Balasubramanian, K.A. (1974) Role of date of seeding, soil moisture, temperature and pH in the incidence of downy mildew of sorghum. Plant and Soil, 41 (2). pp. 233-241.
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Abstract
In trials with sorghum cv. DMS 652 and CSH-1 sown in 6.8 X 5.8 m plots between late June and early Aug., the incidence of Sclerospora sorghi was lowest for sowings in late June. Grain yields of the 2 cultivars respectively were 5.75 and 6.82 kg/plot for early sowing and rapidly declined to 55 and 498 g/plot for the latest sowings. Fodder yields declined with delay in sowing from 46.9 and 37.3 kg/plot to 6.2 and 10.0 kg/plot. CSH-1 was more resistant to the disease than DMS 652 in terms of grain yield but not fodder yield.ADDITIONAL ABSTRACT:The last week of June proved to be the best time for seeding to avoid incidence of Sclerospora sorghi. Reduction in grain and fodder yield is directly proportional to severity of the disease. The disease was considerably suppressed by an available soil moisture of 76-79% but favoured by one of 44-47% for 16 days after seeding. Soil temp. of 26.6 deg C during this period appears to be the opt. for disease expression. The soil pH is not altered by disease incidence or crop growth
| Item Type: | Article |
|---|---|
| Author Affiliation: | University of Agricultural Sciences, Dharwar-5, Mysore (Karnataka), India |
| Subjects: | Plant Production Plant Protection |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 12 Sep 2012 08:18 |
| Last Modified: | 12 Sep 2012 08:19 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/7852 |
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