Results of the long-term field experiment IOSDV Jable at the beginning of the 21st century

Abstract

The impact of organic fertilization and the level of mineral nitrogen fertilization on organic nitrogen and humus balance was studied in a long-term field experiment IOSDV Jable in central Slovenia (sub-Alpine climate, average annual precipitations 1345 mm, average annual temperature 9.58C, heavy hydromorphic silty loam, umbric Planosols). During the period 1993-2010, precipitation increased significantly at an average rate of 19 mm a 71 ; over the same period, average annual temperature increased by 0.0258C (l.f.). The increase in annual precipitation had a negative impact on the yield of all crops (maize, wheat and oats). Increases in mineral N rate led to increased yields. At the highest mineral nitrogen rate, farmyard manure (FYM) did not have a positive impact on yield in the investigated crops, although there was a positive effect of straw incorporation on the yield of maize and oats, and a negative impact on the yield of winter wheat. The organic carbon (Corg) level in the soil increased for all treatments, including FYM or straw and mineral N fertilization. The N content in the soil decreased in the treatment with no organic fertilization and no mineral N, and in the treatment with straw and no mineral N. Corg was increased in treatments with organic fertilization and the highest N rates and remained the same in treatments with moderate N fertilization. All C balances were negative.

Effect of long-term fertiliser regimes and weather on spring barley yields in sandy soil in North-East Germany

“…Similar to the observations of other authors (Tajnšek et al 2013;Yang et al 2015;Wei et al 2016), we also found that yield was influenced by both the fertilisation regime (NPK, fym2, NPK+fym1, NPK+fym2, and NPK+straw) and the MN application rate (25, 50, 75, 100 and 125 kg) during the experimental period. The average yield over the years increased with increasing MN.…”

The impact of wheat production on the occurrence of mycotoxins DON (deoxynivalenol) and ZEA (zearalenone) on wheat grains (Triticum aestivum L.)

“…Depending on the texture of the soil, the average annual rainfall is often too high (1343 mm a -1 , with an upward trend; Tajnšek et al, 2013) to ensure crops of wheat that are stable and of good quality, and the temperature is suitable (9.5 ºC a -1 ). Given the long-term average rainfall and temperature, the climate conditions for the production of high-quality wheat at Jable, the fluctuations of precipitation between different years are higher than in those regions of the world where the most favourable conditions for the production of wheat exist.…”

Effects of Organic Amendments on Soil Aggregate Stability and Microbial Biomass in a Long-Term Fertilization Experiment (IOSDV)

“…IOSDV experiments were set up in 15 different locations in 8 countries following the same principles [45]. Publications on IOSDV experiments mainly concerned changes in crop yields and soil organic matter content [44,[46][47][48], but there are a number of articles which deal with aggregate stability [49,50] or soil microbial biomass [51].…”