Mineral carbonation of silicate mineral regulated atmospheric CO2 on geological time scales of carbon hang. Mines and spread on the surface of the rapid deterioration silicates such as olivine, was proposed to accelerate this natural CO2 sequestration (improved weatherability). While agriculture can provide an existing infrastructure, the rate and effects on soil weathering and plants are largely unknown. Our goals were in the ground and assess their effects on plant growth and nutrient absorption weathering of olivine. in pot experiment with ryegrass (Lolium perenne L.), for 32 weeks of alteration was the bioavailability of magnesium (Mg) in soil and plants refer to. olivine doses corresponded in 1630 (olive) 8150, 40700 and 204000 (OLIV4) kg ha-1. alternatively, the kieserite soluble Mg salt was used as growth reference plants. Olivine increased (15.6%) and investment K concentration ( + 16.5%) in OLIV4. all increased doses olivine bioavailability of Mg and Ni in the soil, as well as the absorption of Mg, Si and Ni in plants. Olivine Ca absorption deleted. estimated alteration of a Mg balance corresponded to 240 kg ha-1 (14.8% of the dose, OLIV1) 2240 kg ha-1 (1.1% OLIV4). This corresponds to CO2 sequestration gross of 290-2690 kg ha-1 (29,103 to 269,103 kg km-2.) Otherwise, similarity estimated weatherproof with Kieserit treatment from 13% to 58% for OLIV1 hands. Olsen model for olivine carbonation predicted 4.0% to 9.0% in our case alteration, whatever the dose of olivine. Our% values were observed at high doses, were smaller than that. For negative comments in the ground Nevertheless weather seems fast enough to support the concept of "aging improved." In agriculture, the olivine doses must remain within the limits of imbalances in plant nutrition to avoid, especially in the low availability Ca; and prevent accumulation of Ni in soil and crops.
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