| dc.contributor.advisor | Professor Dr. Mohammad Ataur Rahman | |
| dc.contributor.author | Ahsanullah, A.S.M. | |
| dc.date.accessioned | 2022-04-22T05:10:05Z | |
| dc.date.available | 2022-04-22T05:10:05Z | |
| dc.date.issued | 2012-06 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/487 | |
| dc.description | Rice (Oryza sativa, L.) is one of the most important cereals of the world based on
the population consuming rice (IRRI, 1981). In Bangladesh, rice is the staple food
and as a result, about two-thirds of cultivation land area is devoted to rice
production (AIS, 1992). The area and production of rice in the country are 10.78
million hectors and 25.19 million tons, respectively (BBS, 2007). Bangladesh
ranks fourth both in respect of area and production of rice among the rice
producing countries following China, India and Indonesia (FAO, 1994). It is the
only source of cash income for many farmers in this country (BARC, 1983).
However, Bangladesh has been facing a chronic and at the time a sizable food
shortage over years due to high population pressure. Every year food grains are
being imported at the cost of huge foreign exchange. On the other hand, the
people of Bangladesh have been suffering from protein deficiency. Rice can
supplement a major proportion of the protein need of the people because it
contains 6-9% protein. But since the horizontal expansion of the rice area is not
possible, the yield of rice per unit area should be increased to lessen the growing
demand of the people for food. | en_US |
| dc.description.abstract | field experiment was conducted at fi) Agronomy Field Laboratory,
Department of Agronomy, Hajee Mohammad Danesh Science and Technology
University, Dinajpur during the period from March to July 2007. The study was
aimed at determining the effect of rate and time of nitrogen and their interaction
on BR26 Aus rice. There were twenty treatment combinations consisting of five
rates of nitrogen (0, 30, 60, 90, and 120 kg N/ha from Urea) and four levels of
time of nitrogen application (T1, T2, T3 and T4), ‘replicated three times within a
Randomized Block Design, The effect of nitrogen rate was significant for both
the grain and straw yields. Nitrogen rate increased grain yield up to 60 kg/ha and
no further response achieved. The rate of increase of yield was much higher
(40%) at 30 kg/ha of nitrogen compared to the control (1.95 t/ha) and retarded
(43%) at 90 kg N/ha. On the other hand, straw yield increased up to 90 kg N/ha
and decreased at 120 kg N/ha. Of the yield components, effective tillers/hill,
number of filled grains /panicle and 1000 grain weight increased significantly up
to only 60 kg/ha of nitrogen. The increased in grain and straw yields due to
nitrogen rate was supported through the increased in growth parameters as
monitored in leaf area index (LAI), crop dry matter/m? and tillers/hill. Time of
nitrogen application was not significant for grain yield but some differences
among treatments were observed for filled grains/ panicle, straw yield and growth
parameters like dry matter/m” and LAI \A significant interaction between rate and
time of nitrogen application was obuarvedl in the application of 60 kg N/ha in
three equal splits which produced the highest grain yield (3.64 t/ha). | | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | AUS RICE CV BR26 | en_US |
| dc.title | EFFECT OF RATE AND TIME OF NITROGEN APPLICATION ON THE GROWTH AND YIELD OF AUS RICE CV BR26 | en_US |
| dc.type | Thesis | en_US |
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