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Influence of lucerne growth densities on seed yields


Influence of lucerne growth densities on seed yields



Vedecke Prace Vyskumneho Ustavu Rastlinnej Vyroby v Piestanoch Krmoviny 23: 29-41



Over the years 1982-1987 the influence of lucerne growth organization (row distances 125, 250 and 500 mm, sowing rates from 0.75 to 8.0 million seeds per hectare) was followed on seed yields in the 2nd and 3rd vegetation years, left to seed from the first or second cuts. The growth organization influenced seed production at threshold levels of significance. Highest yields were obtained with 250 mm row distance, and 2.5 and 1.5 million sowing rates, and with 125 mm row distance and 3.0 million sowing rate per hectare. Yields were significantly higher in the 2nd vegetation year and second cuts as compared to 3rd year and seeds from first cuts. Maximum yields in the third vegetation year were shifted in the direction of more dense growths, and extremely dense or scant growths were found unsuitable from the viewpoint of combined use for both seed and green matter yields. Weather was found as decisive factor in the formation of lucerne seed yields.

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