Changes in the penetration resistance of the soil were recorded during the 1997 vegetation period in a long-term soil tillage experiment set up in 1994 with favourable nutrient supply levels. The soil of the growing site was a rust-brown forest soil of moderate potential, with a shallow fertile layer and moderate supplies of nutrients. The present paper evaluates the effects of five soil tillage variants on soil resistance. Variance analysis between the treatments indicated that in all the treatments differences arising from tillage effects could only be observed in the 0-40 cm layer. The application of direct drilling and disking over a number of years resulted in significantly higher soil resistance values than ploughed treatments or those combined with loosening. The resistance of the compact layer in early spring had an influence on the values measured later. In the disked treatment the soil resistance of 4.7 Mpa recorded under the cultivated layer rose to 8.4 Mpa in August, while the increase measured in the ploughing+loosening treatment was only 1.5 Mpa. The compacted layer was only observed to thicken to a slight extent during the vegetation period, while the horizontal spread of soil resistance was found to increase. The resistance of the compacted layer formed due to soil tillage showed the following increasing order in the upper 40 cm layer: 1. At the beginning of vegetation: Loosening+ploughing < Loosening+disking < Ploughing < Direct drilling < Disking. 2. In the middle of vegetation: Loosening+ploughing < Loosening+disking < Ploughing < Direct drilling < Disking. 3. At the end of vegetation: Loosening+ploughing < Ploughing < Direct drilling < Loosening+disking < Disking. The results of soil resistance measurements confirmed previous observations indicating that disking had the worst effect on the soil structure; in this treatment the soil was least able to resist degradation processes.
|Translated title of the contribution||Studies on penetration resistance in a long-term soil tillage experiment on brown forest soil in Gödöllo|
|Number of pages||14|
|Publication status||Published - Apr 1998|
ASJC Scopus subject areas
- Agronomy and Crop Science