| dc.contributor.advisor | Dr. Bikash Chandra Sarker | |
| dc.contributor.author | ISLAM, MD. AZIZUL | |
| dc.date.accessioned | 2022-04-20T07:16:57Z | |
| dc.date.available | 2022-04-20T07:16:57Z | |
| dc.date.issued | 2009 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/300 | |
| dc.description | Globally, rice is the second most important cereal crop after wheat in terms
of area, production and consumption. It is, therefore, playing an important
role in the national economy of many developing countries (Trans, 2001).
Agriculture in Bangladesh is characterized by intensive crop production
with rice based cropping systems. About 40% of the world’s population
consumes rice as a major source of calorie (Banik, 1999). In Bangladesh,
rice is cultivated in 10.579 million hectares having the average yield of 2.58
tons ha “with the production of 27.318 million for the year 2006-2007
(HAS, 2007). Rice is grown under diverse ecosystem such as irrigated,
rainfed and deep water conditions in the four distinct rice growing seasons,
namely aus, transplant aman, broadcast aman and boro (Alim, 1982). Rice,
the staple food of the Bangladesh is cultivated in the 75% of the cultivable
land (BBS, 2002) and it contributes 9.05% of the natural gross domestic
product (BBS, 2004). The agricultural land of Bangladesh is being
decreased by about 1% per annum (Husain ef al., 2006) while the
population is increasing at an alarming rate of 1.43%. | en_US |
| dc.description.abstract | A field experiment was carried out to study the effect of different doses
of IAA alone or in combination with soil water on root growth, hydraulic
and yield performance and to determine the effective dose for IAA for
boro rice cv. BRRIdhan28. The treatments were concentrations of IAA
i.e. 50, 100 and 150, ppm alone and with water. The root dry weight, root
fresh weight, root volume, root surface area, root length, root diameter at
soil base were increased markedly for 100 ppm IAA under flooded water
condition. It was also observed that the combined application of IAA and
flooded irrigation were more effective and found to be superior to others
treatments for root growth parameters. There is no marked variation in
root anatomy and suberin lipid deposition in root cell endodermis layer.
The hydraulic conductance of rice cv. BRRIdhan28 under flooded
condition had higher than that of drought condition. In case of
morphological characters, the maximum plant height was recorded 90.56
cm in the treatment of 100 ppm IAA+ continuous flooded irrigation. The
highest NAR was found in 100 ppm IAA+ continuous flooded irrigation.
The maximum Leaf dry weight, stem dry weight, root dry weight and
total dry matter was recorded at 40 and 80 DAT in 100 ppm IAA+
continuous flooded irrigation over control. The highest yield was
observed (3.42 kg/plot) in 100 ppm IAA+ continuous flooded irrigation. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | Location of the experimental site | en_US |
| dc.subject | Treatment, design and layout | en_US |
| dc.subject | Preparation and application of plant growth 16 regulator | en_US |
| dc.title | ROOT GROWTH, HYDROULIC CONDUCTANCE AND YIELD OF RICE (BRRIdhan28) UNDER LIMITED WATER AND GROWTH REGULATOR | en_US |
| dc.type | Thesis | en_US |
