Question

To get higher seed yield in berseem, the crop should be sprayed 

A Two sprays of 2% urea at weekly interval, starting from flower initiation
B Two sprays of 2% Potassium nitrate at weekly interval, starting from flower initiation.
C Two sprays of 7.5 g of Salicylic acid using 100 litres of water per acre.
D Either B or C
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