean seeds) and b) dried soybean seeds for the two bugs by assessing their biological, behavioral, and morphological attributes on each diet in laboratory. While nymphs of both species were able to develop and adults able to reproduce on the tested diets, bugs fed on pods had longer development times and 2.2 to 5.0 times higher mortality rates than bugs fed on seeds. Furthermore, adult longevity of R. pedestris and H. halys fed on pods was 8.4 and 7.5 days shorter, respectively, than that of bugs fed on seeds. However, pod feeding had no effect on adult fecundity or egg viability. In a behavioral choice test, adult R. pedestris preferred seeds over pods and probed seeds longer than pods. On average, adult H. halys also preferred seeds over pods, although 15.6% of H. halys showed the reverse, preferring pods over seeds. The proboscis length and estimated depth of stylet penetration into the host tissue of both nymphs and adults of both species was much greater than the thickness of the pod shell, suggesting that mouthpart structure does not explain the negative effects of pods vs. seeds. In conclusion, mature soybean pods were found to be a suitable food source for both R. pedestris and H. halys despite some negative effects, and thus careful attention should be paid to the population levels of these two bugs approaching harvest to reduce economic damage in soybean.
M. Mahbubur Rahman and Un Taek Lim
Oxford University Press (OUP)
Abstract Riptortus pedestris (Fabricius) (Hemiptera: Alydidae) enters reproductive diapause under short-day length (< 13.5 h) conditions. As an apparent increase of field populations of R. pedestris has been observed during the fall when aggregation pheromone traps are placed in soybean fields, we tested the hypothesis that R. pedestris becomes more responsive to the aggregation pheromone during fall as it enters its reproductive diapause. The response of R. pedestris females—either ones collected seasonally from fields or reared in the laboratory under short-day length (10:14 [L:D] h) conditions—to the aggregation pheromone was examined using a Y-tube olfactometer. Riptortus pedestris collected in fall showed a higher response to the aggregation pheromone (74–80%) than those collected in July (40%). Females in which diapause was induced in the laboratory also showed a higher response to the pheromone than those not in diapause. In a wind tunnel assay, female bugs in laboratory-induced diapause also responded positively to the aggregation pheromone. In addition, we assessed the reproduction of females to verify their diapausing status. Diapausing females never mated with either short- or long-day-reared males, nor did they reproduce, but non-diapausing females mated with short-day-reared males at a rate of 13%. Females collected from fields during fall never mated. In a soybean field evaluation, the number of adult female R. pedestris was higher in the presence of an aggregation pheromone trap than in the absence of one. This is the first confirmation of higher response to the aggregation pheromone of both field-collected and laboratory-reared R. pedestris in reproductive diapause.