| dc.contributor.advisor | Professor Dr. Balaram Roy | |
| dc.contributor.author | FERDOUS , RAWNAK ARA NOOR -E- | |
| dc.date.accessioned | 2022-04-24T05:30:01Z | |
| dc.date.available | 2022-04-24T05:30:01Z | |
| dc.date.issued | 2010 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/733 | |
| dc.description | Stevia (Stevia rebaudiana Bert.) belongs to the family Compositae is
sweet herb and caloric free natural sweetener and originated in the
Paraguay. Dr. M. S. Bertoni officially discovered the sweet herb stevia in
early 20" century (1905). Stevia now successfully grown in Paraguay,
Maxico, Central American, Japan, China, Malaysia, South Korea and
recently started in different parts of India especially in south India. In
Europe it is also reported to be cultivated in Spain, Belgium and United
Kingdom. The first reports of commercial cultivation in Paraguay were in
1964 (Kalayama et al., 1976). Stevia leaves and stevioside are safe for
human consumption (Kinghorn and Soejarto, 1985; Kinghorn, 1992).
There have been no reports to date of adverse effects from the use of
Stevia products by humans (Brandle and Rosa, 1992). The dry leaves of
this plant are 30 times sweeter than sugar, with zero calories. Whereas
pure extract stevioside is non-caloric and 300 times sweeter than sugar
(Bhosle, 2004). Stevioside, a sweet compound contained in leaves of
stevia, has recently been attracting much attention as an alternative
sweetener (Crammer and Ikan, 1987). It is now commonly used as a
natural sweetener in beverages and foods (Ishi ef al., 1987), being
preferred over other non-caloric sucrose substances as it is heat-stable,
some what resistant to acid hydrolysis, and non-fermentable (Kinghorn and Soaejarto, 1991). Literature survey reveals stevia’s versatile
application in treatment of obesity, weight loss, dental health, high blood
pressure, oral health, carbohydrates cravings, skin toning and healing,
tobacco and alcohol cravings and antihyperglycemic effects of stevioside
in diabetic subjects (Gregersen et al., 2004). The global market size and
business of medicinal plant materials including stevia and health care
products based on this herbs comes to around 62 billob US § and is likely
to cross the 1 trillion mark by 2020 and 5 trillion by 2050 (Patra and
Khanuja, 2005). Stevioside content varies with the dry weight of the
leaves depending growing condition (Nepovim ef al., 1998 and Guens,
2003). Hence, it is necessary to improve agro techniques for increasing
the biomass yield and stevioside of stevia. Influence of methods of
planting and fertilizer levels on growth, yield, nutrient uptake of stevia
was reported by Chalapthi e¢ al., 1997 and Chalapthi e¢ al., 1999 but no
such comparative study of agro technique so far been reported till. | en_US |
| dc.description.abstract | The experiment was conducted at the Bangladesh Sugarcane Research Institute (BSRI),
Ishurdi, Pabna experimental farm during March 2010 to August 2010 to study the growth,
yield and nutrient content of stevia as influenced by different cultivation methods.
Significant different was recorded among different cultivation methods. Data were
collected on plant height (cm), number of branch plant’, number of leaves plant’, leaf
area plant’! (cm), average leaf length (cm), average leaf breadth (cm), perimeter, leaf
length and breadth ratio, shape factor, accumulation area (cm), fresh weight plant’ (g),
dry weight plant! (g), fresh leaf yield plant! (g), dry leaf yield plant” (g), fresh leaf yield
ha’ (kg), dry leaf yield ha’' (kg), N(%), P (%), K (%), S (%), Ca (%), Mg (%), Zn (ug g"')
of stevia leaf. Highest plant height was obtained in T, (under mango tree cultivation)
treatment (127.93 cm) at 147 DAT. The highest primary and secondary branches at 147
DAT were recorded in T (field cultivation) treatment (12.72) and (31.83), respectively.
The number of leaf plant! and leaf area plant! of stevia were significantly influenced by
different cultivation methods and highest in T; treatment. The average leaf length and
average leaf breadth of stevia leaf ranged from 3.01 cm to 3.29 cm, and 1.32 cm to 1.48
cm, respectively. The highest perimeter, and leaf length and breadth ratio were obtained
in T; (field cultivation) treatment (7.46), and (2.24), respectively. The highest fresh and
dry weight plant' (165.92 g) and (44.15 g) were obtain from T, (field cultivation)
treatment, respectively. The highest fresh and dry weight ha! were recorded in T, (field
cultivation) treatment. The highest fresh leaf yield and dry leaf yield were obtain from T;
(field cultivation) treatment (91.37 g plant!) and (24.83 2 plant’), respectively.
Significantly highest fresh and dry leaf yield were recorded in T; (field cultivation)
treatment (4512.12 kg ha'), and (1226.17 kg ha’), respectively. The highest total
chlorophyll (1.98 mg g’'), chlorophyll ‘a’ (1.42 mg g”), chlorophyll ‘b’ (0.52 mg g") and
protein (10.00%) in T, (field cultivation) treatment. The N content in stevia leaf ranged
from 1.71 to 1.6.2%. the highest Phosphorus content was obtained in T (field cultivation)
treatment (0.128%) and lowest in T2 (under mango tree cultivation) treatment (0.085%).
The K content in stevia leaf ranged from 0.13 to 0.14%. The highest Sulphur content was
recorded in T, (field cultivation) treatment (0.25%), followed by T2 (pot cultivation)
treatment (0.21%), while the lowest Sulphur content T2 (under mango tree cultivation)
treatment (0.14%). The Ca and Mg content in stevia leaf ranged from (1.12 to 1.24%) and
(0.102 to 0.104%), respectively. The highest Zn content was recorded in T, (field
cultivation) treatment (62.87 wg g'). Thus, the T) (field cultivation) showed the best
performance in respect to fresh and dry leaf yield plant’ (g), fresh and dry leaf yield ha"
(kg) and nutrient contents. Results indicated that strong possibilities of field cultivation of
stevia in Bangladesh. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | STEVIA AS INFLUENCED BY DIFFERENT | en_US |
| dc.subject | Crop production of stevia | en_US |
| dc.subject | Stevia is a new crop in Bangladesh | en_US |
| dc.title | GROWTH, YIELD AND NUTRIENT CONTENT OF STEVIA AS INFLUENCED BY DIFFERENT 7 CULTIVATION METHODS | en_US |
| dc.type | Thesis | en_US |
