That is something one can hardly see without knowing mind of others. As far as seen, no. Maybe some mixed, being taught by monks (as usual), plants to cut does not matter for no-Bhikkhus. In how far the merit maker might have been aware of animals in the soil, and in this case (4 month no rain), very, very less, is another. As for the young man, as well the young girl, Nyom can be sure that pure white kamma was long time present. But may Nyom ask them personally to be more sure.
As for Sila, to self-honest check, if later remorse arises, the are some factors helpful when right used. Intention/acceptance to kill, object much be (perceived) as alive, one puts an effort and acts (by word/sign or body), the being finds death on it. If a factor misses, there is no break. As for kamma it incl. mind where only intention or acceptance is enought for the kamma of killing.
So how many factors are sure for Nyom Danilo here?
As for the involvement of Bhante... my person did not observed, not a fan of risky liking to assist. Usually monks are taught, by certain commentaries, to be not so shy in this regard. Maybe Nyom
Cheav Villa can ask Bhante
Indannano personally, that there is Upasaka
Danilo from Brazil, who thinks the act of merits (planting bamboo, and assist) was dark kamma, and possible the assistance of Bhante a break of precepts.
Again: So how many factors are sure for Nyom Danilo here?
But much importand here, and even since a longer such could be the case (maybe used to "over-critical" and perfection outward seeking), Nyom would make a lot of bad kamma (best black and white, if on "fighue out for a good) because he might focuses on finding faults and leaves out oppotunities, since some time still, to use share of merits (first) for rejoice on it (what can be perceived as such, at least verbal), to giving always the good parts first line. That would help him more, or to train speech to relativat issues, at least (so not to, maybe "hurt" unrightly). May Nyom investigate that deeply, and keep in mind that if discreditate improper a Noble fellow, that such block his own further walk on as well, as urge to such "good mind keeping).
Maybe he likes to take part here a little as well, some a little guided and documented at the
Ashram Thmo Duk , since very practical on topic here. Maybe Atma can give a talk on it as well the next days.