7 result(s) search for keyword(s) 'AUDPC,'    

Controlling Foliar Blight of Wheat through Nutrient Management and Varietal Selection / Yuva R. Kandel in Nepal Agriculture Research Journal, Vol. 9 (2009)  

Public ISBD [article]  inNepal Agriculture Research Journal > Vol. 9 (2009) . - 77-83 p. Title : Controlling Foliar Blight of Wheat through Nutrient Management and Varietal Selection Material Type: printed text Authors: Yuva R. Kandel, Author ; Jay P. Mahato, Author Publication Date: 2009 Article on page: 77-83 p. Languages : English (eng) Keywords: AUDPC,  Bipolaris  sorokiniana,  disease  resistance,  grainyield,  Helminthosporium  leaf  blight,  Pyrenophora  tritici-repentis Abstract: Helminthosporium leaf blight, a complex of spot blotch caused by Bipolaris sorokiniana and tan spot caused by Pyrenophora tritici-repentis, is one of the most important foliar diseases of wheat in Nepal. It appears in almost all wheat growing areas and causes severe yield loss every year. A study was conducted at Regional Agriculture Research Station (RARS), Tarahara, Sunsari during 2004-05 and 2005-06 wheat growing seasons to elucidate role of nitrogen in wheat genotypes for management of the disease. Field experiment was laid out on split plot design with three replications. Four doses of nitrogen in six different promising genotypes were tested. Nitrogen levels higher than 50 kg ha-1 significantly reduced disease severity and increased grain yield in all genotypes but there was no significant differences in grain yield in the first year. In the second year, grain yield difference among the genotypes was significant. Area under disease progress curve (AUDPC) was not significant between two doses 100 and 150 kg ha-1. The wheat genotypes showed different reactions to disease. Genotype BL 2047 had the lowest incidence of disease followed by BL 1887, whereas BL 2217 had the highest incidence of the disease. Genotype BL 2196 produced the highest grain yield (2172 kg ha-1) and the lowest grain yield was obtained in Bhrikuti followed by BL 2089. These results suggested that fertilizer should be applied in soil at balanced dose 100:50:50 N:P2O5:K2O kg ha-1. Growing relatively resistant genotypes with the balance dose of fertilizers can reduce foliar blight severity in wheat. Link for e-copy: http://elibrary.narc.gov.np/?r=11 [article] Controlling Foliar Blight of Wheat through Nutrient Management and Varietal Selection [printed text] / Yuva R. Kandel, Author ; Jay P. Mahato, Author . - 2009 . - 77-83 p. Languages : English (eng) in Nepal Agriculture Research Journal > Vol. 9 (2009) . - 77-83 p. Keywords: AUDPC,  Bipolaris  sorokiniana,  disease  resistance,  grainyield,  Helminthosporium  leaf  blight,  Pyrenophora  tritici-repentis Abstract: Helminthosporium leaf blight, a complex of spot blotch caused by Bipolaris sorokiniana and tan spot caused by Pyrenophora tritici-repentis, is one of the most important foliar diseases of wheat in Nepal. It appears in almost all wheat growing areas and causes severe yield loss every year. A study was conducted at Regional Agriculture Research Station (RARS), Tarahara, Sunsari during 2004-05 and 2005-06 wheat growing seasons to elucidate role of nitrogen in wheat genotypes for management of the disease. Field experiment was laid out on split plot design with three replications. Four doses of nitrogen in six different promising genotypes were tested. Nitrogen levels higher than 50 kg ha-1 significantly reduced disease severity and increased grain yield in all genotypes but there was no significant differences in grain yield in the first year. In the second year, grain yield difference among the genotypes was significant. Area under disease progress curve (AUDPC) was not significant between two doses 100 and 150 kg ha-1. The wheat genotypes showed different reactions to disease. Genotype BL 2047 had the lowest incidence of disease followed by BL 1887, whereas BL 2217 had the highest incidence of the disease. Genotype BL 2196 produced the highest grain yield (2172 kg ha-1) and the lowest grain yield was obtained in Bhrikuti followed by BL 2089. These results suggested that fertilizer should be applied in soil at balanced dose 100:50:50 N:P2O5:K2O kg ha-1. Growing relatively resistant genotypes with the balance dose of fertilizers can reduce foliar blight severity in wheat. Link for e-copy: http://elibrary.narc.gov.np/?r=11

Influence of Long-term Use of Organic and Inorganic Nutrients on HLB Disease of Wheat under Rice-Wheat Cropping Pattern / Deepak Bhandari in Nepal Agriculture Research Journal, Vol. 9 (2009)  

Public ISBD [article]  inNepal Agriculture Research Journal > Vol. 9 (2009) . - 69-76 p Title : Influence of Long-term Use of Organic and Inorganic Nutrients on HLB Disease of Wheat under Rice-Wheat Cropping Pattern Material Type: printed text Authors: Deepak Bhandari, Author ; Regmi, A.P., Author Publication Date: 2009 Article on page: 69-76 p Languages : English (eng) Keywords: AUDPC,  FYM,  Helminthosporium  leaf  blight,  potassium Abstract: Helminthosporium leaf blight (HLB) is one of the most destructive diseases of wheat in terai (plain) region of Nepal. This study was conducted to determine the effect of long-term application of various levels of nitrogen (N), phosphorus (P), potassium (K) and organic nutrients on HLB disease of wheat. The experiment was superimposed on long-term fertility experiment conducted in RCB design with three replications under rice-wheat cropping pattern at National wheat research program (NWRP), Bhairahawa, Nepal. The treatments include various combinations of nitrogen 100 kg ha-1, phosphorus 0 and 60 kg ha-1, and potash 0, 50 and 100 kg ha-1 with or without Sesbania (Sesbania cannabina) and farm yard manure (FYM). Area under disease progress curve (AUDPC) was calculated using the disease scores and yield parameters were recorded. Among the inorganic nutrients, long-term deficiency of potash in the field markedly enhances the HLB disease. Application of phosphorus in various doses increased the HLB severity in absence of potash. Regular application of at least potash 50 kg ha- 1 in wheat noticeably reduced the HLB disease. Regular use of FYM 10 ton ha-1 for long-term considerably reduced the HLB disease but long-term use of Sesbania as green manure did not show any impact on HLB severity. Inclusion of potash in nutrients considerably increased the yield and thousand grain weight (TGW) of wheat. In long term, balanced use of inorganic and organic nutrients with special attention on regular inclusion of potash and FYM in the nutrient combinations is vital in suppression of HLB disease under rice-wheat cropping pattern. Link for e-copy: http://elibrary.narc.gov.np/?r=10 [article] Influence of Long-term Use of Organic and Inorganic Nutrients on HLB Disease of Wheat under Rice-Wheat Cropping Pattern [printed text] / Deepak Bhandari, Author ; Regmi, A.P., Author . - 2009 . - 69-76 p. Languages : English (eng) in Nepal Agriculture Research Journal > Vol. 9 (2009) . - 69-76 p Keywords: AUDPC,  FYM,  Helminthosporium  leaf  blight,  potassium Abstract: Helminthosporium leaf blight (HLB) is one of the most destructive diseases of wheat in terai (plain) region of Nepal. This study was conducted to determine the effect of long-term application of various levels of nitrogen (N), phosphorus (P), potassium (K) and organic nutrients on HLB disease of wheat. The experiment was superimposed on long-term fertility experiment conducted in RCB design with three replications under rice-wheat cropping pattern at National wheat research program (NWRP), Bhairahawa, Nepal. The treatments include various combinations of nitrogen 100 kg ha-1, phosphorus 0 and 60 kg ha-1, and potash 0, 50 and 100 kg ha-1 with or without Sesbania (Sesbania cannabina) and farm yard manure (FYM). Area under disease progress curve (AUDPC) was calculated using the disease scores and yield parameters were recorded. Among the inorganic nutrients, long-term deficiency of potash in the field markedly enhances the HLB disease. Application of phosphorus in various doses increased the HLB severity in absence of potash. Regular application of at least potash 50 kg ha- 1 in wheat noticeably reduced the HLB disease. Regular use of FYM 10 ton ha-1 for long-term considerably reduced the HLB disease but long-term use of Sesbania as green manure did not show any impact on HLB severity. Inclusion of potash in nutrients considerably increased the yield and thousand grain weight (TGW) of wheat. In long term, balanced use of inorganic and organic nutrients with special attention on regular inclusion of potash and FYM in the nutrient combinations is vital in suppression of HLB disease under rice-wheat cropping pattern. Link for e-copy: http://elibrary.narc.gov.np/?r=10

Management of Leaf Blight (Bipolaris sorokiniana) Disease of Wheat with Cultural Practices / Prem C.P. Chaurasia in Nepal Agriculture Research Journal, Vol. 7 (2006)  

Public ISBD [article]  inNepal Agriculture Research Journal > Vol. 7 (2006) . - 63-69 p Title : Management of Leaf Blight (Bipolaris sorokiniana) Disease of Wheat with Cultural Practices Material Type: printed text Authors: Prem C.P. Chaurasia, Author ; Duveiller, E., Author Publication Date: 2006 Article on page: 63-69 p Languages : English (eng) Keywords: AUDPC,  culture  practices,  disease  management,  leaf  blight Abstract: An experiment was conducted at agronomy farm of Agriculture research Station, Tarahara, Nepal for three consecutive years viz 2000/2001,2001/2002, and 2002/2003 to evaluate the effects of different cultural practices on leaf blight diseases of wheat caused by Bipolaris sorokiniana under terai conditions. The experiment was conducted in factorial Randomized Complete Block Design with four replications. Four factors, two wheat verities RR-21 and Nepal 297,two number of irrigations (two and three irrigations), two doses of Nitrogen fertilizer viz. 60kg N/ha and 120 kg N/ha and two dates of sowing of wheat were examined. Different yield components, grain yield (kg/plot) and disease severity were recorded to judge the effects of these factors on severity of leaf blight of wheat. Nepal Line 297 had significantly less AUDPC based on flag leaf infection and whole plan as compared to RR-21. Number of irrigations had no significant effect on AUDPC, as there was frequent rain during experimental period. Doses of Nitrogen fertilizer had significant effect on AUDPC based on flag leaf infection. It was higher in case of 60 kg N/ha. The third week of November sowing of wheat had lower value of AUDPC as compared to December sowing. Plant height, panicle lengths were highly significantly higher in case of RR-21 as compared to Nepal-297. Thousand kernel weight, and grain yield kg/ha were significantly higher in Nepal-297. All agronomic parameters except thousand kernel weight and number of tillers/plan were significantly higher in 120kg N/ha. The third week of November sowing of wheat had less plant height and panicle length, higher thousand kernel weight and more grain yield. Leaf blight severity was highly significantly less in case of Nepal-297. Doses of Nitrogen fertilizer had significant effect on plant height, panicle length, thousand kernel weight, percentage flag leaf infection and AUDPC based on flag leaf infection. Based on the results of three years of experimentations, it can be concluded that Nepal-297 had less disease, number of irrigations had no effect on disease severity, higher doses of nitrogen fertilizer had less flag infection and late sowing of wheat also had less disease. Numbers of irrigation’s effects were inconclusive as there were frequent rains during experimentation period. Based on above conclusion, it is recommended that growing wheat verity like Nepal-297, use of higher doses of nitrogen fertilizer and sowing of wheat / first week of Dec help in minimizing the severity of leaf blight. However late sowing had lowered grain yield. Link for e-copy: http://elibrary.narc.gov.np/?r=48 [article] Management of Leaf Blight (Bipolaris sorokiniana) Disease of Wheat with Cultural Practices [printed text] / Prem C.P. Chaurasia, Author ; Duveiller, E., Author . - 2006 . - 63-69 p. Languages : English (eng) in Nepal Agriculture Research Journal > Vol. 7 (2006) . - 63-69 p Keywords: AUDPC,  culture  practices,  disease  management,  leaf  blight Abstract: An experiment was conducted at agronomy farm of Agriculture research Station, Tarahara, Nepal for three consecutive years viz 2000/2001,2001/2002, and 2002/2003 to evaluate the effects of different cultural practices on leaf blight diseases of wheat caused by Bipolaris sorokiniana under terai conditions. The experiment was conducted in factorial Randomized Complete Block Design with four replications. Four factors, two wheat verities RR-21 and Nepal 297,two number of irrigations (two and three irrigations), two doses of Nitrogen fertilizer viz. 60kg N/ha and 120 kg N/ha and two dates of sowing of wheat were examined. Different yield components, grain yield (kg/plot) and disease severity were recorded to judge the effects of these factors on severity of leaf blight of wheat. Nepal Line 297 had significantly less AUDPC based on flag leaf infection and whole plan as compared to RR-21. Number of irrigations had no significant effect on AUDPC, as there was frequent rain during experimental period. Doses of Nitrogen fertilizer had significant effect on AUDPC based on flag leaf infection. It was higher in case of 60 kg N/ha. The third week of November sowing of wheat had lower value of AUDPC as compared to December sowing. Plant height, panicle lengths were highly significantly higher in case of RR-21 as compared to Nepal-297. Thousand kernel weight, and grain yield kg/ha were significantly higher in Nepal-297. All agronomic parameters except thousand kernel weight and number of tillers/plan were significantly higher in 120kg N/ha. The third week of November sowing of wheat had less plant height and panicle length, higher thousand kernel weight and more grain yield. Leaf blight severity was highly significantly less in case of Nepal-297. Doses of Nitrogen fertilizer had significant effect on plant height, panicle length, thousand kernel weight, percentage flag leaf infection and AUDPC based on flag leaf infection. Based on the results of three years of experimentations, it can be concluded that Nepal-297 had less disease, number of irrigations had no effect on disease severity, higher doses of nitrogen fertilizer had less flag infection and late sowing of wheat also had less disease. Numbers of irrigation’s effects were inconclusive as there were frequent rains during experimentation period. Based on above conclusion, it is recommended that growing wheat verity like Nepal-297, use of higher doses of nitrogen fertilizer and sowing of wheat / first week of Dec help in minimizing the severity of leaf blight. However late sowing had lowered grain yield. Link for e-copy: http://elibrary.narc.gov.np/?r=48

Effect of phosphorus and potash on intensity of spot blotch disease of wheat / Bhandari, D.    

Public ISBD in Proceedings of the 28th National Winter Crops Workshops held at Lumle, 9-10 March 2011 / Giri, Y.P.     Title : Effect of phosphorus and potash on intensity of spot blotch disease of wheat Material Type: printed text Authors: Bhandari, D., Author Pagination: 331-336 p. Languages : English (eng) Keywords: AUDPC,  Interaction,  Phosphorus,  Potash,  Spot  blotch,  Wheat Abstract: Spot blotch disease caused by Bipolaris sorokiniana (Sacc.) shoem. is the most serious diseases of wheat ( Triticum aestivum L.) in plain areas of Nepal. Nutrient management palpably influences the intensity of the disease. The experiment was conducted to evaluate the effects of various levels of phosphorus and potash, and their interactions on intensity of spot blotch disease of wheat. The experiment was carried out at National Wheat Research Program , Bhairahawa, Nepal in split-split plot design with three replications for two consecutive years................... Link for e-copy: http://elibrary.narc.gov.np/?r=1864 in Proceedings of the 28th National Winter Crops Workshops held at Lumle, 9-10 March 2011 / Giri, Y.P.     Effect of phosphorus and potash on intensity of spot blotch disease of wheat [printed text] / Bhandari, D., Author . - [s.d.] . - 331-336 p. Languages : English (eng) Keywords: AUDPC,  Interaction,  Phosphorus,  Potash,  Spot  blotch,  Wheat Abstract: Spot blotch disease caused by Bipolaris sorokiniana (Sacc.) shoem. is the most serious diseases of wheat ( Triticum aestivum L.) in plain areas of Nepal. Nutrient management palpably influences the intensity of the disease. The experiment was conducted to evaluate the effects of various levels of phosphorus and potash, and their interactions on intensity of spot blotch disease of wheat. The experiment was carried out at National Wheat Research Program , Bhairahawa, Nepal in split-split plot design with three replications for two consecutive years................... Link for e-copy: http://elibrary.narc.gov.np/?r=1864

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Identification of best spray schedules for propiconazole fungicide against spot blotch disease in wheat / Bhandari, D.    

Public ISBD in Proceedings of the 28th National Winter Crops Workshops held at Lumle, 9-10 March 2011 / Giri, Y.P.     Title : Identification of best spray schedules for propiconazole fungicide against spot blotch disease in wheat Material Type: printed text Authors: Bhandari, D., Author Pagination: 314-319 p. Languages : English (eng) Keywords: AUDPC,  Cost  Effectiveness,  Propiconazole,  Spot  Blotch,  Spray,  Wheat Abstract: Spot blotch disease caused by Bipolaris sorokiniana (Sacc.) shoem. is one of the most destructive diseases of wheat ( Triticum aestivum L.) in plain areas of Nepal. Triazoles fungicides are expensive but effective against the disease. The experiment was conducted to identify the most efficient spray schedules of Tilt (Propiconazole 25 ec) fungicide against spot blotch disease in wheat. The experiment was carried out at National Wheat Research Program, Bhairahawa, Nepal in Randomized Complete Block Design with three replications and 12 treatments.............. Link for e-copy: http://elibrary.narc.gov.np/?r=1862 in Proceedings of the 28th National Winter Crops Workshops held at Lumle, 9-10 March 2011 / Giri, Y.P.     Identification of best spray schedules for propiconazole fungicide against spot blotch disease in wheat [printed text] / Bhandari, D., Author . - [s.d.] . - 314-319 p. Languages : English (eng) Keywords: AUDPC,  Cost  Effectiveness,  Propiconazole,  Spot  Blotch,  Spray,  Wheat Abstract: Spot blotch disease caused by Bipolaris sorokiniana (Sacc.) shoem. is one of the most destructive diseases of wheat ( Triticum aestivum L.) in plain areas of Nepal. Triazoles fungicides are expensive but effective against the disease. The experiment was conducted to identify the most efficient spray schedules of Tilt (Propiconazole 25 ec) fungicide against spot blotch disease in wheat. The experiment was carried out at National Wheat Research Program, Bhairahawa, Nepal in Randomized Complete Block Design with three replications and 12 treatments.............. Link for e-copy: http://elibrary.narc.gov.np/?r=1862

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http://nkcs.org.np/narc/dl/?r=1862 URL

Identifying sources of resistance to major diseases of lentil / D.B. Gharti    

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Morpho-physiology of wheat genotypes under different sowing dates as affected by Helminthosporium leaf blight and leaf rust in Chiwan, Nepal / Neupane, S.P. in Agronomy Journal of Nepal, Vol.3 (2013)  

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