This is my course assignment of Evolutionary Ecology of Stockholm University,Sweden in the year of 2009.

Abstract

Specialization character of phytophagous insects is one of the key examples of insect-plant relationship. Host specificity of insect is required for their larval development. Several factors like trade-off, characteristics of host plant, insect’s neural system are responsible to an insect for becoming a specialist. Though specialization character of phytophagy increase the vulnerability towards extinction, still insect tense to be specialist for protecting themselves from natural enemies, getting the microclimate facility and boost up the survival rate of their offspring.

Today, people from all over the world are insufficiently aware about their daily food consumption. Most like to eat organic food and reduce GM (Genetically Modified) crops. So farmers of both modern and developing countries are trying to produce organic crops. But at this time there are lots of pests and insects which decrease the yield of crops and losses total yields.

For this reason farmers are interested in cultivating their crops under Integrated Pest Management and other control management systems. If they want to produce crops without the help of synthetic insecticides, they can use organic pesticides such as neem (Azadirachta indica) plant extract.

This is one of my undergraduate assignment under department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.

Abstract

At present, biodiesel can play vital role in the transport sector all over the world. Biodiesel refers to a diesel-equivalent processed fuel derived from biological sources; especially plant species such as oil seed rape, jatropha, sunflower, soybean etc. I will discuss some prospective uses of biodiesel use in different vehicles.


History of Biodiesel