Question

The highly successful "Cotton + Pigeonpea" intercropping system prevalent in the Deccan Plateau is biologically advantageous because?

A Both crops fix atmospheric nitrogen
B Pigeonpea acts as a physical barrier to bollworm flight
C Cotton is a C4 and Pigeonpea is a C3 plant, minimizing competition
D Pigeonpea suppresses the parasitic weed Striga in cotton
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