Impact of weather conditions and farming systems on size distribution of starch granules and flour yield of winter wheat
Laen...
Kuupäev
2020
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Kirjastaja
MDPI
Abstrakt
The size distribution of wheat-grain starch granules has an impact on the yield of fine flour.
The aim of the study was to compare the impact of conventional (mineral fertilizers, pesticides) and
organic farming treatments (cover crops, composted cattle manure) on (i) the size distribution of
starch granules, (ii) the level of the first break whole and fine flour yield. The grain samples of winter
wheat cv Fredis were taken from a long-term field crop rotation experiment established in 2008 at
the Estonian University of Life Sciences in Tartu County (58 220 N, 26 400 E) on Stagnic Luvisol soil.
The weather conditions during the grain filling period of winter wheat had a strong impact (p < 0.001)
on the grain starch granule size distribution. The proportion of starch granules with a smaller diameter
(C-type granules) was higher in years with a longer grain filling period. The size distribution of
starch granules was not influenced by farming system. The increased proportion of C-type granules
increased the fine flour yield significantly. Fertilisation with organic manure and twice with mineral
nitrogen increased significantly the mean diameter value of different starch granules.
Kirjeldus
Märksõnad
organic, conventional farming, whole, fine flour yield, articles