ISSN:
1573-5036
Keywords:
L. cosentinii
;
nutrient recycling
;
potassium
;
subterranean clover
;
wheat
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The influence of pasture species and pasture/crop rotations on the fate of K fertilizer in the soil profile of a sandplain soil was investigated. Results for Lupinus cosentinii, subterranean clover and a subterranean clover/wheat rotation are presented. Potassium was applied as KCl at six rates up to 150 kg K ha-1 for three years; bicarbonate-extractable K was measured at five depths in the profile (0–100 cm) for four years. The net change in available K in the top 100 cm of the profile (kg ha-1) was calculated. There was a gradual increase in K down the profile under all species with fertilizer application. The increase was largest for L. cosentinii, which also appeared to redistribute K from below 100 cm to the soil surface. The K residual value on this soil type was higher than expected with most of the fertilizer applied over three years being retained in the top 100 cm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00025069
Permalink
