Age of crop,seasonal phenomena,effect of environment,cultural and manurial treatments and influence of parent stock are some of the more important factors that affect flowering in sugarcane.Age of shoot and arrowing are posi- tively correlated(6).Ratooning,is known to induce more arrowing(5).Increased done of nitrogenous manures have a bearing on arrowing,water-logging in the field is one (3)and the photo-period or the amount of light received by the cane clumps during their growth periods in another (1).For instance,in a trial laid out at the Sugarcane Breeding Station,Coimbatore,a majority of cane clumps receiving extra light were reported to have failed to flower.In an experiment with Co 421 at the Sugarcane Research Station,Anakapalle,during three successive years (1940-41 to 1942-43)arrowing in individual cane clumps was studied with reference to number of canes in each clump and the results of this study are presented in this paper.
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