Reply on RC1

Published: Nov. 2, 2023

Abstract. Soil structure is sensitive to intensive soil management. It can be ameliorated by a reduction in cultivation and stimulation of plant microbial mediators for aggregate formation, latter prerequisite measure quality. Cover crops (CC) are part an integrated approach stabilize or improve Thereby, the incorporation diverse CC mixtures hypothesized increase positive effects applications. This study entailed investigation legacy effect on aggregates after three crop rotations second main (winter wheat) last treatment. Four CCs (mustard, phacelia, clover, oat) cultivated pure stands fallow treatment were compared mixture four species (Mix4) highly 12 (Mix12) long-term field experiment Germany. The organic carbon (OC) distribution within macroaggregate fractions (16–8, 8–4, 4–2, 2–1 < 1 mm) their stability measured dry wet sieving methods, mean weight diameter (MWD) was calculated from water-stable aggregates. results showed that fallow, all increased MWD between 10 19 % under following crop. average over slightly higher (16 %) than single (12 %). Higher improvement at 20–30 cm depth also indicates additional benefits depth. Structural equation modelling (SEM) suggests more likely OC storage small macroaggregates mm, while largest fraction (8–16 mm). Different individual exhibited varying involvement formation different fractions. We provide evidence litter quality, root morphology rhizosphere input, which affect might reasons observed differences treatments. valuable multifunctional tools sustainable Here, we they contribute amelioration arable soils. Increasing functional diversity could strategy further enhance agroecosystems.

Language: Английский

Reply on RC2

Published: Nov. 2, 2023

Abstract. Soil structure is sensitive to intensive soil management. It can be ameliorated by a reduction in cultivation and stimulation of plant microbial mediators for aggregate formation, latter prerequisite measure quality. Cover crops (CC) are part an integrated approach stabilize or improve Thereby, the incorporation diverse CC mixtures hypothesized increase positive effects applications. This study entailed investigation legacy effect on aggregates after three crop rotations second main (winter wheat) last treatment. Four CCs (mustard, phacelia, clover, oat) cultivated pure stands fallow treatment were compared mixture four species (Mix4) highly 12 (Mix12) long-term field experiment Germany. The organic carbon (OC) distribution within macroaggregate fractions (16–8, 8–4, 4–2, 2–1 < 1 mm) their stability measured dry wet sieving methods, mean weight diameter (MWD) was calculated from water-stable aggregates. results showed that fallow, all increased MWD between 10 19 % under following crop. average over slightly higher (16 %) than single (12 %). Higher improvement at 20–30 cm depth also indicates additional benefits depth. Structural equation modelling (SEM) suggests more likely OC storage small macroaggregates mm, while largest fraction (8–16 mm). Different individual exhibited varying involvement formation different fractions. We provide evidence litter quality, root morphology rhizosphere input, which affect might reasons observed differences treatments. valuable multifunctional tools sustainable Here, we they contribute amelioration arable soils. Increasing functional diversity could strategy further enhance agroecosystems.

Language: Английский