Estimation of loss due to post harvest diseases of potato in markets of different districts in Bangladesh

The storage diseases of potato at Mymensingh, Rajshahi and Dhaka town were surveyed to estimate the loss in potato due to storage diseases. In Mymensingh district, the survey revealed that 3.95, 0.91 and 0.69% of tubers were affected with soft rot, dry rot and scab, respectively. Among the cultivars, maximum loss within the three months namely July, August and September were found in cultivar Cardinal (5.55%), where losses were caused by soft rot (3.97%), dry rot (0.88%) and scab (0.70%). In Rajshahi district, the survey revealed that 3.73, 0.99 and 0.85% of tubers were affected with soft rot, dry rot and scab, respectively. Among the cultivars, maximum loss within the three months were found in Cardinal (5.55%) having soft rot (3.58%), dry rot (1.06%) and scab (0.96%). In Dhaka district, the survey revealed that 3.27, 0.96 and 0.81% of tubers were affected with soft rot and dry rot. Among the cultivars, maximum loss within the three months was found in Diamant (5.55%) due to soft rot (2.49%), dry rot (1.05%) and scab (0.97%). Loss estimated in potato was 5.84, 5.54 and 5.25%, respectively in the months of July, August and September at Mymensingh district. Similarly, in Rajshahi district, it was 5.85, 5.58 and 5.28%, respectively in the month of July, August and September. Again in Dhaka district, it was 5.58, 4.96 and 4.55%, respectively in the months of July, August and September. The study revealed the fact that potatoes were subjected to different diseases in the markets of Bangladesh.Key words: Potato, storage diseases, months, loss, Bangladesh

How changes in human activities during the lockdown impacted air quality parameters: A review

The health emergency linked to the spread of COVID-19 has led to important reduction in industrial and logistics activities, as well as to a drastic changes in citizens' behaviors and habits. The restrictions on working activities, journeys and relationships imposed by the lockdown have had important consequences, including for environmental quality. This review aims to provide a structured and critical evaluation of the recent scientific bibliography that analyzed and described the impact of lockdown on human activities and on air quality. The results indicate an important effect of the lockdown during the first few months of 2020 on air pollution levels, compared to previous periods. The concentrations of particulate matter, nitrogen dioxide, sulfur dioxide and carbon monoxide have decreased. Tropospheric ozone, on the other hand, has significantly increased. These results are important indicators that can become decision drivers for future policies and strategies in industrial and logistics activities (including the mobility sector) aimed at their environmental sustainability. The scenario imposed by COVID-19 has supported the understanding of the link between the reduction of polluting emissions and the state of air quality and will be able to support strategic choices for the future sustainable growth of the industrial and logistics sector