The effect of soil tillage systems on the carbon balance, its sources and dry-matter production | Vplyv spracovania pôdy na bilanciu uhlíka, jeho zdroje a produkciu sušiny
2011
Žák, Š., Centrum výskumu rastlinnej výroby, Piešťany (Slovak Republic) | Hrčková, K. | Dvončová, D. | Hašana, R. | Beluský, J. | Gavurníková, S.
Carbon balance was positive for both systems. There was statistically significantly higher level of organic matter in soil in integrated system than in low-input system (by 1.626 t per ha C, i.e. 326.5%). Also the other characteristics had higher values in integrated farming system - carbon sources (QJ by 48.1% (1.626 t per ha C) and carbon from plant residues (Q) by 34.5% (by 0.887 t per ha C). Both differences between IS and LIS were highly statistically significant. Dry-matter production was higher in low-input system (by 9.4%) and the difference was highly signicicant. Year had highly significant influence to all of the studied attributes. In the point of view of fertilization we found out the significantly higher values of carbon balance, sources of carbon and carbon from plants residues at the level of fertilization N2 in comparison with N1. The difference in dry-matter production was statistically highly significant. According to the plot the dry-matter production ranged from 10.66 t per ha (I. plot) to 12.06 t per ha (IV. plot) in low-input system and from 9.54 t per ha (I. plot) to 10.92 t per ha (III. plot) in integrated system. The differences were highly statistically significant. We interpreted the differences in the dry-matter production by the dissimilar weather conditions during the individual years and their different influence on the crops. During the period of crop rotation there was at average 69.1% of carbon from plant residues, 22.1% from compost, 8.8% from the green manuring in integrated farming system. In low-input system there was at average 76.1% of carbon from plant residues, 16.5% from compost and 7.4% from manure.
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