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Pak. J. Bot., 45(4): 1299-1305, 2013. |
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Updated: 04-07-13 | ||||
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EFFECT OF TIME OF NITROGEN APPLICATION ON MORPHOLOGICAL AND PHYSIOLOGICAL ATTRIBUTES OF DUAL-PURPOSE WHEAT
KHALID NAVEED1*, MUHAMMAD AYYAZ KHAN2, MOHAMMAD SAFDAR BALOCH2, NAEEM KHAN3 AND MUHAMMAD AMJAD NADIM4
Abstract:
Wheat can be used as dual-purpose (forage and grain) crop, however, to
avoid loss in grain yield, it requires proper fertilizer and crop
management practices. In order to assess the effects of nitrogen time of
application on growth and yield components of dual-purpose wheat, an
experiment was conducted at the Agricultural Research Institute, Dera
Ismail Khan, during the years 2009-10 and 2010-11. The results revealed
that maximum number of productive tillers (m-2), number of
grains spike-1, leaf area index and duration (112 days after
sowing), crop growth rate and grain yield was obtained in plots that
received 75% recommended dose of nitrogen after cut. Fresh and dry
forage yield were maximum either when full dose or 75% of recommended
nitrogen was applied at sowing. Leaf area index and duration (56 days
after sowing) was maximum when full dose of recommended nitrogen was
applied at sowing. Minimum plant height was recorded in control plots.
Split application of nitrogen increased grain protein content over sole
or no application of nitrogen in dual-purpose wheat. The application of
nitrogen either in two equal splits or 25% applied at sowing and 75%
after cut resulted in increased benefit cost ratio. 1Department of Agriculture, University of Haripur, Haripur, Pakistan 2Department of Agronomy, Faculty of Agriculture, Gomal University, D.I. Khan, Pakistan 3 Weeds Science Department, KPK Agricultural University, Peshawar, Pakistan 4Agricultural Research Institute, D.I. Khan, Pakistan *Corresponding author’s email: k_naveed1974@yahoo.com |
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