Shifting cultivation is an http://www.answers.com/topic/agriculture system in which plots of land are cultivated temporarily, then abandoned.
it depeds on how much you grow, but a lot
It is not recommended. Multi blend oils are intended for larger engines to keep lubricant flowing while the engine warms up. In a car engine the oil will heat up at approximately the same rate that...
One source for information on jhum cultivators can be found in the attached URL
dirt