Yield loss due to leaf spot and pod blight disease complex in rainfed blackgram (Phaseolus mungo) dominated by Cercospora cruenta relative to meteorological parameters
Indian Agricultural Research Journals
View Archive InfoField | Value | |
Title |
Yield loss due to leaf spot and pod blight disease complex in rainfed blackgram (Phaseolus mungo) dominated by Cercospora cruenta relative to meteorological parameters
|
|
Creator |
BHARDWAJ, C L
THAKUR, D R |
|
Subject |
leaf spot, pod blight disease, Cercospora cruenta, blackgram, Phasealus mungo
|
|
Description |
A field experiment conducted during 5 wet season during 1993-97 over 6 environments each year to investigate theyield loss relationship of leaf spol and pod blight disease complex with mean weekly weather parameter at pre-flowering and past-flowering revealed that leaf spot and pod blight disease complex dominated by Cercospora cruenla Sacco The 1 July sown gave highest grain yield of'PDU I' blackgram both in protected (624 kg/ha) and unprotected (393 kg/hal plots. The interaction effect of sowing dates and plant protection was not significant. The relationship of this interaction at preflowering with maximum temperature (30.25°C) was negative and significant (-0.982*) indicating that rise in temperature would result in decrease in yield. Contrarily, maximum relative humidity of 90.70% (+0.931 **)and rain frequency of 2.95 days/week (+0.786**) had significant positive correlation. Interestingly, all the parameters were significantly and negatively correlated at post-flowering crop period indicating that a small degree of rise or fall in these parameters would significantly reduce the yield both under protected and unprotected disease management. Reduced rainfall and its frequency at post-flowering seemed to contribute to low yield of black gram with delayed Sowing.
|
|
Publisher |
The Indian Journal of Agricultural Sciences
|
|
Contributor |
—
|
|
Date |
2013-03-11
|
|
Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
|
Format |
application/pdf
|
|
Identifier |
http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/28172
|
|
Source |
The Indian Journal of Agricultural Sciences; Vol 70, No 3 (2000)
0019-5022 |
|
Language |
eng
|
|
Relation |
http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/28172/12802
|
|
Rights |
Copyright (c) 2014 The Indian Journal of Agricultural Sciences
|
|