Pedogenesis and carbon accumulation with cool season grasses under low input regime

For nine years, Maurice Evers of Lumbricus researched carbon sequestration in cool season grasses. Earlier this year, he defended his PhD thesis. This article discusses his observations and conclusions.

By: Guy Oldenkotte

The accumulation of carbon in different soil layers under turf, related to the quantity and quality of biomass formation by a wide spectrum of grass (sub)species and varieties under sustainable management, is relatively unstudied. Moderate carbon accumulation in the soil has the positive effect on the turf that it is resilient and provides proper cushioning of ball impact, wear resistance and protection against extreme weather conditions. It also provides buffer capacity for water and nutrients in the soil.

However, excessive carbon accumulation in soil actually leads to reduced water infiltration and water permeability of soil. This will result in a shallower root system which, subsequently, will reduce the tolerance of turf to extreme climatic conditions. This can result in problems with diseases and insects in the grass. Ultimately, this can lead to lower turf quality, with, as a result, more limited playability.

Continue reading with a subscription or subscribe