Influence of sowing date and inter-row spacing on the structural yield elements in two soybean varieties
Georgi Georgiev • Galina Naidenova • Rositca Todorova
Soybean Experimental Station – Pavlikeni, Bulgaria
Резюме
Data from two-factor field experiments carry out in the 2016-2018 period in
Soybean Experimental Station – Pavlikeni, wеre used in the study. The experiments
were carried out with two types of soybean - Avigeya and Isidor, which are
determinated as standard varieties for Bulgaria. Three sowing periods (early,
optimal and late) and two methods of sowing - wide-ranging at 45 cm and narrowrowed
at 25 cm spacing, were studied. An analysis of the structuring yield elements
was carried out: plant height; number of branches; number of beans and number
of seeds per plant; seed mass of one plant and mass per 1000 seeds. In tabular and
graphical form, the factorial impacts on these elements of yield are presented, as
well as their significance. It has been established that the Avigeya variety has a
better adaptability to the different sowing times and inter-row spacing.
Key words: Soybean, Sowing date, Row spacing, Yield elements
