International long-term experiment (LTE) 'Organic and Mineral Nitrogen Fertilization Experiment' (IOSDV)|农业施肥数据集|作物产量研究数据集

The long-term experiment (LTE) "International Organic Nitrogen Fertilisation Trial" (IOSDV) Rauischholzhausen (University Gießen) was set up in 1984 as part of an internationalseries of trials which were started simultaneously at about 15 locations in several European countries. The initiator of this series of trials was Eduard von Boguslawski, who also foundedthe international working group "IOSDV". The LTE "IOSDV" in Rauischholzhausen was later continued and managed by Bernd Honermeier (1996 - 2021). The original idea of this LTE was to compare three farming systems (farm types), (1) system without organic fertilisation (simulating a cash crop farm), (2) system with organic fertilisation from livestock (farmyard manure, simulating a farm with livestock) and (3) system with organic fertilisation from plant residues (straw, catch crops and digestate from a biogas plant). In these arable farming systems, the classic cash crops sugar beet (since 2010 silage maize), winter wheat and winter barley are grown in a crop rotation (one after the other in time) and at the same time also next to each other every year. Due to the central importance of nitrogen as a plant nutrient, mineral N fertilisation was included as a test factor and combined with all other test factors in four different dosages so that possible interactions could be investigated. Since the LTE was set up at several locations, the influence of site and climatic conditions on soil properties and plant yields as a function of organic and mineral N fertilisation can also be investigated. The trial was extended in 1997 by a variant with "compost fertilisation" (without and with certified compost), with the same crop rotation and mineral N fertilisation. Land Use Type: Field crops Research Theme: Fertilization LTE Category: Fertilization Farming Category: Conventional Research Parameter: -Plant: total biomass yield, grain yield, harvest index -Soil: Ct, Corg, Nt, nitrate N Factors: - Factor A: Crops (sugar beet/maize, winter wheat, winter barley) - Factor B: N-fertilization (5 levels) - Factor C: Organic fertilization (3 levels) Research question: The trial aims to clarify the long-term effects of different organic fertilisation (manure from livestock compared to organic matter from plants) on soil properties (Ct/Corg, Nt, Nmin) and on biomass yields of maize, winter wheat and winter barley. It should also be clarified whether there is an interaction between organic fertilisation and mineral N fertilisation as well as between fertilisation and site conditions regarding soil parameters and plant yields and whether these factors thus influence each other. Related datasets are listed under Related Identifier. Dataset version 1.0