Nagpur: The fastest growing plant species bamboo recently became the talking point in the town as the nation observed world bamboo day. One person consumes 280 kg oxygen per year and one clump of bamboo generates 360 kg oxygen per year. To mark the day Maharashtra bamboo Development Board (MBDB) and Rotary Club of Nagpur Elite jointly organised a discussion session and workshop in the Forest hall here on September 18. Thus, it gives 40 kg oxygen to the environment. Maharashtra has bamboo varieties like katang, manga, manvel, thorny and chivari..