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• The effect of sowing date and plant density of winter oilseed rape (Brassica napus var. napus f. biennis L.) population

  213-215

  Éva Vincze

  Péter Pepó

  Views:

  200

  The experiment has been set up in the University of Debrecen Látókép Experimental Station in three different years (2014, 2015 and 2016), three different plant densities 200, 350 and 500 thousand ha-1, four replications of the same nutrient supply with using a line spacing of 45 cm. In the experiment, the fore crop was winter wheat in each year. The amount of weeds was observed five times in the last experimental year (2016/2017). In the three experimental years, the highest yield was harvested from the early sowing plot with the highest plant density. On the basis of the Pearson’s correlation analysis there was significant negative correlation (r=-0.583) between the effect of the annual year and yield of the hybrid.

• Study of plant physiological parameters in winter oilseed rape (Brassica napus var. napus f. biennis L.) production on chernozem soil

  111-115

  Éva Vincze

  Péter Pepó

  Views:

  259

  We made plant physiology examinations in Arkaso winter oilseed rape hybrid substance: relative chlorophyll content (SPAD) and leaf area index (LAI) measurements. The experiment was set in University of Debrecen Agricultural Sciences Center at Látóképi Experimental Station in four replications, in two different sowing times (I. sowing date on 08/22/2014 and II. sowing date on 09/09/2014 sowing againhappened because of the incomplete germination in the second subtance 01/10/2014) Three different plant density 200, 350 and 500 thousand ha^-1, under the same nutrient supply, 45 cm row spacing. The experiment was green crop of winter wheat. The relative chlorophyll content (SPAD) and leaf area index (LAI) measurements were made in seven different times. We measured the maximum value of chlorophyll content in the first sowing time at 500, and the second sowing time at 350 thousand ha^-1 plant density. The measurement results proved that there was a linear relationship between the number of plants and the LAI. The maximum leaf area index values we measured in both the sowing time at 500 thousand ha^-1 reached.