Aphid pest management in sweet pepper field with rapeseed as a companion crop / A. Shrestha in Journal of Agriculture and Forestry University, Volume 5 (2022)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 5 (2022) . - 89-94 p. Title : Aphid pest management in sweet pepper field with rapeseed as a companion crop Material Type: printed text Authors: A. Shrestha, Author ; S. Tiwari, Author ; Regmi,R., Author ; B. Gautam, Author Publication Date: 2022 Article on page: 89-94 p. Languages : English (eng) Keywords: Aphid, sweet pepper, companion crop, ladybird beetles, syrphid flies Abstract: Sweet pepper, Capsicum annum L. is commercially grown vegetable grown for its nutritional and economical value. Sucking pests like aphids, whiteflies, thrips, mites, etc. are the major insect pest in sweet pepper fields. Farmers deliberately have been using chemical pesticides in their crop to manage various insect pest and such practices of using hazardous chemicals are harmful to human health and the biodiversity. Similarly, farmers don't have an idea of planting trap and/or companion plants and its role in natural control of pest. Hence, a study was conducted to know the population dynamics, especially to assess the aphid (Myzus persicae, Sulzer) population and its potential natural enemies by planting rapeseed as companion crop. This field experiment was conducted in six different locations of Bharatpur-23, Chitwan from Nov 2019 to Jan 2020 where three plots of sweet pepper were planted with rapeseed as companion crop and other three plots solely having no floral source around. Aphid population was recorded at weekly interval and its major natural enemies; ladybird beetle and syrphid fly. Abnormal data were squared root transformed and analyzed by using paired sample t-test. The result showed that the aphid population in sweet pepper field with companion crop was significantly lower than in sweet pepper grown without floral source (control). Highly significant number of ladybird beetles and syrphid flies were recorded in sweet pepper with companion crop compared to control. The finding is helpful to develop an integrated management protocol of sweet pepper pests with the practice of following conservation biological control strategy Link for e-copy: https://afu.edu.np/sites/default/files/Aphid_pest_management_in_sweet_pepper_fie [...] [article] Aphid pest management in sweet pepper field with rapeseed as a companion crop [printed text] / A. Shrestha, Author ; S. Tiwari, Author ; Regmi,R., Author ; B. Gautam, Author . - 2022 . - 89-94 p. Languages : English (eng) in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 89-94 p. Keywords: Aphid, sweet pepper, companion crop, ladybird beetles, syrphid flies Abstract: Sweet pepper, Capsicum annum L. is commercially grown vegetable grown for its nutritional and economical value. Sucking pests like aphids, whiteflies, thrips, mites, etc. are the major insect pest in sweet pepper fields. Farmers deliberately have been using chemical pesticides in their crop to manage various insect pest and such practices of using hazardous chemicals are harmful to human health and the biodiversity. Similarly, farmers don't have an idea of planting trap and/or companion plants and its role in natural control of pest. Hence, a study was conducted to know the population dynamics, especially to assess the aphid (Myzus persicae, Sulzer) population and its potential natural enemies by planting rapeseed as companion crop. This field experiment was conducted in six different locations of Bharatpur-23, Chitwan from Nov 2019 to Jan 2020 where three plots of sweet pepper were planted with rapeseed as companion crop and other three plots solely having no floral source around. Aphid population was recorded at weekly interval and its major natural enemies; ladybird beetle and syrphid fly. Abnormal data were squared root transformed and analyzed by using paired sample t-test. The result showed that the aphid population in sweet pepper field with companion crop was significantly lower than in sweet pepper grown without floral source (control). Highly significant number of ladybird beetles and syrphid flies were recorded in sweet pepper with companion crop compared to control. The finding is helpful to develop an integrated management protocol of sweet pepper pests with the practice of following conservation biological control strategy Link for e-copy: https://afu.edu.np/sites/default/files/Aphid_pest_management_in_sweet_pepper_fie [...]

Effects of different doses of nitrogen on jassid (Amrasca biguttula biguttula Ishida), and red cotton bug (Dysdercus koenigii F) population and yield of okra (Abelmoschus esculentus (L.) Moench) in Chitwan, Nepal / B. Belbase in Journal of Agriculture and Forestry University, Volume 3 (2019)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 3 (2019) . - 43-48 p. Title : Effects of different doses of nitrogen on jassid (Amrasca biguttula biguttula Ishida), and red cotton bug (Dysdercus koenigii F) population and yield of okra (Abelmoschus esculentus (L.) Moench) in Chitwan, Nepal Material Type: printed text Authors: B. Belbase, Author ; G. Neupane, Author ; H. Yadav, Author ; N. Pandey, Author ; Regmi,R., Author Publication Date: 2020 Article on page: 43-48 p. Languages : English (eng) Keywords: Sucking pest, fertilizer, infestation, yield Abstract: Insect pests such as okra jassid (Amrasca biguttula biguttula) and red cotton bug (Dysdercus koenigii) are the major crop limiting biotic constraint in okra in Nepal. Man-made fossil-based pesticides and synthetic fertilizers use are the common practices to reduce pest infestations, and to increase crop production. These synthetic agricultural practices are extremely harmful to human health, biodiversity maintenance, and the environment. The aim of this experiment was to develop an appropriate pest management protocol by adopting good agricultural practices. Higher than the recommended dose of nitrogen-based fertilizer can increase the pest and diseases infestations as well as reduce the crop yield in long-run. Hence, the main objective of this experiment was to analyze the effect of different doses of nitrogen fertilizer to the population of sucking insect pest, such as jassid, and red cotton bug. The experiment was done by using a Randomized Complete Block Design (RCBD), with five treatments (200 kg N ha-1, 150 kg N ha-1, 100 kg N ha-1, 50 kg N ha-1, 0 kg N ha-1), each replicated four time. Results revealed that increase rate of nitrogenous fertilizer increase the infestation rate of jassid and red cotton bug. However, the highest yield was recorded in 200 kg N ha-1 followed by 150 kg N ha-1, respectively. The highest benefit-cost ratio was found in 150 kg N ha-1 and 100 kg N ha-1. It is thus suggested that optimum use of nitrogen increase the economic profit as well as reduce the pest infestation of sucking insect. Link for e-copy: https://afu.edu.np/sites/default/files/4._Effects_of_different_doses_of_nitrogen [...] [article] Effects of different doses of nitrogen on jassid (Amrasca biguttula biguttula Ishida), and red cotton bug (Dysdercus koenigii F) population and yield of okra (Abelmoschus esculentus (L.) Moench) in Chitwan, Nepal [printed text] / B. Belbase, Author ; G. Neupane, Author ; H. Yadav, Author ; N. Pandey, Author ; Regmi,R., Author . - 2020 . - 43-48 p. Languages : English (eng) in Journal of Agriculture and Forestry University > Volume 3 (2019) . - 43-48 p. Keywords: Sucking pest, fertilizer, infestation, yield Abstract: Insect pests such as okra jassid (Amrasca biguttula biguttula) and red cotton bug (Dysdercus koenigii) are the major crop limiting biotic constraint in okra in Nepal. Man-made fossil-based pesticides and synthetic fertilizers use are the common practices to reduce pest infestations, and to increase crop production. These synthetic agricultural practices are extremely harmful to human health, biodiversity maintenance, and the environment. The aim of this experiment was to develop an appropriate pest management protocol by adopting good agricultural practices. Higher than the recommended dose of nitrogen-based fertilizer can increase the pest and diseases infestations as well as reduce the crop yield in long-run. Hence, the main objective of this experiment was to analyze the effect of different doses of nitrogen fertilizer to the population of sucking insect pest, such as jassid, and red cotton bug. The experiment was done by using a Randomized Complete Block Design (RCBD), with five treatments (200 kg N ha-1, 150 kg N ha-1, 100 kg N ha-1, 50 kg N ha-1, 0 kg N ha-1), each replicated four time. Results revealed that increase rate of nitrogenous fertilizer increase the infestation rate of jassid and red cotton bug. However, the highest yield was recorded in 200 kg N ha-1 followed by 150 kg N ha-1, respectively. The highest benefit-cost ratio was found in 150 kg N ha-1 and 100 kg N ha-1. It is thus suggested that optimum use of nitrogen increase the economic profit as well as reduce the pest infestation of sucking insect. Link for e-copy: https://afu.edu.np/sites/default/files/4._Effects_of_different_doses_of_nitrogen [...]

Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) / B. Sapkota in Journal of Agriculture and Forestry University, Volume 5 (2022)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 5 (2022) . - 95-101 p. Title : Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) Material Type: printed text Authors: B. Sapkota, Author ; Regmi,R., Author ; S. Tiwari, Author ; R.B Thapa, Author Publication Date: 2022 Article on page: 95-101 p. Languages : English (eng) Keywords: Bio-pesticides, cabbage, P. xylostella, management, emamectin benzoate, neemix Abstract: Diamondback moth, Plutella xylostella (L.) is the most devastating pest in late winter in cabbage (Brassica oleracea var. capitata L.). Pesticides are the common pest management practices to manage the crucifer pests. These practices are not sustainable and ecofriendly. Hence, a field experiment was conducted to evaluate the efficacy of chemical, botanicals and biological insecticides todevelop safer and more effective insecticides for the diamondback moth, in cabbage during winter season 2018-19. The experiment was laid in a randomized block design (RCBD) with four replication and five treatments viz. i) Emamectin benzoate 5SG @ 0.4 gm/l, ii) Neemix (Azadirachtin 300 ppm) @ 2 ml/l, iii) Metarhizium anisopliae @ 2 ml/l, iv) Beauveri abassiana @ 2 ml/l and v) control (untreated). Standard recommended agronomic practices were followed in field to ensure better crop growth. The maximum reduction of P. xylostella larval population over untreated control was recorded in Emamectin benzoate 5 SG (95%) andNeemix(95%) sprayed field. Bio-pesticides such asM. anisopliae and B. bassiana were effective only after the first spray with maximum efficacy of (76%) and (65%), respectively, and decreased efficacy in the second and third sprays. Both yields with the least number of damaged leaves and maximum net profit was recorded in Emamectin benzoate sprayed plots with a higher benefit-cost ratio of (3.47), which was followed by M. anisopliae(2.96) and Neemix (2.92) treatments, respectively. Emamectin benzoate 5 SG and Neemix are effective and safe insecticides in controlling diamondback moth in cabbage crops and are viable options for integrated management of P. xylostella. Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_biological_and_chemical_insec [...] [article] Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) [printed text] / B. Sapkota, Author ; Regmi,R., Author ; S. Tiwari, Author ; R.B Thapa, Author . - 2022 . - 95-101 p. Languages : English (eng) in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 95-101 p. Keywords: Bio-pesticides, cabbage, P. xylostella, management, emamectin benzoate, neemix Abstract: Diamondback moth, Plutella xylostella (L.) is the most devastating pest in late winter in cabbage (Brassica oleracea var. capitata L.). Pesticides are the common pest management practices to manage the crucifer pests. These practices are not sustainable and ecofriendly. Hence, a field experiment was conducted to evaluate the efficacy of chemical, botanicals and biological insecticides todevelop safer and more effective insecticides for the diamondback moth, in cabbage during winter season 2018-19. The experiment was laid in a randomized block design (RCBD) with four replication and five treatments viz. i) Emamectin benzoate 5SG @ 0.4 gm/l, ii) Neemix (Azadirachtin 300 ppm) @ 2 ml/l, iii) Metarhizium anisopliae @ 2 ml/l, iv) Beauveri abassiana @ 2 ml/l and v) control (untreated). Standard recommended agronomic practices were followed in field to ensure better crop growth. The maximum reduction of P. xylostella larval population over untreated control was recorded in Emamectin benzoate 5 SG (95%) andNeemix(95%) sprayed field. Bio-pesticides such asM. anisopliae and B. bassiana were effective only after the first spray with maximum efficacy of (76%) and (65%), respectively, and decreased efficacy in the second and third sprays. Both yields with the least number of damaged leaves and maximum net profit was recorded in Emamectin benzoate sprayed plots with a higher benefit-cost ratio of (3.47), which was followed by M. anisopliae(2.96) and Neemix (2.92) treatments, respectively. Emamectin benzoate 5 SG and Neemix are effective and safe insecticides in controlling diamondback moth in cabbage crops and are viable options for integrated management of P. xylostella. Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_biological_and_chemical_insec [...]

Efficacy of commercial insecticide for the management of tomato fruit borer, Helicoverpa armigera hubner, on tomato in Chitwan, Nepal / Regmi,R. in Journal of Agriculture and Forestry University, Volume 2 (2018)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 2 (2018) . - 127-131 p. Title : Efficacy of commercial insecticide for the management of tomato fruit borer, Helicoverpa armigera hubner, on tomato in Chitwan, Nepal Material Type: printed text Authors: Regmi,R., Author ; S. Poudel, Author ; R. C. Regmi, Author Publication Date: 2018 Article on page: 127-131 p. Languages : English (eng) Keywords: Monitoring, tomato fruit borer, bio-pesticide, flubendiamide Abstract: A field experiment was conducted to understand the peak season of tomato fruit borer, and to evaluate the efficacy of commercial available pesticides for management of tomato fruit borer. Tomato fruit borer was monitored using Heli-lure trap. A total of seven treatments; (i. Emamectin benzoate 5SG@ 0.625g/L, ii. Fubendiamide 48SC@ 0.21mL/L; iii. Metarihizium anisopilae@ 3g/L, iv. Bacillus thuringiensis@ 3g/L, v. Chlorpyrifos 50%+Cypermethrin 5%@ 2mL/L, vi. Derrisom@ 3mL/L, and vii. Control) were tested using Randomized Complete Block design (RCBD) with three replication for each treatment. The highest number of tomato fruit borer male moth was trapped during midApril. The results showed that the damage percentage of fruit by tomato fruit borer was recorded the highest with control plot (42.24) which was statistically similar to Bacillus thuriengiensis (39.44), Metarihizium anisopliae (35.32) and Derrisom (31.31) treated plots. Whereas the lowest fruit damage percent was recorded with Flubendiamide (8.41) followed by Chlorpyrifos+Cypermethrin (19.98) and Emamectin benzoate (20.82). Among the treatments, the highest yield was obtained with Flubendiamide (68.68t/ha) followed by Chlorpyrifos+cypermethrin (67.53t/ha), Derisom (64.45t/ ha) and Emamectin benzoate (63.32t/ha). Whereas the lowest yield was obtained with control plot followed by Metarihizium anisopliae (57.24t/ha) and Bacillus thuriengiensis (58.37t/ha) treated plots. The Flubendiamide resulted the lowest fruit damage and highest yield, thus could be the best insecticide to manage tomato fruit bore Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_commercial_insecticide_for_th [...] [article] Efficacy of commercial insecticide for the management of tomato fruit borer, Helicoverpa armigera hubner, on tomato in Chitwan, Nepal [printed text] / Regmi,R., Author ; S. Poudel, Author ; R. C. Regmi, Author . - 2018 . - 127-131 p. Languages : English (eng) in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 127-131 p. Keywords: Monitoring, tomato fruit borer, bio-pesticide, flubendiamide Abstract: A field experiment was conducted to understand the peak season of tomato fruit borer, and to evaluate the efficacy of commercial available pesticides for management of tomato fruit borer. Tomato fruit borer was monitored using Heli-lure trap. A total of seven treatments; (i. Emamectin benzoate 5SG@ 0.625g/L, ii. Fubendiamide 48SC@ 0.21mL/L; iii. Metarihizium anisopilae@ 3g/L, iv. Bacillus thuringiensis@ 3g/L, v. Chlorpyrifos 50%+Cypermethrin 5%@ 2mL/L, vi. Derrisom@ 3mL/L, and vii. Control) were tested using Randomized Complete Block design (RCBD) with three replication for each treatment. The highest number of tomato fruit borer male moth was trapped during midApril. The results showed that the damage percentage of fruit by tomato fruit borer was recorded the highest with control plot (42.24) which was statistically similar to Bacillus thuriengiensis (39.44), Metarihizium anisopliae (35.32) and Derrisom (31.31) treated plots. Whereas the lowest fruit damage percent was recorded with Flubendiamide (8.41) followed by Chlorpyrifos+Cypermethrin (19.98) and Emamectin benzoate (20.82). Among the treatments, the highest yield was obtained with Flubendiamide (68.68t/ha) followed by Chlorpyrifos+cypermethrin (67.53t/ha), Derisom (64.45t/ ha) and Emamectin benzoate (63.32t/ha). Whereas the lowest yield was obtained with control plot followed by Metarihizium anisopliae (57.24t/ha) and Bacillus thuriengiensis (58.37t/ha) treated plots. The Flubendiamide resulted the lowest fruit damage and highest yield, thus could be the best insecticide to manage tomato fruit bore Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_commercial_insecticide_for_th [...]

Growth performance of Bijaya Sal (Pterocarpus marsupium) in the Terai of Nepal / K.P. Acharya in Banko Jankari, Vol.12;no.2 (November 2002)

Public ISBD [article]  inBanko Jankari > Vol.12;no.2 (November 2002) . - 69-71p. Title : Growth performance of Bijaya Sal (Pterocarpus marsupium) in the Terai of Nepal Material Type: printed text Authors: K.P. Acharya, Author ; Regmi,R., Author ; Acharya,B., Author Publication Date: 2002 Article on page: 69-71p. Languages : English (eng) Class number: 634.905 [article] Growth performance of Bijaya Sal (Pterocarpus marsupium) in the Terai of Nepal [printed text] / K.P. Acharya, Author ; Regmi,R., Author ; Acharya,B., Author . - 2002 . - 69-71p. Languages : English (eng) in Banko Jankari > Vol.12;no.2 (November 2002) . - 69-71p. Class number: 634.905

Varietal screening of rice against leaf folder, caseworm and grasshopper damage under field condition in Chitwan / Regmi,R. in Journal of Agriculture and Forestry University, Volume 1 (2017)  

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