This is a good question. Before I answer it, I want to discuss a meta point. You are wondering in regards to this verse from Bhagavad Gita that what are other interpretations of this text? Now, in this modern age, every person can publish their own commentary and make a following based on zillion number of schools. However, if you really want to understand and apply the verse in your life. Then, we have to follow what Krishna says in chapter 4 in regards to understanding Gita. He mentions that this system of knowledge is accessed and understood through authorized sampradaya (disciplic succession). So inorder to understand various interpretations on Bhagavad Gita, we should look to Vaishnava acharyas and their commentaries. This would be supremely beneficial for the reader.
In the present day, the most prominent preacher was HDG A.C. Bhaktivedanta Swami Prabhupada. His Bhagavad Gita is loved by millions. He writes:
The Lord can be satisﬁed by sacriﬁces; therefore, one who cannot perform them will ﬁnd himself in scarcity – that is the law of nature. Yajña, speciﬁcally the saṅkīrtana-yajña prescribed for this age, must therefore be performed to save us at least from scarcity of food supply.
So the Yajna implies sacrifice. In different ages (Satya, Dwapara etc.), the sacrifices are prescribed for the time, place and circumstance. In the current age of Kali, the yajna recommended is Sankirtana - Yajna or congregational chanting of the holy names of Lord Krishna. (Srimad Bhagavatam 11.5.32).
Another reference is Ch 114 of 5th canto of Padma Purana which recommends the Yajna of chanting the holy names in the Kali yuga.
Krishna's words are not only authoritative but scientific. So I offer any reader an experiment. For a week, please chant for half hour daily and see the wonderful results in your life. Best if you can do with family or friends. :)