Growth rate and yields of a sorghum-sudangrass hybrid variety grown on a light and a medium-heavy soil as affected by cutting management and seeding rate
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Date
2011
Authors
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Journal ISSN
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Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
Light vs. medium-heavy soil, number of cuts and seeding
rate were studied for their effect on growth rate and yields of
cv. Nutri Honey, a sorghum-sudangrass hybrid grown in a field
trial at Pawłowice (51?09´ N; 17?06´ E) in the years 2007–2009.
The experiment site is part of the Department of Crop Production,
Wrocław University of Life Sciences, Poland. The experiment
was set up on two soils, light and medium-heavy, in mid-
May. No interaction among the factors under study was found
for the number of plants after emergence, number of shoots prior
to harvest, or for the dry matter yield. Number of plants after
emergence was significantly higher on the light soil. Conversely,
number of tillers at the end of growth was higher on the mediumheavy
soil. Increasing the number of cuts promoted tillering and
increased the number of shoots as counted at the end of growth.
Weather pattern was found to have the greatest impact on yields.
In the favourable year of 2009 the yield of DM was 14.8 t ha-1.
Number of cuts significantly affected the yields of DM, the highest
yields being obtained with a single harvest (16,0 t DM ha-1).
The hybrid Nutri Honey gave significantly higher yields on
the medium-heavy soil (12,8 t DM ha-1) than on the light one
(10,5 t DM ha-1). Increasing seeding rate by 100% had no appreciable
effect on DM yields.
Keywords
sorghum-sudangrass hybrid, soil heaviness category, cutting frequency, growth rate, dry matter yield
Citation
Polish Journal of Agronomy
2011, 4, 23–28