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The accelerated population growth of Bangladesh has triggered the need for increased food production. To meet the demand of food for increasing population Bangladesh has no other alternative to increase its crop production per unit area, which is a great challenge. Bangladesh has acute shortage of food legumes. The major food legumes generally called pulses are grown during winter months out of which...
Predictions from different studies reveal that the agricultural sector will face the acute challenges due to climate change. Models have shown that due to such changes, the rainy season will be wetter due to increased rainfall and dry season will be drier due to higher temperatures. This will cause more surface water bodies to dry out making less water available for irrigating crops in dry season...
Achieving higher yield of rice depends on increasing total biomass. Total crop biomass is determined mainly by crop photosynthesis and respiration losses, both of which are sensitive to temperature. Global mean surface air temperature is increased by about 0.6°C in the twentieth century. Over the twenty-first century a range of 1.1–2.9°C warming is predicted in a scenario with low emissions of greenhouse...
Rubber plantations on degraded forest lands are expanding worldwide due to economic, social and environmental perspectives. The study was conducted to evaluate the temporal effects of rubber plantations on soil carbon (C) sequestration in the north-eastern Indian state of Tripura. Composite soil samples were randomly collected at 0–15 (surface) and 15–30 cm (sub-surface) depths from 0 (control), 5,...
Climatic factors especially temperature and relative humidity are the key factors influencing development of any insect pest and disease of rice. CO2 is the key factor for global climate change, resulting increase in temperature. The intergovernmental panel on climate change predicted that with the current emission scenario, global mean temperature would rise between 0.9°C and 3.5°C by the year 2100...
As a consequence of future climate change, agriculture is likely to be affected, which would also lead to risk of hunger and water resource scarcity with enhanced climate variability. Currently, the estimated population of Bangladesh stands at over 143.4 million and is likely to be 214.6 million in 2050. To keep pace with population growth and shrinking land resource base, the food production needs...
Geographically, Bangladesh is highly vulnerable to climate change. In particular, impacts of climate variability on agriculture and consequences on other sectors are already evident in the drought prone High Barind Tract and coastal regions. The agriculture and fisheries sectors in the High Barind Tract (HBT) and southern coastal region are very likely to face significant yield reduction in the future...
The abundance of major sugarcane insect pests like top shoot borer, stem borer and rootstock borer were investigated for the last 28 years from 1980 to 2007 at Ishurdi, Pabna. The incidence of these major insect pests occurs in the months of March to October. The abundance of top shoot borer, Scirpophaga excerptalis Walker, was positively correlated with rainfall (r = 0.448*) in the month of June,...
The crop production situation in Bangladesh is becoming worse due to a range of soil, water and climate related constraints. Global warming and climate change phenomena exacerbate this situation. Declining soil fertility, accelerated soil erosion and soil salinity are the major soil related constraints to crop production. About 0.87 million hectares (Mha) of land is affected by different degrees of...
Effects of climate change regarding food chain contamination are well-pronounced. Prevalence of environmental contaminants and chemical residues in food chain is one of them. To address such climate change effects sustainable public and environmental health are the prime concerns. Due to be of flood-plain physiography, Bangladesh is more vulnerable to the effects which can be intensified by regional...
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