Kumar, V.M. and Harisatyanarayana, N. and Kumar, K.M. (2012) Evaluation of promising groundnut genotypes for yield and their reaction to leaf spot diseases in North coastal zone of Andhra Pradesh. International Journal of Plant Protection, 5 (2). pp. 319-323.
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Abstract
Field trials were conducted at Agricultural Research Station, Amadalavalasa for three consecutive Kharif seasons of 2009-2010, 2010-2011 and 2011-2012 to evaluate sixteen promising genotypes (inclusive of Abhaya as check) for yield and their reaction to early and late leaf spots under natural (unprotected) conditions in Randomized Block Design (RBD) with three replications of 20 sq.m. plot. Observations on dry pod yield, shelling per cent and dry haulm yield were recorded after harvesting. Early leaf spot and late leaf spot observations were recorded from natural initiation of disease up to harvest at 20 days interval and genotypes were categorized based on 1-9 scale. Significantly highest average dry pod yield and shelling per cent was recorded in FDR 79 (1860.53 kg/ha and 68.50%) and TCGS 894 (1804.53 kg/ha and 67.56%). Out of 16 genotypes evaluated for their reaction to leaf spot diseases, early leaf spot disease was recorded in the range of 6.83 per cent (FDR-79) during Kharif 2009-2010 up to 51.9 per cent (DRT 43) during Kharif-2010-2011. FDR-79 has resistant reaction to early leaf spot for three consecutive year's with severities of 6.83, 9.48 and 8.95 per cent during 2009-2010, 2010-2011 and 2011-2012, respectively, mean severity was also observed to be lowest (8.42%), hence, the entry has resistant reaction to early leaf spot among the genotypes evaluated under natural field conditions. Late leaf spot was observed in the range of 10.00 per cent (FDR-79) during Khahf-2011-2012 up to 48.00 per cent (TCGS 983) during 2011-2012 and none of the entries was resistant to late leaf spot. FDR 79 and TCGS 894 were found to be superior and suitable genotypes for North coastal zone of Andhra Pradesh
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Groundnut Genotypes, Yield, Early leaf spot, Resistance |
| Author Affiliation: | Department of Plant Pathology, Agricultural College, (A.N.G. R.A.U.), Bapatla (A.P.), India |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Groundnut |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 28 May 2013 05:23 |
| Last Modified: | 28 May 2013 05:23 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10647 |
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