Einfluss der Bodenbearbeitung zur Saat auf Ertragsbildung,udN-Aufnahme und Nmin-Vorrat im Boden beiudRispenhirse (Panicum miliaceum L.) nachudWinterzwischenfrucht Erbse (Pisum sativum L.)

摘要

After mulching of winter pea on 1st of May 2007 for green manuring four differentudvarieties of millet were sown without any tillage directly into the mulch cover or afterudtillage by a rotary harrow on a brown earth (Cambisol) near Dresden, Germany. Dueudto deterioration of soil structure through the impact of rain after tillage seedudemergence, plant height and grain yield of millet were reduced in tilled compared to noudtilled plots. Although the content of mineral N in the soil was much higher after rotaryudharrowing nitrogen use efficiency of millet was significantly higher when growingudwithout any tillage. This effect could be caused by a higher ratio of NH4-N to totaludmineral N in the soil which can be an advantage for plant growth with respect to theudenergy demand for nitrogen assimilation.