| dc.description | The Author express his deepest sense of gratefulness to the Almighty Who has enabled him to
complete the present research work and to prepare this capacious thesis for the degree of master
of science(M.S) in Soil Science.
The Author expresses sincere gratitude, profound, respect and Imminences indebtedness to his
supervisor professor Dr. Shah Moinur Rahnan department of Soil science, Hajee Mohammad
Danesh Science and Technology University, Dinajpur for his continuous inspiration, scholastic
and systematic supervision, valuable advice and generous help for the completion of the
research work. Without his help and supervision it would not be possible to complete the
dissertation within the stipulated period. Sincere appreciation is also due to his constructive
criticism and meticulous corrections of thesis manuscript.
The Author feels proud to express his whole hearted sense of respect and gratefulness to his Co Supervisor Dr. Md. Mansur Rahman, Professor Department of Soil Science, Hajee Mohammad
Danesh Science and Technology University, Dinajpur, for his valuable suggestions, sincere help
and intellectual instructions during the period of research work.He is also indebted to him for
his encouragements and valuable criticisms in the preparation of this credible dissertation.
The Author would like to express his sincere gratitude and indebtedness to his respected
teachersProfessor Md. Mizanur Rahman Department of Soil Science, A.K.M. Mosharof Hossain,
Professor, Department of Soil Science, Associate Professor S.M. Sayem Department of Soil
Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur for their kind
helps, co-operations and valuable suggestions.
The Author is immensely grateful to all of his friends, senior and younger brothers and well
wishers for their direct and indirect helps, good wishes and regrets for his inability to mention
every one of them by name.
And last, from the core of heart, the author feels duty bound to acknowledge the blessings and
incentives of his beloved parents Md. Jahirul Islam and Most Razia Khatun for their blessing,
inspirations, sacrifices and moral supports and financial assistance, which encouraged and
paved the way of higher studies. | en_US |
| dc.description.abstract | A field experiment was carried out at Soil Science research field, Hajee Mohammad Danesh Science and
Technology University, Dinajpur, during the period from December, 2016 to April, 2017 to assess the
effect of split application of nitrogen fertilizer on growth, yield of BRRI dhan 29. The experiment
consisted of 5 nitrogen levels viz., T0 (without fertilizer), Farmer's practice (225 kg ha-1
at 3 equal splits,
1/3 at 0 DAT (Day After Transplanting) + 1/3 at 30 DAT+ 1/3 at 70 DAT ), T1 (225 kg ha-1
, at 5 equal
splits, 1/5 at 0 DAT+1/5 at 28 DAT+1/5 at 45 DAT+1/5 at 60 DAT+1/5 at 75 DAT) and T2 (225 kg/ha, at
4 equal splits, 1/4 at 0 DAT +1/4 at 30 DAT + 1/4 at 50 DAT+1/4 at 70 DAT), T3 (200 kg ha-1
, at 3 equal
splits,1/3 at 0 DAT+1/3 at 30 DAT+1/3 at 70 DAT). Plant height, number of tiller hill-1 were recorded at
35 DAT, 45 DAT, 55 DAT, 65 DAT, 75 DAT 85 DAT and also at maturity. At harvest, data on plant
height, number of panicle hill-1
, length of panicle, number of filled grains panicle-1
, number of unfilled
grains panicle-1
, 1000-grain weight, grain yield, straw yield, biological yield hill-1
, total N, available P,
exchangeable K and also protein content were recorded in grain and straw. The effect of different split
application of N fertilizer was found statistically significant on all parameters studied at 35 DAT, 45
DAT, 55 DAT, 65 DAT, 75 DAT, 85 DAT and also at maturity stage except the unfilled grain panicle-1
and 1000-grain weight. At maturity the highest results of all parameters were found in T1, but incase of
unfilled grains panicle-1
in FP was the highest. Number of panicles hill-1
in FP and T2 was statistically
similar. The highest value of protein content was recorded in the treatment T1, which statistically
dissimilar to others. Lowest protein content in T0. Protein content in FP,T2 and T3 was statistically
similar. Unfilled grains panicle-1 was similar in T1 and T2. 1000 grain weight was statistically similar in
T0, FP and T2 but highest in T1 and lowest in T3. From the above results it was revealed that full dose of
urea T1 (1/5 at 0 DAT+1/5 at 28 DAT+1/5 at 45 DAT+1/5 at 60 DAT+1/5 at 75 DAT) was more
effective than the other split application. So the recommendation of this research was that 225 kg ha-1
of
urea at 5 equal splits, 1/5 at 0 DAT+1/5 at 28 DAT+1/5 at 45 DAT+1/5 at 60 DAT+1/5 at 75 DAT should
be applied for BRRI dhan 29 for better yield and this dose was also economically feasible. | en_US |
