The effect of variety and row spacing on seed yield of amaranth (Amaranthus ssp.)
1998
Jamriska, P. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (Slovak Republic))
In field experiments on degraded chernozem, the effects of six varieties and two row spacing (125 and 500 mm) on the seed yield, stand density and height, and 1000 seed weight (TSW) of amaranth have been studied. With the exception of TSW, weather conditions influenced evaluated characters the most. Plainsman variety had the best yield (2.69 t.haE=1), on the other hand, the lowest yield of (2.27 t.haE-1) appeared in the K-369 variety. The stands with narrower row spacing produced, on the average, higher yields than the stands with wider row spacing. Weather conditions had the greatest effect on the stand density. Variability of TSW was affected more by varieties than by weather conditions. Row spacing in that case had no influence and, on the contrary, there was only one case of significant variety interaction with row spacing. With narrower rows, there were different relations between varieties than with wider row spacing. TSW of varieties 1008 and 29-USA varied, depending on the year, much less than TSW of 17-GUA variety.
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