TY - UNPB ID - orgprints4341 UR - http://orgprints.org/4341/ A1 - Fischer, Meike A1 - Raupp, Joachim A1 - Mäder, Paul A1 - Dubois, David A1 - Römheld, Volker TI - Micronutrient status in two long-term trials with fertilisation treatments and different cropping systems Y1 - 2005/// N2 - Although organic fertilisers always contain micronutrients, we have to pay attention to the question of whether continuous fertilisation will lead to lower contents in plants or lower availability in the long run. We investigated topsoil samples from long-term trials with farmyard manure and mineral fertili-sation and with different organic and conventional farming systems. Input of micronutrients via or-ganic fertilisers was obviously more significant in the case of poor sandy soil than in that of loamy soil with high total contents and higher mineralising potential. AV - public KW - Manganese KW - copper KW - zinc KW - farmyard manure KW - mineral fertiliser KW - conventional farming KW - organic farming KW - Bodenfruchtbarkeit KW - DOK ER -