EFFECTS OF IRRIGATION LEVELS AT DIFFERENT STAGES OF GROWTH AND SOWING DATE ON THE GROWTH, YIELD AND MALTING QUALITY OF BARLEY (Hordeum v u l g a r e L.)
EFFECTS OF IRRIGATION LEVELS AT DIFFERENT STAGES OF GROWTH AND SOWING DATE ON THE GROWTH, YIELD AND MALTING QUALITY OF BARLEY (Hordeum v u l g a r e L.)
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Date
1988-09
Authors
ABDULKADIR, AZAREMA
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Abstract
A f i e l d experiment was conducted under i r r i g a t i on
a t the I r r i g a t i o n Research S t a t i o n , Kadawa, in the
Sudan savanna e c o l o g i c a l zone of n o r t h e r n N i g e r ia
d u r i n g the 1986/87 dry season to study the e f f e c t s of
d i f f e r e n t i r r i g a t i o n l e v e l s at d i f f e r e n t s t a g e s of growth
and sowing date on the growth, y i e l d and m a l t i n g q u a l i ty
of b a r l e y (Hordeurn v u l g a r e L . ).
The t r e a t m e n t s c o n s i s t e d of four i r r i g a t i o n l e v e ls
(optimum i r r i g a t i o n water throughout growth p e r i o d,
50% optimum water at the v e g e t a t i v e stage only, 50%
optimum water at the r e p r o d u c t i v e s t a g e only and 50%
optimum water throughout growth p e r i o d ) using IW/CPE
r a t i o ; and t h r e e sowing d a t e s (early-November, l a t e -
November and mid-December),
B a r l e y s u p p l i e d with optimum i r r i g a t i o n water
throughout growth p e r i o d produced the h i g h e s t g r a in
y i e l d of 3209 kg/ha which was reduced by about 30, 23
and 48% when 50% optimum water was withheld at the
v e g e t a t i v e s t a g e , r e p r o d u c t i v e s t a g e and throughout
growth p e r i o d , r e s p e c t i v e l y . All growth p a r a m e t e r s,
y i e l d components and WUE were h i g h e s t when the crop was
s u p p l i e d optimum i r r i g a t i o n water throughout. However,
t h e g r a i n p r o t e i n content was lowest when p l a n t s were
s u p p l i e d optimum water throughout, while withholding
50% i r r i g a t i o n water throughout growth r e s u l t e d in the
highest grain protein content. Similarly, a l l growth
parameters, yield and yield components and WUE were
highest with late-November sowing, but grain protein
content was lowest compared to early-November and mid-
December sowings.
The interaction was significant on number of
spikes per square meter, length of spike, number of
grains per spike, grain yield, straw yield and grain
protein content. Most of the parameters measured were
significantly and positively correlated to grain yield.
Grain protein content was however, negatively correlated
to grain yield.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE
SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA IN
PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR
THE DEGREE OF MASTER OF SCIENCE IN AGRONOMY.
DEPARTMENT OF AGRONOMY,
FACULTY OF AGRICULTURE,
AHMADU BELLO UNIVERSITY,
ZARIA, NIGERIA.
SEPTEMBER, 1988
Keywords
EFFECTS,, IRRIGATION,, LEVELS,, DIFFERENT,, STAGES,, GROWTH,, SOWING,, DATE,, GROWTH,, YIELD,, MALTING,, QUALITY,, BARLEY,, (Hordeum v u l g a r e L.).