Author details
Author N. P. Pandit |
Available item(s) by this author (3)
Refine your search Apply to external sourcesEffectiveness of different measures to control red bloom in carp ponds / R. B. Mandal in Journal of Agriculture and Forestry University, Volume 5 (2022)
Title : Effectiveness of different measures to control red bloom in carp ponds Material Type: printed text Authors: R. B. Mandal, Author ; S. Rai, Author ; M. K. Shrestha, Author ; D. K. Jha, Author ; N. P. Pandit, Author Publication Date: 2022 Article on page: 139-147 p. Languages : English (eng) Keywords: Euglena sanguinea, phytoplankton, mitigation, fish production Abstract: Red blooms caused by Euglena sanguinea (Ehrenberg, 1832) might cause severe depletion of dissolved oxygen
significantly in the pond. An experiment was conducted to assess the effects of measures for controlling E.
sanguinea on water quality, growth and yield of carp polyculture. The experiment included four treatments:
without mitigation measure (T1), skimming using net skimmer (T2), fertilization with urea and diammonium
phosphate (T3) and liming using agriculture lime (T4) with three replications. The experiment was carried out
for 120 days. The results showed that abundance of E. sanguinea was significantly lower (p diammonium phosphate treated ponds (270 ± 10 cells L-1) than control ponds (1650 ± 90 cells L-1). Water quality
parameter such as nitrite, total nitrogen and total phosphorus were significantly (p ponds (T1) than in treatment ponds. The net fish yield of rohu was significantly higher (0.19 ± 0.0 t ha-1) in T3
ponds than T2 ponds (0.07 ± 0.0 t ha-1). The present experiment effectively controlled abundance of E. sanguinea
but admixture of urea and diammonium phosphate application appeared to be better control measures because
dissolved oxygen content was at acceptable level in the ponds.Link for e-copy: https://afu.edu.np/sites/default/files/Effectiveness_of_different_measures_to_co [...]
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 139-147 p.[article] Effectiveness of different measures to control red bloom in carp ponds [printed text] / R. B. Mandal, Author ; S. Rai, Author ; M. K. Shrestha, Author ; D. K. Jha, Author ; N. P. Pandit, Author . - 2022 . - 139-147 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 139-147 p.
Keywords: Euglena sanguinea, phytoplankton, mitigation, fish production Abstract: Red blooms caused by Euglena sanguinea (Ehrenberg, 1832) might cause severe depletion of dissolved oxygen
significantly in the pond. An experiment was conducted to assess the effects of measures for controlling E.
sanguinea on water quality, growth and yield of carp polyculture. The experiment included four treatments:
without mitigation measure (T1), skimming using net skimmer (T2), fertilization with urea and diammonium
phosphate (T3) and liming using agriculture lime (T4) with three replications. The experiment was carried out
for 120 days. The results showed that abundance of E. sanguinea was significantly lower (p diammonium phosphate treated ponds (270 ± 10 cells L-1) than control ponds (1650 ± 90 cells L-1). Water quality
parameter such as nitrite, total nitrogen and total phosphorus were significantly (p ponds (T1) than in treatment ponds. The net fish yield of rohu was significantly higher (0.19 ± 0.0 t ha-1) in T3
ponds than T2 ponds (0.07 ± 0.0 t ha-1). The present experiment effectively controlled abundance of E. sanguinea
but admixture of urea and diammonium phosphate application appeared to be better control measures because
dissolved oxygen content was at acceptable level in the ponds.Link for e-copy: https://afu.edu.np/sites/default/files/Effectiveness_of_different_measures_to_co [...]
Title : Effects of sunlight on the abundance of Euglenophyceae in earthen ponds | R. B. Mandal, S. Rai, M. K. Shrestha, D. K. Jha, and N. P. Pandit Material Type: printed text Authors: R. B. Mandal, Author ; S. Rai, Author ; M. K. Shrestha, Author ; D. K. Jha, Author ; N. P. Pandit, Author Publication Date: 2020 Article on page: 289-294 p. Languages : English (eng) Keywords: Red bloom, Euglena sanguinea, dynamics, light intensity, density Abstract: Algal red bloom in carp ponds has been a serious concern to farmers due its scum covering the entire pond surface area
during the day and disappearing in the evening. Thus it is important to examine the effects of sunlight on dynamics of red
bloom algae in ponds. An experiment was done with the use of three treatments, i) non-red bloom pond with sunlight, ii),
red bloom pond with sunlight, and iii) red bloom pond without sunlight; each treatment was replicated thrice. Density
of Euglenophyceae was assessed from two different water depths (10 cm and 50 cm) at three different times: morning,
afternoon, and evening. Results showed that Euglena sanguinea Ehrenberg, 1832 was dominant among euglenophytes and
it showed vertical and temporal migration with sunlight intensity. Density of E. sanguinea was significantly higher (p at 10 cm and lower (p Euglenophyceae and E. sanguinea by 69% and 80%, respectively. Maximum red bloom was observed during 12.00 to 13.00
hours, when light intensity was highest (1928 Lux to 1988 Lux). Appearance and disappearance of red bloom in the pond
was due to vertical migration of E. sanguinea with sunlight intensity.Link for e-copy: https://afu.edu.np/sites/default/files/Effects%20of%20sunlight%20on%20the%20abun [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 289-294 p.[article] Effects of sunlight on the abundance of Euglenophyceae in earthen ponds | R. B. Mandal, S. Rai, M. K. Shrestha, D. K. Jha, and N. P. Pandit [printed text] / R. B. Mandal, Author ; S. Rai, Author ; M. K. Shrestha, Author ; D. K. Jha, Author ; N. P. Pandit, Author . - 2020 . - 289-294 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 289-294 p.
Keywords: Red bloom, Euglena sanguinea, dynamics, light intensity, density Abstract: Algal red bloom in carp ponds has been a serious concern to farmers due its scum covering the entire pond surface area
during the day and disappearing in the evening. Thus it is important to examine the effects of sunlight on dynamics of red
bloom algae in ponds. An experiment was done with the use of three treatments, i) non-red bloom pond with sunlight, ii),
red bloom pond with sunlight, and iii) red bloom pond without sunlight; each treatment was replicated thrice. Density
of Euglenophyceae was assessed from two different water depths (10 cm and 50 cm) at three different times: morning,
afternoon, and evening. Results showed that Euglena sanguinea Ehrenberg, 1832 was dominant among euglenophytes and
it showed vertical and temporal migration with sunlight intensity. Density of E. sanguinea was significantly higher (p at 10 cm and lower (p Euglenophyceae and E. sanguinea by 69% and 80%, respectively. Maximum red bloom was observed during 12.00 to 13.00
hours, when light intensity was highest (1928 Lux to 1988 Lux). Appearance and disappearance of red bloom in the pond
was due to vertical migration of E. sanguinea with sunlight intensity.Link for e-copy: https://afu.edu.np/sites/default/files/Effects%20of%20sunlight%20on%20the%20abun [...]
Title : Efficacy of tamoxifen on sex reversal of nile tilapia (Oreochromis niloticus) Material Type: printed text Authors: N. P. Pandit, Author ; R, Ranjan, Author ; R. Wagle, Author ; A. K, Yadav, Author ; N. R. Jaishi, Author ; I. Singh Mahato, Author Publication Date: 2018 Article on page: 211-216 p. Languages : English (eng) Keywords: Cytotam 20 non-steroidal aromatase inhibitor masculinization Abstract: The efficacy of tamoxifen, a non-steroidal aromatase inhibitor, for inducing masculinization in
Nile tilapia was assessed. Nine days post hatch tilapia fry were reared in fine meshed nylon hapas,
suspended in a green cemented pond, and fed with tamoxifen (Cytotam 20) @ 150, 200, 250, 300,
350, 500, and 1000 mg/kg diet for 30 and 40 days. In 30 days treatment group, the percentage of male
fed with tamoxifen @ 150, 200, 250, 300, 350, 500 and 1000 mg/kg diet were 67.6±0.5, 72.4±2.7,
84.5±1.8, 87.5±1.4, 89.7±1.0, 90.0±1.3 and 96.7±1.2, respectively, while control group had 50.8±0.9
to 50.9±1.4% males. Although the treatment with tamoxifen in lower concentrations (150-500 mg/
kg diet) significantly increased the male proportion compared to control diet, the percentage of male
was significantly highest in treatment with 1000 mg/kg diet. There were no significant differences
in percentage of male between 30 and 40 days of treatment durations. Likewise there was no
significant difference in the survival of Nile tilapia fries among control and treatment groups. The
findings revealed that tamoxifen has potential for production of all-male Nile tilapia. The best dose
of tamoxifen was 1000 mg/kg feed. However, increased dose of tamoxifen should be tested to induce
100% masculinizationLink for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_tamoxifen_on_sex_reversal_of_ [...]
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 211-216 p.[article] Efficacy of tamoxifen on sex reversal of nile tilapia (Oreochromis niloticus) [printed text] / N. P. Pandit, Author ; R, Ranjan, Author ; R. Wagle, Author ; A. K, Yadav, Author ; N. R. Jaishi, Author ; I. Singh Mahato, Author . - 2018 . - 211-216 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 211-216 p.
Keywords: Cytotam 20 non-steroidal aromatase inhibitor masculinization Abstract: The efficacy of tamoxifen, a non-steroidal aromatase inhibitor, for inducing masculinization in
Nile tilapia was assessed. Nine days post hatch tilapia fry were reared in fine meshed nylon hapas,
suspended in a green cemented pond, and fed with tamoxifen (Cytotam 20) @ 150, 200, 250, 300,
350, 500, and 1000 mg/kg diet for 30 and 40 days. In 30 days treatment group, the percentage of male
fed with tamoxifen @ 150, 200, 250, 300, 350, 500 and 1000 mg/kg diet were 67.6±0.5, 72.4±2.7,
84.5±1.8, 87.5±1.4, 89.7±1.0, 90.0±1.3 and 96.7±1.2, respectively, while control group had 50.8±0.9
to 50.9±1.4% males. Although the treatment with tamoxifen in lower concentrations (150-500 mg/
kg diet) significantly increased the male proportion compared to control diet, the percentage of male
was significantly highest in treatment with 1000 mg/kg diet. There were no significant differences
in percentage of male between 30 and 40 days of treatment durations. Likewise there was no
significant difference in the survival of Nile tilapia fries among control and treatment groups. The
findings revealed that tamoxifen has potential for production of all-male Nile tilapia. The best dose
of tamoxifen was 1000 mg/kg feed. However, increased dose of tamoxifen should be tested to induce
100% masculinizationLink for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_tamoxifen_on_sex_reversal_of_ [...]
