Nitrogen rate and timing implementation on durum wheat in a bed planting system
The effects of nitrogen (N) fertilization at different growth stages were investigated on durum wheat (Triticum durum L.) grain yield and yield components (with irrigated bed planting) in Diyarbakir, Turkey. N was applied at a rate of 140 kg ha–1 and distributed to one, two and three applications...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Kebangsaan Malaysia
2016
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| Online Access: | http://journalarticle.ukm.my/9676/ http://journalarticle.ukm.my/9676/ http://journalarticle.ukm.my/9676/1/09_Mehmet_Yildirim.pdf |
| Summary: | The effects of nitrogen (N) fertilization at different growth stages were investigated on durum wheat (Triticum durum
L.) grain yield and yield components (with irrigated bed planting) in Diyarbakir, Turkey. N was applied at a rate of 140
kg ha–1 and distributed to one, two and three applications at various combinations with five different growth stages (i.e.
sowing, seedling growth, early tillering, stem elongation and booting). This study included 13 treatments, including the
control (zero nitrogen). The N application timings (NAT) of the 50% sowing + 50% early tillering and 66% sowing +
33% early tillering treatments were most suitable for durum wheat. The results showed that NAT had significant effect
on flowering time, SPAD readings of the early milky ripe stage, plant density, thousand kernel weights, grain filling
duration, grain filling rate, grain N content, grain yield, harvest index and grain N yield. In summary, the highest values
of parameters studied were obtained from the 50% sowing + 50% first tillering and 66% sowing + 33% early tillering
treatments. N fertilization application rate and time of durum wheat genotypes should consist of applying 50-60% of
the total N fertilizer at sowing and 40–50% at the early tillering stage under irrigated conditions and with bed planting. |
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