Water‐stable aggregates and organic matter pools in a calcareous vineyard soil under four soil‐surface management systems

摘要: . Vineyards in Champagne, France are generally situated on slopes where the soils subject to erosion. Therefore it is important find a soil-surface management practice that protects soil against water We assessed potential of mulches or grass covers stabilize aggregates calcareous sandy loam from vineyard Champagne after 9 years under different systems. Four treatments were studied: (i) bluegrass (Poa pratensis) surface cover between vine rows (GC) with bare vines (R); two organic (ii) coniferous (CB) (iii) poplar (PB) bark covered entire surface, and (iv) as control. The amendments applied every 3 at rates 61 67 t ha−1 for PB CB treatments, respectively. kinetics disaggregation fitted power law (A=K t−D), which K was fraction water-stable >200 μm remaining 1 hour wet-sieving. In 0–5 cm layer, aggregate stability greater GC (K=21.7), (K=15.2) (K=13.6) than control (K=10.5) R (K=11.8). 0–20 also stabilized (K=14.0–15.0); but did not. Structural more strongly related total carbon (R2=0.64, P <0.001) microbial biomass (R2=0.54, P<0.001). A enhanced structural layers (K=14.2), probably because intense root development rhizodeposition enhancing microbially produced metabolites, such carbohydrates. Establishing applying mulch effective agricultural practices improve thus should reduce vegetative growth amended less compared soil; however, no difference wine quality observed among treatments.