|
[article] | 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 |
in Nepal Agriculture Research Journal > Vol. 9 (2009) . - 77-83 p.
[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 |
|
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