Author details
Author H. N. Giri |
Available item(s) by this author (3)
Refine your search Apply to external sourcesEfficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan / H. N. Giri in Journal of Agriculture and Forestry University, Volume 4 (2020)
Title : Efficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan Material Type: printed text Authors: H. N. Giri, Author ; M. D. Sharma, Author ; R.B Thapa, Author ; B. B. Khatri, Author ; K. R. Pandey, Author Publication Date: 2020 Article on page: 177-182 p. Languages : English (eng) Keywords: Bio-pesticides, cabbage butterfly, cauliflower, Snow Mystique Abstract: Cabbage butterfly (Pieris brassicae nepalensis) is an important pest of cabbage, cauliflower, and many other crucifers.
Pesticide use is a popular method of pest management in small and large-scale vegetable farming in Nepal. These practices
are directly linked to human health, biodiversity, and the environment. There are various categories of pesticides available in
market, some are toxic, and some are ‘soft’ in nature. Chemical action of pesticides to the insect pest has been recommended
by efficacy testing. Accordingly this research was done to evaluate the effectiveness of ‘soft’ chemicals against cabbage
butterfly management. Cauliflower cultivar ‘Snow Mystique’ was used for the field experiment established at Agriculture
and Forestry University (AFU), Rampur Chitwan during November 2017 to March 2018. Six common pesticides such as
Mahashakti (Bt. based), Neemix (Azadirachtin based), Spinosad (bacteria based), Liquid manure (mixture of botanical, cow
urine and other ingredients), Superkiller-10 (Cypermethrin based), and control (no use) were used in Randomized Complete
Block Design (RCBD), each with four replication. The study findings revealed that the highest number of larval populations
of cabbage butterfly as well as damaged plants, leaves, curds, and holes were recorded in control plot, and the lowest larval
population and damages were recorded in Cypermethrin and Spinosad treated plots. On the other hand, curd height was
significantly higher (13.9 cm) in liquid manure treated plot that was similar with Spinosad treated plots. There was no
significant difference in curd diameter (23.1 cm) and biological yield (79.6 t/ha) in Spinosad and Cypermethrin treated plots.
It is thus suggested that biological pesticide, such as Spinosad are superior in controlling pests of cauliflower than other tested
pesticides. These pesticides along with other soft pesticide are potentially safer for vegetable production. This information is
important to develop IPM protocol for cabbage butterfly management in crucifers.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy%20testing%20of%20%E2%80%98soft%E [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 177-182 p.[article] Efficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan [printed text] / H. N. Giri, Author ; M. D. Sharma, Author ; R.B Thapa, Author ; B. B. Khatri, Author ; K. R. Pandey, Author . - 2020 . - 177-182 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 177-182 p.
Keywords: Bio-pesticides, cabbage butterfly, cauliflower, Snow Mystique Abstract: Cabbage butterfly (Pieris brassicae nepalensis) is an important pest of cabbage, cauliflower, and many other crucifers.
Pesticide use is a popular method of pest management in small and large-scale vegetable farming in Nepal. These practices
are directly linked to human health, biodiversity, and the environment. There are various categories of pesticides available in
market, some are toxic, and some are ‘soft’ in nature. Chemical action of pesticides to the insect pest has been recommended
by efficacy testing. Accordingly this research was done to evaluate the effectiveness of ‘soft’ chemicals against cabbage
butterfly management. Cauliflower cultivar ‘Snow Mystique’ was used for the field experiment established at Agriculture
and Forestry University (AFU), Rampur Chitwan during November 2017 to March 2018. Six common pesticides such as
Mahashakti (Bt. based), Neemix (Azadirachtin based), Spinosad (bacteria based), Liquid manure (mixture of botanical, cow
urine and other ingredients), Superkiller-10 (Cypermethrin based), and control (no use) were used in Randomized Complete
Block Design (RCBD), each with four replication. The study findings revealed that the highest number of larval populations
of cabbage butterfly as well as damaged plants, leaves, curds, and holes were recorded in control plot, and the lowest larval
population and damages were recorded in Cypermethrin and Spinosad treated plots. On the other hand, curd height was
significantly higher (13.9 cm) in liquid manure treated plot that was similar with Spinosad treated plots. There was no
significant difference in curd diameter (23.1 cm) and biological yield (79.6 t/ha) in Spinosad and Cypermethrin treated plots.
It is thus suggested that biological pesticide, such as Spinosad are superior in controlling pests of cauliflower than other tested
pesticides. These pesticides along with other soft pesticide are potentially safer for vegetable production. This information is
important to develop IPM protocol for cabbage butterfly management in crucifers.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy%20testing%20of%20%E2%80%98soft%E [...]
Title : Growth, yield and post-harvest quality of late season cauliflower grown at two ecological zones of Nepal Material Type: printed text Authors: H. N. Giri, Author ; M. D. Sharma, Author ; K. R. Pandey, Author ; B. B. Khatri, Author Publication Date: 2018 Article on page: 119-126 p. Languages : English (eng) Keywords: Cauliflower, late season, biological yield, curd yield, post-harvest. Abstract: Eleven late season cauliflower (Brassica oleracea L. Botrytis) cultivars were grown in varietal trail
consisting of four separate replicated plantings with RCB design at Rampur, Chitwan and Puranchaur,
Kaski during the winter season of 2016-2017. These newly introduced varieties were- Amazing,
Artica, Freedom, Ravella, Titan, Bishop, Casper, Indam 9803, NS 106, Snow-mystique and Snowball
16. The main objective of this research was to identify the short duration genotypes of late season
cauliflower to mitigate the negative effects of high temperature. The recorded parameters were plant
height, canopy diameter, curd yield, post-harvest quality, period of curd initiation and curd maturity.
The maximum plant height was recorded in Bishop (73.1 cm) at Rampur while the lowest height was
recorded in Snowball 16 (47.5 cm) at Puranchaur. Similarly, the maximum plant canopy was recorded
in NS 106 (76.2 cm) at Rampur while the lowest in Snowball 16 (48.2 cm) at Puranchaur. Whereas
the maximum curd yield (55.7 t/ha.) was found in Bishop at Rampur, but the lowest curd yield
(19t/ha) was found in Snowball16 at Puranchaur. In the case of maturity period, Bishop and Freedom
at Rampur were having shorter period (81 days) while Snowball 16 at Puranchaur had longest period
(124 days). The varieties at Rampur showed the higher pH than Puranchaur whereas the highest TSS
was recorded in Snowball 16 at Rampur. It was thus clear that plant growth parameters, yield and postharvest quality of major late season varieties of cauliflower were differed significantly in Terai and
Mid-hill region of Nepal. Newly introduced varieties Bishop and NS 106 produced the highest plant
height and canopy diameter. Bishop along with NS 106 was recognized as short duration varieties
which can minimize the negative effects of high temperature during late season.Link for e-copy: https://afu.edu.np/sites/default/files/Growth%2C_yield_and_post-harvest_quality_ [...]
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 119-126 p.[article] Growth, yield and post-harvest quality of late season cauliflower grown at two ecological zones of Nepal [printed text] / H. N. Giri, Author ; M. D. Sharma, Author ; K. R. Pandey, Author ; B. B. Khatri, Author . - 2018 . - 119-126 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 119-126 p.
Keywords: Cauliflower, late season, biological yield, curd yield, post-harvest. Abstract: Eleven late season cauliflower (Brassica oleracea L. Botrytis) cultivars were grown in varietal trail
consisting of four separate replicated plantings with RCB design at Rampur, Chitwan and Puranchaur,
Kaski during the winter season of 2016-2017. These newly introduced varieties were- Amazing,
Artica, Freedom, Ravella, Titan, Bishop, Casper, Indam 9803, NS 106, Snow-mystique and Snowball
16. The main objective of this research was to identify the short duration genotypes of late season
cauliflower to mitigate the negative effects of high temperature. The recorded parameters were plant
height, canopy diameter, curd yield, post-harvest quality, period of curd initiation and curd maturity.
The maximum plant height was recorded in Bishop (73.1 cm) at Rampur while the lowest height was
recorded in Snowball 16 (47.5 cm) at Puranchaur. Similarly, the maximum plant canopy was recorded
in NS 106 (76.2 cm) at Rampur while the lowest in Snowball 16 (48.2 cm) at Puranchaur. Whereas
the maximum curd yield (55.7 t/ha.) was found in Bishop at Rampur, but the lowest curd yield
(19t/ha) was found in Snowball16 at Puranchaur. In the case of maturity period, Bishop and Freedom
at Rampur were having shorter period (81 days) while Snowball 16 at Puranchaur had longest period
(124 days). The varieties at Rampur showed the higher pH than Puranchaur whereas the highest TSS
was recorded in Snowball 16 at Rampur. It was thus clear that plant growth parameters, yield and postharvest quality of major late season varieties of cauliflower were differed significantly in Terai and
Mid-hill region of Nepal. Newly introduced varieties Bishop and NS 106 produced the highest plant
height and canopy diameter. Bishop along with NS 106 was recognized as short duration varieties
which can minimize the negative effects of high temperature during late season.Link for e-copy: https://afu.edu.np/sites/default/files/Growth%2C_yield_and_post-harvest_quality_ [...]
Title : Growth, yield and post harvest quality of late season varieties of cauliflower at Rampur, Chitwan Material Type: printed text Authors: H. N. Giri, Author Publication Date: 2020 Article on page: 169-175 p. Languages : English (eng) Keywords: Cauliflower, curd maturity, late season, post-harvest Abstract: An experiment was done to evaluate eleven late season cauliflower varieties at Rampur, Chitwan, Nepal during November
2017 to March, 2018. All the tested varieties were introduced from USA, Europe, and India viz. Amazing, Artica, Freedom,
Ravella, Titan, Bishop, Casper, Indam 9803, and NS 106 while two varieties; Snowmystique and Snowball 16 were from
Nepal. The experiment was set by using Randomized Complete Block Design (RCBD) with an arrangement of each
treatment replicated for four times. The main objective of this study was to identify the short duration late season varieties of
cauliflower to be adapted to high temperature condition during late winter. Parameters considered to evaluate the varieties
included- plant height, leaf length, canopy diameter, curd height, curd diameter, yield, along with postharvest parameters,
such as Total soluble solid (TSS), Titrable acidity (TA), pH, and Vitamin C content. Similarly, 50% curd initiation and curd
maturity of the cauliflower was also measured to find the crop growth period. The highest plant height, leaf length and canopy
diameter was mostly produced by Titan, Snow mystique, and NS 106 while the lowest plant height, leaf length and canopy
diameter was produced by Snowball 16 and Amazing. Similarly, significantly shorter period for 50% curd initiation of 68
days was observed in NS 106 and shorter period for 50% curd maturation of 78 days was recorded in Freedom compared to
the rest of the treatments. Significantly largest curd height and diameter was measured for NS 106. Similarly, significantly
higher curd yield of 52.3 t/ha was produced by Bishop, but it was statistically similar (p>0.05) to NS 106 (51.1 t/ha).
Likewise, significantly higher TSS of 5.4 ºBrix and Vitamin C content of 55 mg/100 g was produced by Snowball 16 and
Bishop, respectively. Thus, the probable varieties that could be considered best for late winter could be Bishop, NS 106,
Snowmystique, Artica, Freedom, Titan, and Amazing that may comparatively better adapt to the high temperature conditionLink for e-copy: https://afu.edu.np/sites/default/files/Growth%2C%20yield%20and%20post%20harvest% [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 169-175 p.[article] Growth, yield and post harvest quality of late season varieties of cauliflower at Rampur, Chitwan [printed text] / H. N. Giri, Author . - 2020 . - 169-175 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 169-175 p.
Keywords: Cauliflower, curd maturity, late season, post-harvest Abstract: An experiment was done to evaluate eleven late season cauliflower varieties at Rampur, Chitwan, Nepal during November
2017 to March, 2018. All the tested varieties were introduced from USA, Europe, and India viz. Amazing, Artica, Freedom,
Ravella, Titan, Bishop, Casper, Indam 9803, and NS 106 while two varieties; Snowmystique and Snowball 16 were from
Nepal. The experiment was set by using Randomized Complete Block Design (RCBD) with an arrangement of each
treatment replicated for four times. The main objective of this study was to identify the short duration late season varieties of
cauliflower to be adapted to high temperature condition during late winter. Parameters considered to evaluate the varieties
included- plant height, leaf length, canopy diameter, curd height, curd diameter, yield, along with postharvest parameters,
such as Total soluble solid (TSS), Titrable acidity (TA), pH, and Vitamin C content. Similarly, 50% curd initiation and curd
maturity of the cauliflower was also measured to find the crop growth period. The highest plant height, leaf length and canopy
diameter was mostly produced by Titan, Snow mystique, and NS 106 while the lowest plant height, leaf length and canopy
diameter was produced by Snowball 16 and Amazing. Similarly, significantly shorter period for 50% curd initiation of 68
days was observed in NS 106 and shorter period for 50% curd maturation of 78 days was recorded in Freedom compared to
the rest of the treatments. Significantly largest curd height and diameter was measured for NS 106. Similarly, significantly
higher curd yield of 52.3 t/ha was produced by Bishop, but it was statistically similar (p>0.05) to NS 106 (51.1 t/ha).
Likewise, significantly higher TSS of 5.4 ºBrix and Vitamin C content of 55 mg/100 g was produced by Snowball 16 and
Bishop, respectively. Thus, the probable varieties that could be considered best for late winter could be Bishop, NS 106,
Snowmystique, Artica, Freedom, Titan, and Amazing that may comparatively better adapt to the high temperature conditionLink for e-copy: https://afu.edu.np/sites/default/files/Growth%2C%20yield%20and%20post%20harvest% [...]
