4
Question
Which of the following is/are the advantage of fish culture in combination with a rice crop?
Which of the following is/are the advantage of fish culture in combination with a rice crop?
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Solution
The correct options are
A Reduce the use of fertilisers and pesticides.
B High yield is obtained.
C Reduces deleterious effects on fish and predation.
D Reduces stem borers on paddy.
∙ Inorganic fertilisers and pesticides cannot be metabolised by the organisms and as a result accumulate in the body of aquatic animals.
∙ Other animals feeds on them it further get transferred and leads to the deleterious effect on both aquatic animals and animals predating on them.
∙ The fishes are grown along with the crops they add certain organic material in the water which further promotes the growth of the crop. As a result high yield is obtained.
∙ It also reduce the diseases in the plants such as stem borers on paddy as they are eaten up by fishes.
A Reduce the use of fertilisers and pesticides.
B High yield is obtained.
C Reduces deleterious effects on fish and predation.
D Reduces stem borers on paddy.
∙ Inorganic fertilisers and pesticides cannot be metabolised by the organisms and as a result accumulate in the body of aquatic animals.
∙ Other animals feeds on them it further get transferred and leads to the deleterious effect on both aquatic animals and animals predating on them.
∙ The fishes are grown along with the crops they add certain organic material in the water which further promotes the growth of the crop. As a result high yield is obtained.
∙ It also reduce the diseases in the plants such as stem borers on paddy as they are eaten up by fishes.
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