Md. Atiqur Rahman Khokon

Bangladesh Agricultural University

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Shila Chakraborty

Bangladesh Agricultural University

Farzana Haque Tumpa

Ghent University

Yoshiyuki Murata

Okayama University

Yoshimasa Nakamura

Okayama University

Izumi C. Mori

Okayama University

Abdul Wadud

Khulna University of Engineering and Technology

Shintaro Munemasa

Okayama University

Mohammad Anowar Hossain

University of Dhaka

S. S. Das

Bangladesh Agricultural University

Md. Morshedul Islam

Bangladesh Agricultural University

Cooperative Institutions

Bangladesh Agricultural University

Okayama University

Bangladesh Rice Research Institute

Bangabandhu Sheikh Mujibur Rahman Agricultural University

Bangladesh Agricultural Research Institute

Khulna University

Sher-e-Bangla Agricultural University

Bangladesh University of Engineering and Technology

Dhaka Medical College and Hospital

University of Rajshahi

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Efficacy of Trichocompost on the Growth and Yield of Tomato

Universal Journal of Plant Science (2018)

Muhammad Saiful Abedin Md. Ashraful Hoque Md. Atiqur Rahman Khokon I. Hossain

A field experiment was conducted to investigate the efficacy of Trichocompost utilizing Trichoderma as biological agent.Three doses of Trichocompost viz.500g/m 2 , 750g/m 2 , 1000g/m 2 were applied including untreated control treatment.All the yield parameters were significantly higher when they were applied in different doses of Trichocompost.However, growth parameters did not show significant variation although luxuriant and lavish growth was noticed.Best performances were recorded by applying Trichocompost application @1000g/m 2 .Economic analysis of the treatments indicates that Trichocompost is profitable for farmers.Benefit Cost Ratio (BCR) was maximum (2.26) in Trichocompost treated plot @1000g/m 2 .It can be revealed that Trichocompost can be applied in the field for better tomato production.

Production cost

10.13189/ujps.2018.060201

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Citations (3)

Phylogenetic analyses and pathogenic diversity of Meloidogyne graminicola of rice (cv. BRRI Dhan28) from different agro-ecological zones of Bangladesh

Journal of King Saud University - Science (2024)

Nargis Akhter Mohammad Tofazzal Hossain Howlader Md. Atiqur Rahman Khokon

10.1016/j.jksus.2024.103472

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Pathogenic variability of Colletotrichum sp. from chilli anthracnose and their tolerance to carbendazim

Journal of the Bangladesh Agricultural University (2018)

Muhtarima Jannat Farzana Haque Tumpa Md. Rashidul Islam Md. Atiqur Rahman Khokon

Twelve isolates of Colletotrichum capsici and Colletotrichum gloeosporides were isolated from anthracnose infected chilli fruits from different areas of Mymensingh. Isolated pure fungal isolates were grouped on the basis of their morphological characters viz. colony color and compactness, size, shape and number of conidia. The white colored isolates were identified as C. capsici and showed faster growth on PDA medium. In contrast, grey colored fungal isolates were identified as C. gloeosporides and comparatively slow growth on PDA medium. All the fungal isolates were pathogenically active and developed typical symptoms on both green and ripe fruits of chilli. The isolates of C. capsici collected from Kalibari showed the highest infection (74.99%) on fruit surface followed by Muktijoddhar bazar (61.83%). Differential tolerance was observed as fungal growth was different against 0.05% and 0.1% carbendazim while 0.2% carbendazim was lethal against all fungal isolates. The results indicate that severity of anthracnose of chilli is different may be due to aggressiveness of fungal and their tolerance against common fungicide like carbendazim. J.Bangladesh Agril. Univ. 16(3): 417–423, December 2018

Colletotrichum capsici

Colletotrichum

10.3329/jbau.v16i3.39411

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Evaluation of pathogenic variability of Bipolaris sorokinianaat different growth stages causing leaf blight of wheat

A. Z. M. Salehuddin Farzana Haque Tumpa Afrin Sultana Sunanda Chakraborty Md. Atiqur Rahman Khokon

Bipolaris

10.47310/iarjals.2020.v01i06.005

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Validation of Inoculation test and Screening for Resistance Sources of Mustard-Rapeseed Cultivars in Bangladesh Against Alternaria brassicicola

Current Agriculture Research Journal (2018)

M. A. Hossain Ahsan Habib Mohammad Shafiqul Islam Fatema Tuz Zohura Md. Atiqur Rahman Khokon

Alternaria leaf spot or black leaf spot caused by Alternaria brassicicola is the devastating diseases of mustard-rapeseed in Bangladesh, and can cause yield loss up to 60% every year. A total of 27 cultivars of Brassica spp. where Brassica rapa (13), B. juncea (5) and B. napus (9) were selected for resistance screening against A. brassicicola. Two inoculation methods viz. detached leaf and seedling inoculation were assessed for checking the validation of inoculation technique using cultivated mustard-rapeseed varieties in Bangladesh a method to measure resistance to A. brassicicola. A significant positive correlation between the results of two inoculation methods was found in this study. The detached leaf technique was more suitable due to development of clear symptoms on the leaves within 36 hrs, and suitable for screening large scale genotypes for resistance. The 3rd leaves of 30 day-old were more suitable for inoculation having severe symptoms than the 4th leaves. Among 27 Bangladeshi mustard-rapeseed cultivars all cultivars expressed susceptible reaction to A. brassicicola, except BINA Sharisha-8, as it had border line resistance.

Alternaria brassicicola

10.12944/carj.6.1.02

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Improvement of bacterial wilt tolerance in eggplants by endotrophic mycorrhiza (Glomus mosseae)

Journal of the Bangladesh Agricultural University (2022)

Sadia Afrin Shupta Shila Chakraborty Shimul Akhtar Md. Atiqur Rahman Khokon

Glomus

Bacterial wilt

10.5455/jbau.130804

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Citations (1)

Involvement of extracellular oxidative burst in salicylic acid‐induced stomatal closure in Arabidopsis

Plant Cell & Environment (2010)

Md. Atiqur Rahman Khokon Eiji Okuma Mohammad Anowar Hossain Shintaro Munemasa Misugi Uraji

ABSTRACT Salicylic acid (SA), a ubiquitous phenolic phytohormone, is involved in many plant physiological processes including stomatal movement. We analysed SA‐induced stomatal closure, production of reactive oxygen species (ROS) and nitric oxide (NO), cytosolic calcium ion ([Ca 2+ ] cyt ) oscillations and inward‐rectifying potassium (K + in ) channel activity in Arabidopsis . SA‐induced stomatal closure was inhibited by pre‐treatment with catalase (CAT) and superoxide dismutase (SOD), suggesting the involvement of extracellular ROS. A peroxidase inhibitor, SHAM (salicylhydroxamic acid) completely abolished SA‐induced stomatal closure whereas neither an inhibitor of NADPH oxidase (DPI) nor atrbohD atrbohF mutation impairs SA‐induced stomatal closures. 3,3′‐Diaminobenzidine (DAB) and nitroblue tetrazolium (NBT) stainings demonstrated that SA induced H 2 O 2 and O 2 – production. Guard cell ROS accumulation was significantly increased by SA, but that ROS was suppressed by exogenous CAT, SOD and SHAM. NO scavenger 2‐(4‐carboxyphenyl)‐4,4,5,5‐tetramethylimidazoline‐1‐oxyl‐3‐oxide (cPTIO) suppressed the SA‐induced stomatal closure but did not suppress guard cell ROS accumulation whereas SHAM suppressed SA‐induced NO production. SA failed to induce [Ca 2+ ] cyt oscillations in guard cells whereas K + in channel activity was suppressed by SA. These results indicate that SA induces stomatal closure accompanied with extracellular ROS production mediated by SHAM‐sensitive peroxidase, intracellular ROS accumulation and K + in channel inactivation.

Salicylhydroxamic acid

10.1111/j.1365-3040.2010.02253.x

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Foliar Application of Chitosan and Yeast Elicitor Facilitate Reducing Incidence and Severity of Alternaria Leaf Blight of Tomato and Brinjal

Farzana Haque Tumpa Md. Atiqur Rahman Khokon

Two pot experiments were conducted in the net house to investigate whether aqueous solution of chitosan and yeast elicitor can suppress Alternaria leaf blight of tomato and brinjal. Aqueous solutions of chitosan and yeast elicitor were applied on seeds and on the foliage of tomato and brinjal at three growth stages following 0.02, 0.05, 0.1 and 0.2% concentration respectively. The chitosan and yeast elicitor-treated plants were further inoculated artificially to create sufficient disease pressure to monitor incidence and severity. Differential responses were recorded for chitosan and yeast elicitor considering both growth stages and type of crops. Chitosan performed superior in tomato plants while yeast elicitor in brinjal plants considering both disease incidence and severity. In both cases, 42 DAT was more suitable for chitosan and yeast elicitor spray to get maximum disease suppression. Chitosan and yeast elicitor at 0.2% showed superior performance in reducing blight incidence and severity by Alternaria.

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Effect of mastitis on post-partum conception of cross bred dairy cows in Chittagong district of Bangladesh

Journal of Advanced Veterinary and Animal Research (2017)

Md. Atiqur Rahman Khokon Azizunnesa Azizunnesa Md Islam Kulsum Chowdhury Md. Azizur Rahman

Objective: The study was conducted to investigate the effect of mastitis on post-partum conception in crossed cows (Local x Friesian or Sahiwal x Friesian) in Chittagong area of Bangladesh. Materials and methods: A total of 100 lactating cows were randomly selected from thirteen small and medium size commercial dairy farms. The cows were reared under traditional feeding and management systems. Age and number of parity of the cows were 2.5 to 6 years and 1-5, respectively. On-farm California Mastitis Test (CMT) and Whit Slide Test (WST) were performed with the milk samples to diagnose mastitis. Besides, productive and reproductive data were recorded by examining the animals and interviewing the farmers. Results: The incidence of mastitis was significantly (P=0.037) higher (76% for CMT and 62% for WST) in 3.5-4.5 years old cows and lower (P=0.037) (47% for CMT) in 2.5-3.5 years old cows. The highest percentage of CMT (72%) and WST (59%) positive cases were found in cows having parity number 2. The CMT (71%) and WST (53%) test results were similar in third parity cows. The first parity cows were less prone to mastitis (47%). Mastitis had significantly (P=0.002) negative effect on days required to first heat after parturition. Mastitis was also negatively correlated with calving interval (CI) (P=0.030). More the incidence of mastitis prolongs the calving interval and the highest percentage (85% for CMT and 71% for WST) of mastitis was found in cows having 380-400 days calving interval. Lowest mastitis (54% for CMT and 48% for WST) incidence detected cows lowest calving interval. Significantly, more number of Service per Conception (SPC) was also required in cows having more incidence of mastitis (P=0.03). SPC was 4 for subclinical to clinical cases and 3 for clinical cases. Conclusion: Significant correlation between mastitis and post-partum conception is recorded in this study that may hamper reproductive performances. http://doi.org/10.5455/javar.2017.d203 XML PubReader

Post partum

10.5455/javar.2017.d203

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Detection and quantification of aflatoxins in farmers’ stored rice seeds in some selected areas of Bangladesh

Archives of Phytopathology and Plant Protection (2024)

Afruz Zahan M. Ayub Ali Md. Monjurul Alam Md. Atiqur Rahman Khokon

Detection and quantification of total aflatoxins in farmers' stored rice seeds at different storage intervals in two cropping seasons (Boro 2017–2018: cv. BRRI Dhan28 and cv. BRRI Dhan29 and Aman 2017: cv. BR 11 and cv. BRRI dhan49) was focused in this study. Aflatoxin was quantified in two cropping seasons (Boro and Aman). Blotter incubation test was conducted for fungal prevalence assessment and a one-step lateral flow immune-chromatographic assay was used to quantify the aflatoxins. Seed moisture content ranged from 11.59 to 13.32% and aflatoxin concentrations ranged from 2.41 to 11.12 ppb. Variation in fungal contamination in stored seeds was correlated with seed moisture content. The moisture content in stored rice seeds increased with storage time and was positively correlated with fungal infestation and toxin production. The findings of this study indicate that moisture content of stored rice seeds and storage duration are determining factors for aflatoxin contamination.

Husk

10.1080/03235408.2024.2388328

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