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significant negative relation with grain yield
whereas in respect of flag leaf anatomical trails, 387 HOSSAIN, M.I. (Regional Wheat Research
only the association between radial dimension of Centre, Rajshahi); UDDIN, J. (SRDI, Regional
big xylem vessel and grain yield was significantly Laboratory, Rajshahi); RAHMAN, M.A.;
negative and the correlation between number of AHMED, M. (SRDI, Regional Laboratory,
veins and grain yield was significantly positive. Rajshahi) & QUDDUS, K.G. (Agrotechnology
Discipline, Khulna University, Khulna). Raised-
386 HOSSAIN, M.I. (Regional Wheat Research bed Land Management for Increasing Wheat
Centre, Shyampur, Rajshshi); ISLAM, M.K. Production under Rice-Wheat Cropping Systems.
(Dept. of Crop Science and Technology, Rajshahi South Asian J. Agric., 2006, 1(2), 55-58.
Univerity, Rajshahi); SUFIAN, M.A. (Wheat
Research Centre, Dinajpur); MEISNER, C.A. A study was conducted during three wheat related
(Cornell University) & ISLAM, M.S. (Dept. of cropping seasons at the Regional Wheat Research
Genetics and Breeding, Rajshahi University, Center experimental field in Rajshahi, Bangladesh,
Rajshahi). Effect of Planting Method and Nitrogen to compare the effects of tillage options, nitrogen
Levels on the Yield and Yield Attributes of Wheat. levels and nitrogen management strategies on
J. Bio-Sci., 2006, 14, 127-130. wheat. Two tillage system : (manually prepared,
permanent bed and conventionally tilled on the
A field trial was conducted during the winter flat), two nitrogen management practices
season of 2001-2002 to find out the effect of (broadcast, and furrow placement between wheat
–1
planting method and nitrogen levels on wheat. rows) and three N levels (50, 100 and 150% N ha
Effects of two planting methods viz. bed planting of recommended N dose representing 60, 120 and
–1
and conventional planting were studied on three 180 kg ha ) were used. Wheat yields predictably
nitrogen levels viz. 50,100 & 150 kg /ha on wheat responded to N fertilizer rates in all years over all
(var. Protiva). Planting methods exhibited treatments. There were no significant differences
significant variation in respect of all the characters between the two nitrogen management practices in
studied. The maximum grain yield (3.60 t/ha) was 2 out of 3 years. Using raised beds at 150% N rate
obtained from bed planting. Different levels of gave statistically higher yield in all years. Using
nitrogen significantly influenced on yield and yield raised beds at 50% N rate was statistically similar
attributing parameters of wheat. The highest grain to 150% conventionally tilled in all years. The data
yield (3.70 t/ha) was recorded from 150 kg N per indicate that by using raised beds compared to
hectare. The interaction effects of planting conventional tillage, nitrogen uptake and efficiency
methods and nitrogen levels showed the significant can be increased. The maximum N uptake by the
2
difference in respect of spike/m , spike length and grain and total N uptake by the plant was recorded
grain yield. Highest grain yield (4.04 t/ha) was in PB where the highest dose of N was applied.
obtained at bed planting using 150 kg N per Permanent bed tillage systems also showed
hectare. Though higher rate of N are used but substantial water saving (35%) over the CTF
lodging of plant height was not noticed. The treatments. Thus, in areas where water resources
correlation analysis showed that the rate of change are often limited and nutrient uptake and
of grain yield was highly dependent upon the rate efficiencies are low, the use of raised beds in a
of change of yield contributing characters of permanent bed cropping system would be a distinct
wheat. advantage.
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