Which of the following is not a component of Panchgavya? 

Organic farming is not a new concept in India, it has been practised since ancient times. It is a farming system that uses organic wastes (crop, animal and farm wastes, aquatic wastes) and other biological materials, along with beneficial microbes (biofertilizers), to release nutrients to crops for increased sustainable production in an eco-friendly, pollution-free environment. With the increase in population, we would be compelled not only to stabilise agricultural production, but also to increase it in a sustainable manner. Scientists have recognised that the 'Green Revolution,' with its high input use, has reached a plateau and is now being sustained with a diminishing return of falling dividends. Thus, a natural balance must be maintained at all costs in order for life and property to exist.