Environmental stipulations may be helpful to environmental protection but are nonetheless secondary to the importance of creating long-term stability for investment in soil health. As you know, the longer you expect to rent land and the more stable your financial resources, the more you will invest in the soil.
In Ontario, it is still uncommon for leases to include stipulations of any kind, (83% of both oral and written agreements have no stipulations) but if both parties are comfortable with their inclusion in a legal written lease, it can create a shared responsibility for the health of the land and also for the environment. Start with a conversation and then bring the results of your discussion to a lawyer for further input and potential incorporation into the lease. It is important to stipulate the practice and not the result, because you know that often times the results are dependent on weather and other factors.
Environmental stipulations could include: