The effects of water stress on yield and water productivity of two newly released wheat varieties
Abstract
201 words
This experiment was conducted under Gezira condition,Wad
Medani, latitude 14º 242 N, longitude 33º 292 E and with an
elevation of 405 m above the sea level, during season (2008/2009).
A split plot design with four replications and nine irrigation
treatments was used. Treatments included full irrigation, i.e.,
water applied every ten days and other eight treatments where
water stress conditions were imposed by skipping one irrigation
at different irrigation times. Two wheat varieties namely Tagana
and Khalifa were grown under the different water stress
treatments. Water treatments were assigned to main plots and
varieties as subplots. Soil samples were collected every 20 cm
down to one meter depth after and before each irrigation for
soil moisture depletion determination. Penman-Monteith
reference evapotranspiration, ETo was estimated using
meteorological data collected from Wad Medani Station. Data
collected included actual evapotranspiration, ETa, amount of
applied irrigation water (m3/ha) applied, yield, yield components
and soil parameters. Result indicated that Tagana was more
tolerant to water stress compared to Khalifa. Booting and
anthessis were the most sensitive stages to water stress. To
maximize yield, moisture stress should be avoided during these stages. This experiment will be repeated during the (2010/2011)
winter season to confirm these results.
Subjects
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