Implementation of the roller chopping for therehabilitation of rangelands with microphyllousscrubland

Resumen

Objective: Was to evaluate the air roller implementation in five sites (rangelands) from July 2013 in order to increase the production of dry matter (DM) and the basal coverage (BC) development of grasslands with microphilic scrub in the Peñón Blanco, Durango.

Design/methodology/approach: The BC was measured at five points of each rangeland with treatment (5) and at the control (1) using the Canfield method. Random forage sampling was conducted during October to estimate the DM production and the ACC for each rangeland. The DM production was analyzed with a completely random block design with 30 replications.

Results: The BC of the grasslands at the sites with the use of the air roller ranged between 23.9 and 26.6%, while in the control it was 3.6%. A significant increase (P ≤ 0.01) of the DM produced in the rangelands treated (787.7 to 876.8 kg ha^-1) compared to the control (120 kg ha^-1). The treated sites reached values in the ACC between 35 and 39 AU ha^-1, except for the control who obtained only 5 AU ha^-1.

Limitations on study/implications: The limitations will be reflected depending on the specific conditions of the site where the study is replicated, since the results are largely linked to factors such as climate and soil.

Findings/conclusions: The implementation of the air roller favored the rehabilitation of the grasslands to increase their forage productivity and, therefore, the cattle feeding in its extensive modality that takes place in the region’s rangelands