Sugarcane is one of the major important sugar yielding crops in Bangladesh.As an exhaustive crop,sugarcane removes a huge amount of plant nutrients from the soil.However,the combined use of organic and inorganic ferti...Sugarcane is one of the major important sugar yielding crops in Bangladesh.As an exhaustive crop,sugarcane removes a huge amount of plant nutrients from the soil.However,the combined use of organic and inorganic fertilizers can be a good approach to deal with nutrient depletion and promote sustainable crop production as well as improve soil health.Therefore,an attempt was made to identify the most fruitful and profitable integrated nutrient management on the aspects of growth,yield and quality of sugarcane in two consecutive growing seasons.Seven treatments:T_(1)=Control,T_(2)=165:55:120:30:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(3)=Poultry Litter(PL)at 5 t ha^(−1)+95:51:87:9:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(4)=Cow Dung(CD)at 15 t ha^(−1)+36:52:60:17:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(5)=Press Mud(PM)at 15 t ha^(−1)+10:50:43:0:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(6)=Mustard Oil Cake(MOC)at 0.5 t ha^(−1)+140:54:115:25:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)and T_(7)=GM(Green Manure)at 5 t ha^(−1)+140:53:100:28:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)were used in this experiment.Two years data showed that treatment T_(3)produced the maximum amount of tillers,total dry matter yield,millable sugarcane,cane yield and sugar yield,followed by the T_(4)treatment.The highest stalk heights were recorded in the T_(3)treatment,which was statistically similar to all other treatments except T_(1)and T_(2).The juice quality parameters viz.,brix and pol in cane were found significant in treatment T_(3)while the highest purity was obtained in the T_(7)treatment.All the data of Jaggery(goor)quality parameters,the highest sucrose content,color transmittance,Jaggery(goor)recovery and the lowest ash content of Jaggery(goor)were observed in the T_(3)treatment,which was statistically similar to the T_(4)treatment in both seasons.The highest cost of production was obtained from the T_(6)treatment while the highest gross return,net return and BCR were recorded in the T_(3)treatment.No significant changes were found in one cycle of sugarcane in initial and post-harvest soil characteristics viz.,pH,organic carbon,total N,and available P,K and S contents due to integrated use of different fertilizer packages.From the experimental findings,it was concluded that treatment T_(3)followed by T_(4)treatment would be the better productive and profitable integrated nutrient management technology for ensuring higher yields and quality of sugarcane without soil fertility degradation in the High Ganges River Floodplain soils.展开更多
Objective:To observe the effectiveness of most widely used antibiotic,oxytetracycline(OTC)in reducing the bacterial load in rohu fish under artificial culture condition in the laboratory.Methods:The experiment was con...Objective:To observe the effectiveness of most widely used antibiotic,oxytetracycline(OTC)in reducing the bacterial load in rohu fish under artificial culture condition in the laboratory.Methods:The experiment was conducted in the Faculty Fisheries,Bangladesh Agricultural University,Mymensingh-2202.The fish were reared in 8 aquaria where fish in 5 aquaria were used for replication of the treatment(experimental group)and fish in remaining 3 aquaria were considered as a control(Control group).OTC was fed to the fish in the experimental aquarium at the rate of 2 g/kg through diet twice daily whereas fish reared under control condition was given feed without antibiotic for 20 d and bacterial content in the aquarium water,gills,skin and intestine of fish were estimated at every alternative day after onset of the experiment.Results:Rearing the fish with OTC treated feed resulted in gradual decrease of bacterial load in the aquarium water,gills,intestine and skin of the fish whereas the content remain unchanged Or little increased in the control group.W ater quality parameters such as dissolved oxygen,pH and total hardness were within the suitable range in the experimental aquarium but not in control aquaria throughout the experimental period.Conclusions:These results suggest that OTC could be a potential antibiotic to reduce the bacterial load in fish and can be used commercially for maintaining the fish health in aquarium conditions.展开更多
Objective:To optimize the dose of 3 commonly used growth promoters,viz.,Nuricell-Aqua(composition:glucomannan complex and mannose polymer),Hepaprotect-Aqua(composition:β-glucan,mannose polymer and essential oil)and R...Objective:To optimize the dose of 3 commonly used growth promoters,viz.,Nuricell-Aqua(composition:glucomannan complex and mannose polymer),Hepaprotect-Aqua(composition:β-glucan,mannose polymer and essential oil)and Rapid-Grow(composition:organic acid and their salt,β-glucan,mannose oligosaccharide and essential oil),using Thai pangas(Pangasiandon hypophthalmus)as cultured species.Methods:Thai pangas fingerlings with an average length and weight of 11 cm and 10 g were reared under laboratory condition and growth promoters were fed after incorporating them with a test diet at a ratio of 10%of their body weight for a period of 28 d.Estimation of data on growth such as weight gain(g),specific growth rate,survivability(%)test in each aquarium were conducted and data were analyzed using statistical software.Results:After 28 d of feeding with Nutricell-Aqua,10 mg/(20 g feed·day),which was the dose recommended by the manufacturer,was found better.When Hepaprotect-Aqua and Rapid-Grow were employed,performance was found to be better with the dose of 60 mg/(20 g feed·day)which was 1.5 times higher than the dose recommended by the corresponding manufacturer.Conclusions:These results suggest that chemicals and feed additives marketed in Bangladesh Fish Feed Market need further testing under Bangladesh climatic condition before being marketed.展开更多
基金This research was funded by the Bangladesh Sugar crop Research Institute(BSRI),Ishwardi,Pabna,Bangladesh and the Taif University Researchers Supporting Project No.TURSP-2020/142,Taif University,Taif,Saudi Arabia.
文摘Sugarcane is one of the major important sugar yielding crops in Bangladesh.As an exhaustive crop,sugarcane removes a huge amount of plant nutrients from the soil.However,the combined use of organic and inorganic fertilizers can be a good approach to deal with nutrient depletion and promote sustainable crop production as well as improve soil health.Therefore,an attempt was made to identify the most fruitful and profitable integrated nutrient management on the aspects of growth,yield and quality of sugarcane in two consecutive growing seasons.Seven treatments:T_(1)=Control,T_(2)=165:55:120:30:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(3)=Poultry Litter(PL)at 5 t ha^(−1)+95:51:87:9:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(4)=Cow Dung(CD)at 15 t ha^(−1)+36:52:60:17:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(5)=Press Mud(PM)at 15 t ha^(−1)+10:50:43:0:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1),T_(6)=Mustard Oil Cake(MOC)at 0.5 t ha^(−1)+140:54:115:25:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)and T_(7)=GM(Green Manure)at 5 t ha^(−1)+140:53:100:28:10:2.5:4 kg N:P:K:S:Mg:Zn:B ha^(−1)were used in this experiment.Two years data showed that treatment T_(3)produced the maximum amount of tillers,total dry matter yield,millable sugarcane,cane yield and sugar yield,followed by the T_(4)treatment.The highest stalk heights were recorded in the T_(3)treatment,which was statistically similar to all other treatments except T_(1)and T_(2).The juice quality parameters viz.,brix and pol in cane were found significant in treatment T_(3)while the highest purity was obtained in the T_(7)treatment.All the data of Jaggery(goor)quality parameters,the highest sucrose content,color transmittance,Jaggery(goor)recovery and the lowest ash content of Jaggery(goor)were observed in the T_(3)treatment,which was statistically similar to the T_(4)treatment in both seasons.The highest cost of production was obtained from the T_(6)treatment while the highest gross return,net return and BCR were recorded in the T_(3)treatment.No significant changes were found in one cycle of sugarcane in initial and post-harvest soil characteristics viz.,pH,organic carbon,total N,and available P,K and S contents due to integrated use of different fertilizer packages.From the experimental findings,it was concluded that treatment T_(3)followed by T_(4)treatment would be the better productive and profitable integrated nutrient management technology for ensuring higher yields and quality of sugarcane without soil fertility degradation in the High Ganges River Floodplain soils.
基金Supported in part by Bangladesh Fisheries Research Institute(BFRI).
文摘Objective:To observe the effectiveness of most widely used antibiotic,oxytetracycline(OTC)in reducing the bacterial load in rohu fish under artificial culture condition in the laboratory.Methods:The experiment was conducted in the Faculty Fisheries,Bangladesh Agricultural University,Mymensingh-2202.The fish were reared in 8 aquaria where fish in 5 aquaria were used for replication of the treatment(experimental group)and fish in remaining 3 aquaria were considered as a control(Control group).OTC was fed to the fish in the experimental aquarium at the rate of 2 g/kg through diet twice daily whereas fish reared under control condition was given feed without antibiotic for 20 d and bacterial content in the aquarium water,gills,skin and intestine of fish were estimated at every alternative day after onset of the experiment.Results:Rearing the fish with OTC treated feed resulted in gradual decrease of bacterial load in the aquarium water,gills,intestine and skin of the fish whereas the content remain unchanged Or little increased in the control group.W ater quality parameters such as dissolved oxygen,pH and total hardness were within the suitable range in the experimental aquarium but not in control aquaria throughout the experimental period.Conclusions:These results suggest that OTC could be a potential antibiotic to reduce the bacterial load in fish and can be used commercially for maintaining the fish health in aquarium conditions.
基金Supported by Bangladesh Fisheries Research Institute with Grant No:BFRI/ARP/10/3161(4).
文摘Objective:To optimize the dose of 3 commonly used growth promoters,viz.,Nuricell-Aqua(composition:glucomannan complex and mannose polymer),Hepaprotect-Aqua(composition:β-glucan,mannose polymer and essential oil)and Rapid-Grow(composition:organic acid and their salt,β-glucan,mannose oligosaccharide and essential oil),using Thai pangas(Pangasiandon hypophthalmus)as cultured species.Methods:Thai pangas fingerlings with an average length and weight of 11 cm and 10 g were reared under laboratory condition and growth promoters were fed after incorporating them with a test diet at a ratio of 10%of their body weight for a period of 28 d.Estimation of data on growth such as weight gain(g),specific growth rate,survivability(%)test in each aquarium were conducted and data were analyzed using statistical software.Results:After 28 d of feeding with Nutricell-Aqua,10 mg/(20 g feed·day),which was the dose recommended by the manufacturer,was found better.When Hepaprotect-Aqua and Rapid-Grow were employed,performance was found to be better with the dose of 60 mg/(20 g feed·day)which was 1.5 times higher than the dose recommended by the corresponding manufacturer.Conclusions:These results suggest that chemicals and feed additives marketed in Bangladesh Fish Feed Market need further testing under Bangladesh climatic condition before being marketed.
