Why did government of Karnataka banned plantting og eucalyptus trees
Answers
First,before knowing why these plants are banned..we have to know what is allopathy..
Allelopathy is the chemical inhibition of one plant (or other organism) by another, due to the release into the environment of substances acting as germination or growth inhibitors.
Plants like,Eucalyptus show allelopathy and nutrient depletion from soil faster than other slow growing plants.The reason is eucalyptus bis efficient biomass producer, it can produce more biomass than many other tree species. It also consumes less water per unit biomass produced than many other species of trees; but as a result of its fast growth and high biomass production Eucalyptus species consume more water than other, less productive species. Growing Eucalyptus in low rainfall areas may cause adverse environmental impacts due to competition for water with other species and an increased incidence of allelopathy.Same reason goes for Acacia also. Another reason can be the susceptibility of those plants to certain plant diseases that causes outbreak that particular disease to othe neighbouring plants.Termite attacks are common in the Region. Susceptibility to this pest varies with the species. Some species such as E. camaldulensis and E. tereticornis are more susceptible than others.
Corticium salmonocolor "Pink disease" is significant for some species in high rainfall areas in the Asia-Pacific Region.
To avoid these environmental hazards passively caused by these plants ,they are banned in some areas.I know one such example that Karnataka govt. Banned plantation of Eucalyptus.