DOI: 10.5593/SGEM2016/B32/S13.023


F. Chetan, T. Rusu, I. Porumb, M. Coman, P.I. Moraru
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-62-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 2, 173-184 pp

The degradation of soil natural fetility through the practice of monocultural hoes in the classic tillage system (breast plough tilling with turning over the soil) and the usage of the high doses of chemical fertilizers need the appeal to certain alternative soil tillage systems that aim at the conservation and improvement of the soil fertilization without diminishing the yield. The thesis aims at doing research on the formation of soybean nodulation. Also, it aims at doing some research on the influence of the soil tillage system upon the yield and upon certain morphoproductive elements, namely at establishinng certain correlations between the number of nodozities and some morphological characters of the yield. In the formation of the average soybean yield during the three experimental years, we can conclude that soybean responds favorably to the minimum tillage system, leading to superior yields, as compared to the classic system, whereas in both soil tillage systems the suplimentary fertilization does not have a major contribution in the formation of the number of nodozities. Soil humidity up to a depth of 0-50 cm have a major contribution in the formation of the number of nodozities. In the years when the soil humidity in the months of March-July registered the highest values, leading to the formation of most soybean nodozities, namely in the year 2013 in classic soil tillage system (392 m3/ha and 103 nodozities) and in the year 2014 in the minimum tillage system (410 m3/ha and 103 nodozities).

Keywords: soil tillage system, soybean, fertilization, formation of nodulation, yield.

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