Happy Balarama’s Appearance Day!
Balarama represents plowing the land for agriculture and therefore always carries in His hand a plow, whereas Krishna tends cows and therefore carries a flute in His hand. Thus the two brothers represent krishi-rakshya and go-rakshya. (Bhag. 10.5.20, purport)
Krishna and Balarama taught us by Their personal behavior. Krishna took care of the cows and played His flute, and Balarama took care of agricultural activities with a plow in His hand. (Bhag. 10.11.37, purport)