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The effects of different
sowing depth on grain yield and some grain yield components
in wheat (Triticum aestivum L.) cultivars under
dryland conditions
Mehmet Yagmur* and Digdem Kaydan
Y.Y.U.,
Faculty of Agriculture, Department of Field Crops, 65080
Van, Turkey.
*Corresponding author. E-mail:
myagmur@yyu.edu.tr.
Accepted
3 November, 2008 |
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The aim of the current study was to determine the effects of
sowing depths (3, 5, 7, 9 cm) on grain
yield and yield components for
wheat cultivars during 2004-2006 at one site in Van Province
in Eastern Turkey. Grain yield and yield components were
found to positively correlate with coleoptile length, with
marked declines observed in grain yield and yield components
among varieties with shorter coleoptiles in deepest sowing.
Wheat sown at 5 cm gave greater yields than wheat sown at 3,
7 and 9 cm by 19.9, 22.3 and 62.5%, respectively. The
highest grain yield (2.98 T ha-1)
was obtained with the Alparslan cultivar sown at a depth of
5 cm. Grain yield of all varieties tested was drastically
reduced when sown at depths of 9 cm, with the exception of
the local Tir and Alparslan varieties, both of which, when
compared to the other varieties tested, had longer
coleoptiles.
Key
words:
Wheat (Triticum aestivum L.), sowing depth, grain
yield. |
