Investigation of Different Herbicides on Weed Infestation and Yield Performance of Transplant Binadhan-14 (Oryza sativa L.) in Bangladesh

Md. Shahidul Islam,Md. Monjurul Islam,Md. Habibur Rahman,Sakina Khanam,Md. Shahidul Haque Bir,Le Thi Hien,Kee Woong Park 한국잡초학회·한국잔디학회 2020 Weed & Turfgrass Science Vol.9 No.3

This study was carried out at the agronomy farm of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, Bangladesh, between November 2015 and May 2016, to investigate the weed control on rice growth and yield performance of transplant Binadhan-14 (boro rice). Six selected herbicides (H₁: bensulfuron methyl 4% + acetachlor 14% 18 wettable powder [WP] 500 g·ha<SUP>-1</SUP>, H₂: pyrazosulfuron-ethyl 10 WP 125 g·ha<SUP>-1</SUP>, H₃: metsulfuron-methyl 20 water dispersible granule [WDG] 50 g·ha<SUP>-1</SUP>, H₄: pretilachlor 500 emulsifiable concentrate [EC] 1 L·ha<SUP>-1</SUP>, H5: 2, 4 D amine 480 soluble liquid [SL] 1.8 L·ha<SUP>-1</SUP>, H6: butachlor 5 granule [G] 25 kg·ha<SUP>-1</SUP>) were tested along with two hand weedings. Weed density, fresh and dry weight of weeds were taken from eight weed species (Echinochloa colonum, Paspalums crobiculatum, Monochoria vaginalis, Leersia hexandra, Scirpus mucronatus, Digitaria sanguinalis, Cyperus rotundus and Eclipta alba Hassk) belonging to five families were found to grow in the experimental plots. Among the weed control treatments highest grain yield (5.00 T·ha<SUP>-1</SUP>) was obtained with the treatment pretilachlor 500 EC 1 L·ha<SUP>-1</SUP> followed by two hand weedings (4.97 T·ha<SUP>-1</SUP>). It was observed that yield was increased due to application of herbicide contributed mainly from increasing the yield contributing characteristics of rice like, number of total tillers and effective tillers per plant, filled grains per panicle and 1000-seed weight (g). Maximum benefit- cost ratio with pretilachlor 500 EC 1 L·ha<SUP>-1</SUP> suggested that this herbicidal treatment can be used for effective in controlling weeds as an alternative when labor was crisis in producing for better yield of transplant Binadhan-14 (Oryza sativa) rice cultivar.

Antidiabetic Effect of Korean Traditional Baechu (Chinese Cabbage) Kimchi in a Type 2 Diabetes Model of Rats

Md. Shahidul Islam,Haymie Choi 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.2

The present study was conducted to examine the antidiabetic effects of two dietary dosages (0.5% and 2.0%) of freeze-dried Korean traditional Baechu (Chinese cabbage) kimchi in a high-fat (HF) diet-fed, streptozotocin (STZ)-induced type 2 diabetes (T2D) rat model. Five-week-old male Sprague-Dawley rats were fed HF diet for 2 weeks and then randomly divided into four groups of eight animals: normal control (NC), diabetic control (DBC), kimchi low (KML) (0.5%), and kimchi high (KMH) (2.0%) groups. Diabetes was induced by an intraperitoneal injection of STZ (40 mg/kg of body weight) in all groups except the NC group. After 4 weeks of feeding of experimental diets, serum insulin concentrations and Homeostatic Model Assessment pancreatic beta-cell function were increased and blood glycated hemoglobin was decreased in the kimchi-fed groups compared to the DBC group, while a significant (P < .05) difference was observed only in the KMH group for serum insulin concentration. Lower fasting blood glucose and better glucose tolerance were observed in the KMH group compared to the DBC and KML groups; however, differences were not significant. Food intake, body weight gain, Homeostatic Model Assessment insulin resistance index, and serum lipid profiles were not significantly influenced by kimchi-containing diets. Data of this study suggest that dietary Baechu kimchi has some antidiabetic effects even when fed with a HF-containing diet. Better results are possible if it is consumed with normal or low-fat rather than HF-containing diet.

Effects of Xylitol as a Sugar Substitute on Diabetes-Related Parameters in Nondiabetic Rats

Md. Shahidul Islam 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.5

The present study was examined the effects of xylitol feeding on diabetes-associated parameters in nondiabetic rats. Seven-week-old male Sprague–Dawley rats were randomly divided into three groups: control (five rats), sucrose (six rats), and xylitol (six rats). Animal had free access to a commercial rat pellet diet, and ad libitum water, 10% sucrose solution, and 10% xylitol solution were supplied to the control, sucrose, and xylitol groups, respectively. After 3 weeks of feeding of experimental diets, food intakes were significantly (P<.05) lower in the sucrose and xylitol groups compared with the control group. Drink intake was significantly higher in the sucrose group but significantly lower in the xylitol group compared with the control group. Body weight gain was significantly lower in the xylitol group compared with the sucrose group. Weekly nonfasting blood glucose was significantly increased, but fasting blood glucose was significantly decreased, in the sucrose group compared with the control and xylitol groups. Significantly better glucose tolerance was observed in the xylitol group compared with the control and sucrose groups. Serum insulin and fructosamine concentrations were not significantly influenced by the feeding of xylitol or sucrose. Relative liver weight and liver glycogen were significantly increased in the xylitol group compared with the sucrose group, whereas no difference was observed between the xylitol and control groups. Serum total cholesterol and low-density lipoprotein-cholesterol were significantly decreased in the sucrose and xylitol groups, and serum triglyceride of the xylitol group, but not the sucrose group, was significantly increased compared with the control group. Data of this study suggest that xylitol can be a better sweetener than sucrose to maintain diabetes-related parameters at a physiologically safer and stable condition.

Antidiabetic Effect of Korean Traditional Baechu (Chinese Cabbage) Kimchi in a Type 2 Diabetes Model of Rats

Islam, Md. Shahidul,Choi, Hay-Mie The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.2

The present study was conducted to examine the antidiabetic effects of two dietary dosages (0.5% and 2.0%) of freeze-dried Korean traditional Baechu (Chinese cabbage) kimchi in a high-fat (HF) diet-fed, streptozotocin (STZ)-induced type 2 diabetes (T2D) rat model. Five-week-old male Sprague-Dawley rats were fed HF diet for 2 weeks and then randomly divided into four groups of eight animals: normal control (NC), diabetic control (DBC), kimchi low (KML) (0.5%), and kimchi high (KMH) (2.0%) groups. Diabetes was induced by an intraperitoneal injection of STZ (40 mg/kg of body weight) in all groups except the NC group. After 4 weeks of feeding of experimental diets, serum insulin concentrations and Homeostatic Model Assessment pancreatic beta-cell function were increased and blood glycated hemoglobin was decreased in the kimchi-fed groups compared to the DBC group, while a significant (P < .05) difference was observed only in the KMH group for serum insulin concentration. Lower fasting blood glucose and better glucose tolerance were observed in the KMH group compared to the DBC and KML groups; however, differences were not significant. Food intake, body weight gain, Homeostatic Model Assessment insulin resistance index, and serum lipid profiles were not significantly influenced by kimchi-containing diets. Data of this study suggest that dietary Baechu kimchi has some antidiabetic effects even when fed with a HF-containing diet. Better results are possible if it is consumed with normal or low-fat rather than HF-containing diet.

Xylitol Increases Serum Triglyceride in Normal but Not in a Type 2 Diabetes Model of Rats

Md. Shahidul Islam 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.8

Xylitol is widely used as a sugar substitute not only by people who are overweight or obese or who have diabetes and metabolic syndrome but also is used in numerous foods and food products. Recently, we reported in the Journal of Medicinal Food that xylitol significantly ameliorates most of the diabetes-related parameters in nondiabetic rats.1However, the concentration of serum triglycerides was significantly increased in xylitol-fed rats compared with rat chow- and sucrose-fed rats.1In another previous study, Otto et al.2 reported that the postprandial serum triglyceride level was significantly increased in a xylitol formula-consuming group compared with a fiber-free formula-consuming group of healthy human subjects. Chandramohan et al.3 investigated the effects of 3-hydroxymethylxylitol in a streptozotocin-induced model of rats; although they mentioned that 3-hydroxymethylxylitol significantly decreased serum triglycerides with other lipids,the data for triglycerides were not presented in their article. A significantly higher level of serum triglycerides has also been found after feeding xylitol to healthy dairy cows.4Similar results have also been observed after the infusion of xylitol in healthy human volunteers in a very old study.5In a recent study, Amo et al.6 reported that feeding of xylitol at 1 g/100 kcal of energy did not have any significant effect, but xylitol at 2 g/100 kcal significantly decreased the plasma triglyceride level in high-fat diet-fed rats, which are very similar to type 2 diabetic rats. In a most recent investigation, we have found that although the serum total cholesterol and low-density lipoproteincholesterol levels were significantly decreased, the serum high-density lipoprotein-cholesterol and serum triglyceride concentrations were not affected at all by ad libitum feeding of 10% xylitol solution in a type 2 diabetes model of rats. Hence, the results of the above-mentioned studies and our recent findings suggest that the effects of xylitol on serum lipids may not be similar between normal and diabetic conditions.

Color Removal from Dyeing Effluent using Activated Carbons Produced from Various Indigenous Biomass

Md. Shahidul Islam,Ajoy Kumar Das,In Kyo Kim,Jeong Hyun Yeum 한국염색가공학회 2010 韓國染色加工學會誌 Vol.22 No.2

Comparative Effects of Dietary Ginger (Zingiber officinale) and Garlic (Allium sativum) Investigated in a Type 2 Diabetes Model of Rats

Md. Shahidul Islam,최혜미 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.1

To compare the anti-diabetic effects of dietary ginger and garlic, 5-week-old male Sprague-Dawley rats werefed a high-fat (HF) diet (22% fat) for 2 weeks and then randomly divided into six groups of eight animals: Normal Control(NC), Diabetic Control (DBC), Ginger Low (GNL), Ginger High (GNH), Garlic Low (GRL), and Garlic High (GRH) groups.“Low” and “High” indicate addition of 0.5% and 2.0% freeze-dried ginger or garlic powder in their respective diets. Diabeteswas induced by an intraperitoneal injection of streptozotocin (40 mg/kg of body weight) in all groups except the NC group.After 4 weeks of feeding of experimental diets, food intake was significantly (P. .05) higher in the GRL group comparedto the GRH group. Serum insulin concentrations were significantly higher in the NC and GNH groups compared to the DBC,GNL, and GRL groups, while no significant difference was observed for the GRH group. Better glucose tolerance was ob-served in the GNH group compared to the DBC and all other ginger- and garlic-fed groups. Final body weight, fasting bloodglucose, blood glycated hemoglobin, liver weight, liver glycogen levels, and serum lipid profiles were not influenced by theginger- or garlic-containing diet. Data of this study suggest that ginger and garlic are insulinotropic rather than hypoglycemicwhile overall anti-diabetic effects of ginger are better than those of garlic, at least in this experimental condition. Much bet-ter anti-diabetic effects of ginger and garlic may be obtained when feeding is with a normal rather than a HF-containing diet.

Corrosion of Steel Rebar in Concrete: A Review

( Akib Jabed¸ Md Mahamud Hasan Tusher ),( Md. Shahidul Islam Shuvo ),( Alisan Imam ) 한국부식방식학회 2023 Corrosion Science and Technology Vol.22 No.4

Rebar is embedded in concrete to create reinforced concrete (RC). Rebar carries most of the tensile stress and gives compressively loaded concrete fracture resistance. However, embedded steel corrosion is a significant cause of concern for RC composite structures worldwide. It is one of the biggest threats to concrete structures' longevity. Due to environmental factors, concrete decays and reinforced concrete buildings fail. The type and surface arrangement of the rebar, the cement used in the mortar, the dosing frequency of the concrete, its penetrability, gaps and cracks, humidity, and, most importantly, pollutants and aggressive species all affect rebar corrosion. Either carbonation or chlorides typically cause steel corrosion in concrete. Carbonation occurs when carbon dioxide in the atmosphere combines with calcium within the concrete. This indicates that the pH of the medium is falling, and the steel rebar is corroding. When chlorides pass through concrete to steel, corrosion rates skyrocket. Consideration must be given to concrete moisture. Owing to its excellent resistance, dry concrete has a low steel corrosion rate, whereas extremely wet concrete has a low rate owing to delayed O2 transfer to steel surfaces. This paper examines rebar corrosion causes and mechanisms and describes corrosion evaluation and mitigation methods.

Knowledge-based Nitrogen Application: A Boon in Nitrogen Use Efficiency in Rice Systems in Bangladesh

Mohammad Saiful Islam Bhuiyan,Md. Mizanur Rahman,Jalal Uddin Shoaib,Md. Shahidul Islam 한국토양비료학회 2020 한국토양비료학회 학술발표회 초록집 Vol.2020 No.10

Effect of Crop Establishment and Weed Control Method on Productivity of Transplanted aman Rice

Mohammad Ali,Md. Shahidul Haque Bir,Md. Habibur Rahman,Sultana Kaniz Ayesha,Aminul Hoque,Md. Harun-Ar-Rashid,Md. Rashidul Islam,박기웅 한국잔디학회 2018 Weed & Turfgrass Science Vol.7 No.2

This experiment was conducted to find the most suitable crop establishment method and weed management practices for transplanted aman rice in Bangladesh. Rice variety Bangladesh Rice Research Institute (BRRI) dhan44 was used as planting materials where three crop establishment methods (T1: direct wet seeding by drum seeder; T2: hand broadcasting; T3: transplanting) and four weeding options (W1: Hand weeding (HW); W2: BRRI weeder+HW; W3: Herbicide+HW; and W4: no weeding) were tested. Among the crop establishment methods, the highest grain yield (5.12 t ha-1) was obtained with the T3, while the highest benefit cost ratio (BCR) of 2.08 was found in T2. In case of the weed management method, W1 showed superior results on the plant density/m2 (139.66) at 60 days after transplanting (DAT), grain yield (4.97 t ha-1), and BCR (2.03). On the other hand, the highest plant dry matter (36.20 g) at 60 DAT and the highest yield (6.10 t ha-1) were obtained in a T3W1 combination. The results of this study show that the productivity of rice during aman season could be most significantly increased with the use of transplanting (T3) alone, hand weeding (W1) alone, or a combination of the two methods (T3W1).