Browsing by Author "Razzaque, M.A."

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EFFECT OF RICE HUSK ON ARSENIC ACCUMULATION IN POTATO PLANT UNDER DIFFERENT LEVELS OF ARSENIC TREATED SOIL
(Bangladesh Agron. J., 2022-05) Roy, T.S.; Rahman, M.S.; Mostofa, M.; Nahid., M; Khatun, M.G.; Razzaque, M.A.
A pot experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the period from November, 2020 to May, 2021 to find out the effect of rice husk as an bio-adsorbent to decontaminate As toxicity in potato. The experiment consisted of two factors. Factor A: Arsenic levels (4) viz., As0: control (0 mg As kg-1 soil), As1: 20 mg As kg-1 soil, As2: 40 mg As kg-1 soil, and As3: 60 mg As kg-1 soil. Factor B: Rice husk levels (4) viz., R0: control (0 g kg-1 soil), R1: 20 g kg-1 soil, R2: 40 g kg-1 soil and R3: 60 g kg-1 soil. The experiment was laid out in a factorial randomized complete block design with three replications. Results revealed that As and/or rice husk had significant effect on arsenic load in different plant parts of potato t. Arsenic content in potato tuber flesh, peel, haulm and root gradually increased with the increase of its levels. On the contrary, As content in plant parts decreased with increasing rice husk levels. The soil treated with As1R3 exhibited As accumulation in tuber flesh (0.1070 mg kg -1 fresh weight) and peel (0.443 mg kg -1 FW), respectively. As load in different plant parts was in the sequence: root > haulm > tuber peel > tuber flesh. Although, the least As loading in tuber flesh was observed in As1R1, As1R2, As1R3 (range 0.1258-0.1070 mg kg-1 FW) which also showed higher productivity (range 402.67 - 416.67 g plant-1), but the treatment combination of As1R1 may be suitable for safe potato cultivation in lower level As contaminated soil. Therefore, potato growers can grow potato up to 20 mg As kg-1 contaminated soil treated with 20 g rice husk kg1 soil, which contains safe As load than the critical one (0.157 mg As kg -1 FW) for human consumption. So, application of rice husk for potato cultivation may a good option to reduce the arsenic hazards in lower arsenic endemic areas.
EFFECTS OF SALINITY ON GROWTH, YIELD AND NUTRIENTS CONTENT OF TWO ONION CULTIVARS
(Sher-e-Bangia Agricultural University Research System (SAURES), 2021-07) Razzaque, M.A.; Zamil, S.S.; Hasan, M.M.; Siddika, M.
A pot expcnmcnt wa ... conducted using IWO factors Completely Randomized OC~lsn \\ IIh three replications 31 the net house of the department of Agricultural Chemistry. Sher-c-Bnngta Agricultural Lnll eNt). Dha!-.l dunng October. 2020 - March 2021 to study the effect of five salinuy levels (0. 3. 6. 9 and 12 dSml) un growth, }~c1d and nutrients content 01'1\\,(1 onion culiivars (BARI praz I and UARI pial. 61. Re-ultv of the experiment showed that plant height. leaf number & rn:
YIELD AND QUALITY OF POTATO AS INFLUENCED BY BIOADSORBENT IN ARSENIC TREATED SOIL
(Sher-e-Bangia Agricultural University Research System (SAURES), 2021-07) Roy, T.S.; Rahman, M.S.; Mostafa, M.; Nahid, M.; Razzaque, M.A.
About 3 million hectare land of Bangladesh is covered by groundwater sources for Irrigation and a significant portion of Irrigation water is arsenic (As) contaminated. To produce safe potato under As contarnmated soil. a pot experiment was conducted in the experimental field of Sher-e-Bangia Agncultuml University. Dhaka during the period from November 2020 to Apnl 2021 to find out thc effect of nee husk 3S an bro-adsorbent to decontaminate As toxicity in potato. TIle experiment consisted of two factors. Factor A: Arsenic levels (4) vi:.. ASo:control (0 mg As kg" soil). As,: 20 mg As kg I soil. Asj: 40 mg As kg·1 soil. and Asc 60 mr As kg" soil. Factor B: Rice husk levels (4) viz .• Ro: control (0 g kg I soil), RI: 20 g kg" soil. Rl: 40 g kg' soil and RJ: 60 g kg" soil. TIIC experiment was laid out in a randomized complete block design with three replications. Data were recorded on yield and some quality contributing parameters of potato. Results revealed that As and/or rice husk had significant effect on most of the yield lind quality contributing parameters studied in this experiment. The result revealed that number of tubers plan r1 gradually increased with increasing both As and rice husk levels. On the other hand. mean tuber weight decreased with increasing As level, but in case of rice husk and their combination had no effect this parameter, Yield of potato (g plant') gradually decreased with the increase of As levels while increased with increasing rice husk levels. The maximum yields (runge 399.33- 416.67 g plant I) were obtained from ASoR2• ASoR,. As1RI, AsIRl and As,RJ whereas, the minimum was from As)RJ (350.33 g plant I). Specific gravity and dry matter content of both flesh and peel showed negative trends with increasing As levels in soil. vice- versa results were recorded from rice husk levels. The combined effects of As and rice husk had significant effect on specific gravity, but not on both flesh and peel dry mailer content. The highest specific gravity (1.0749 g ern") was observed from~. Therefore. potato growers can grow potato up to 20 mg As kg" contaminated soil treated with 20 g rice husk kgl soil. which contains safe As load than the critical one (0.157 mg As kg -I FW) for human consumption