A trial to determine the lime requirement for reseeded grassland on a peaty hill soil

Abstract

Lime was applied in summer 1981 at rates up to 20 t ha-I prior to reseeding an unimproved peaty hill soil. A marked pH gradient with depth developed showing that 3 years after application lime had very little effect below a depth of 5 cm. Soil pH values for 0-7.5 cm samples were: nil lime -4.2; 1 t ha-' -pH 4.3; 2 t ha-' -pH 4.6; 4 t ha-' -pH 5.0; 6 t ha-' -pH 5.6. In the 0-2.5 cm layer pH values were much higher.In all years at least 80% of maximum yield was achieved from an initial application of 2 t ha-' lime. Botanical analysis showed that maximum persistence of sown species, perennial ryegrass and timothy, occurred from 2 t ha-' lime; 6 t ha-' lime was necessary for maximum persistence ofclover. Lime application had only small effects on the mineral composition of the herbage.

Effects of liming on void space and aggregation in an upland grassland soil

“…Changes in the Ah horizon were less marked and only the treatment effect was statistically significant ( pb0.01). The perturbation to the soil chemistry induced by the surface liming treatment was therefore mainly seen in the organic H horizon and almost undetectable in the mineral Ah, a similar finding to previous investigations in uncultivated acid soils (Dampney, 1985).…”

“…The work was carried out under the UK Natural Environment Research Council's Thematic Programme on Soil Biodiversity and Ecosystem Function which aimed to achieve an understanding of the biological diversity of soil biota and the functional roles played by soil organisms in key ecological processes. The increase in nutrient cycling following liming of acid soils has been well documented (e.g., Floate et al, 1981;Hopkins et al, 1990), although in uncultivated soils, effects on soil chemistry are often limited to the uppermost horizons (Dampney, 1985). Liming also promotes earthworm activity (Springett and Syers, 1984), which may, in turn, affect void space and aggregation.…”

Composted Oyster Shell as Lime Fertilizer Is More Effective Than Fresh Oyster Shell

“…18,19) Agricultural liming materials increase soil pH, and thereby affect the activity and composition of microbial populations. 20) It has also been found that Ca fertilizers decrease the mobility and consequently also plant availability of Cd, Fe, Mn, and Zn through pH alteration.…”

Effect of Winter Crop Cultivation on Soil Organic Carbon and Physico-chemical Properties Under Different Rice-forage Cropping Systems in Paddy Soil

“…(Lee et al, 2009;2012). Table 4와 같이, 토 (Dampney, 1985;Tang et al, 2003). 또한 토양 pH의 증가는 microbial biomass 및 효소활성을 촉진시키고, 이는 토양 중 질소 및 인 유효도가 향상될 수 있다 (Cookson, 1999;Tate, 2000;Lee et al, 2008).…”