Efficacy 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)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 4 (2020) . - 177-182 p. 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 [...] [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 [...]

Growth, yield and post-harvest quality of late season cauliflower grown at two ecological zones of Nepal / H. N. Giri in Journal of Agriculture and Forestry University, Volume 2 (2018)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 2 (2018) . - 119-126 p. 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_ [...] [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_ [...]