The CLA Cymru warning follows a Welsh Assembly environment and sustainability committee Stage 1 scrutiny of the Bill which was published last week.
The association, which represents more than 3,500 landowners, farmers and rural businesses across Wales, says it is supportive of the Bill’s objective but not of rushing through legislation that is not fit for purpose.
“The management of natural resources at a landscape scale is critical to the long-term health of the countryside and the rural economy in Wales,” says CLA Cymru director, Rebecca Williams.
“Legislation to achieve this shared ambition must, however, be more soundly tested otherwise the Bill could end up as an expensive and cumbersome reporting exercise both for Government and for land managers.
“Further work is required to consider how this legislation will fit with existing Assembly, Westminster and EU legislation, and to ensure that the intended environmental benefits will be achieved when the legislation is delivered on the ground.
“The committee’s report makes more than 50 recommendations, some questioning the objectives of the Bill, which demonstrates just how much work is still needed for this legislation to be passed and applied successfully.
“Natural Resources Wales is not even due to report on its trials for introducing the Bill’s requirements until March 2016 at the earliest,” she added.
“The sensible approach is to examine what is learned from these trials before enshrining the approach into law.”