Abstract:To evaluate the effects of integrated nutrient management on growth and yield of BARI tomato-14 and soil fertility, a pot experiment was conducted in the net house of the department of Agricultural Chemistry of Bangladesh Agricultural University, Mymensingh during the period from October 2011 to April 2012. The experiment was laid out in a completely randomized design with 11 treatments and 3 replications. Treatments were control, RDCF100, 75% RDCF, 50% RDCF, 75% RDCF + PM2 t /ha, 75% RDCF + RS3 t /ha, 75% RDC… Show more
“…(2016) also observed that the number of leaves plant −1 was higher with the increased S rates up to 30 kg ha −1 . This finding is also similar with the previous reports for the increased leaf number of different crops with S fertilization ( Islam et al., 2013 ; Lalitha and Gopala 2004 ). Figure 2 Effects of different levels of sulphur on the number of leaves of Aloe vera L. at different days after transplanting (DAT).…”
Sulphur plays a vital role in the formation and biosynthesis of protein, chlorophyll, and few amino acids. To investigate the effect of sulphur fertilizer on leaf biomass yield, critical sulphur concentration, sulphur requirement and uptake by
Aloe vera
L., a pot experiment was carried out following completely randomized design with six levels of sulphur viz., 0, 15, 30, 45, 60 and 80 kg ha
−1
with three replications. The results of the study revealed that the growth attributes, leaf and gel yield, and sulphur uptake significantly improved with sulphur application and the best results were obtained from the application of 45 kg sulphur ha
−1
. On average, addition of sulphur enhanced the leaf biomass yield by 47.5% and sulphur use efficiency by 38% compared to control. The effect of sulphur on the growth parameters and their significant and positive correlations with yield signifies the importance of sulphur on the yield and quality of
A. vera
. The calculated minimum amount of sulphur for 80% leaf biomass production was 21.1 kg sulphur ha
−1
with a critical leaf sulphur concentration of 0.23% in
A. vera.
Moreover, sulphur addition to soil substantially enhanced the economic returns of
A. vera
. Therefore, addition of 45 kg sulphur ha
−1
could be a better option for obtaining higher yield and economic return of
A. vera
.
“…(2016) also observed that the number of leaves plant −1 was higher with the increased S rates up to 30 kg ha −1 . This finding is also similar with the previous reports for the increased leaf number of different crops with S fertilization ( Islam et al., 2013 ; Lalitha and Gopala 2004 ). Figure 2 Effects of different levels of sulphur on the number of leaves of Aloe vera L. at different days after transplanting (DAT).…”
Sulphur plays a vital role in the formation and biosynthesis of protein, chlorophyll, and few amino acids. To investigate the effect of sulphur fertilizer on leaf biomass yield, critical sulphur concentration, sulphur requirement and uptake by
Aloe vera
L., a pot experiment was carried out following completely randomized design with six levels of sulphur viz., 0, 15, 30, 45, 60 and 80 kg ha
−1
with three replications. The results of the study revealed that the growth attributes, leaf and gel yield, and sulphur uptake significantly improved with sulphur application and the best results were obtained from the application of 45 kg sulphur ha
−1
. On average, addition of sulphur enhanced the leaf biomass yield by 47.5% and sulphur use efficiency by 38% compared to control. The effect of sulphur on the growth parameters and their significant and positive correlations with yield signifies the importance of sulphur on the yield and quality of
A. vera
. The calculated minimum amount of sulphur for 80% leaf biomass production was 21.1 kg sulphur ha
−1
with a critical leaf sulphur concentration of 0.23% in
A. vera.
Moreover, sulphur addition to soil substantially enhanced the economic returns of
A. vera
. Therefore, addition of 45 kg sulphur ha
−1
could be a better option for obtaining higher yield and economic return of
A. vera
.
“…It is, therefore, imperative that if the number of branches plant -1 is higher, the numbers of leaves are expected to be higher; ultimately the leaf yield will be higher. This finding is also similar with the results of Islam et al (2013) who reported that number of branch plant -1 was increased due to application of different doses of inorganic fertilizers. These growth parameters might have possibly contributed positively to the higher leaf yield with higher N application.…”
Section: Discussion Leaf Yield and Yield Attributessupporting
confidence: 82%
“…Nasrin (2008) obtained higher values of yield and yield parameters of stevia with N @ 250 kg ha -1 . This finding is also similar with the results of Islam et al (2013) who reported that number of leaves plant -1 in tomato was increased due to application of different doses of inorganic fertilizers. Leaf area is an important growth indices determining the capacity of plant to trap solar energy for photosynthesis and has marked influence on the growth and yield of plant.…”
Section: Discussion Leaf Yield and Yield Attributessupporting
Nitrogen is recognized as one of the most limiting nutrient for crop growth in Bangladesh and can be supplemented with inorganic fertilizers like urea. The experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University during March to July 2012. The objective was to examine the effects of different levels of N on the growth, leaf biomass yield, N content and to estimate minimum N requirement and critical N content of stevia. The treatments included six N rates (0, 100, 150, 200, 250 and 300 kg ha -1 ). Plant sampling was done at 15, 30, 45 and 60 days after planting (DAP) to measure plant height, number of branches and leaves, fresh and dry weight of leaves, leaf area and N concentration. The results revealed that all the characters were significantly affected by different N rates. The highest values of all parameters except plant height and N concentration were obtained from 250 kg N ha -1 and the lowest values from N control. Nitrogen application at all levels increased leaf dry yield at harvest by 99 to 505% in acid soil and 69 to 438% in noncalcareous soil, respectively over control. The growth of most parameters was rapid at the later stages (30 to 60 DAP). Leaf N content proportionately increased with the increasing rates of N. The highest N concentration was obtained from its highest application (300 kg N ha -1 ). The minimum amount of N for maximum leaf biomass production in the plants grown in acid and non-calcareous soils was estimated to be ca 273 and 257 kg ha -1 , respectively. The critical N concentration to achieve 80% of the maximum production of stevia leaf was also estimated to be ca 1.43 and 1.50% in the leaves of stevia plants grown in acid and non-calcareous soils, respectively.
“…Kawatani et al, (1980) had also reported increased number of branches and leaves plant -1 of stevia with higher inorganic nutrition in Japan. This finding is also similar with the results of Islam et al, (2013) who reported that number of leaves plant -1 in tomato was increased due to the application of different doses of inorganic fertilizers. Aladakatti et al, (2012) found that plant height of stevia at harvest was significantly influenced by higher levels of nitrogen, phosphorus and potassium which in turn were responsible for higher number of branches plant -1 and number of leaves plant -1 resulting into higher leaf yield.…”
SteviaLeaf biomass yield PUE P requirement Critical P content Knowledge of phosphorus (P) uptake and its use efficiency by crop plants is essential for adequate management of the plant nutrients to sustain food production with a minimal environmental impact. To study the effects of P on the growth, leaf biomass production, P content and uptake and to estimate P use efficiency (PUE), minimum P requirement and critical leaf P content of stevia, a pot experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University following completely randomized design (CRD) with three replications in acid and non-calcareous soils of Bangladesh. The applied treatments was six viz. 0 (P0), 25 (P25), 50 (P50), 75 (P75), 100 (P100) and 150 (P150) kg P ha -1 . Plant samples were collected at 15 days interval to obtain different parameters. Collective results indicated that significantly highest values of different parameters were obtained with P @ 100 kg ha -1 and the lowest from P control. Phosphorus application increased leaf dry yield at harvest by 55 to 510% in acid soil and 70 to 488% in non-calcareous soil over control. The rapid growth of the plant was recorded at the later stages (30 to 60 days after planting). Phosphorus content and uptake was directly proportional with the increased levels of P except the treatment P150 in both soils. Maximum PUE and fertilizer P use efficiency (FPUE) was observed at P100 treatment. Critical P content was estimated to be ca 0.19 and 0.30% in the leaves of stevia plants grown in acid and non-calcareous soils, respectively. For maximum leaf biomass production of stevia grown in acid and non-calcareous soils, the minimum requirement of P was also estimated to be ca 109 and 104 kg ha -1 , respectively. The information of this finding would contribute to optimize the soil P use and improve fertilizer management for stevia cultivation.To cite this article: Maniruzzaman M, T Chowdhury, MAH Chowdhury and MA Rahman, 2017. Phosphorus use efficiency and critical P content of stevia grown in acid and non-calcareous soils of Bangladesh. Res. Agric. Livest., Fish., 4 (2): 55-68.
Maniruzzaman et al.Phosphorus use efficiency and critical P content of stevia Res.
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