Principle of Aquaculture (1+1)

Procedures

Physical methods:

controlling aquatic weeds by manually (hand picking) or mechanically using various tools such as sickle, scythes, blades, nets, wooden rakes, cullers, haulers, cranes etc., are used to remove aquatic weeds.

Chemical methods

Different types chemicals with different dosages applied to control aquatic weeds depend on time season and type of infestation. Chemicals have to be sprayed over floating leaves or applied to pond water or soil.

Biological methods

Biological method of weed control is the most efficient and useful method without much expensive. The waste vegetative matter is recycled into proteinacious fish flesh. Various biological agents used are fishes, insects, snails and mammals.