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Influence of environmental factors on production and dispersal of Tolyposporium penicillariae sporidia

OAR@ICRISAT

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Relation http://oar.icrisat.org/1723/
 
Title Influence of environmental factors on production and dispersal of Tolyposporium penicillariae sporidia
 
Creator Kousik, C S
Thakur, R P
Subbarao, K V
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description The influence of environmental factors on production and dispersal of airborne sporidia of Tolyposporium penicillariae, the causal agent of smut of pearl millet (Pennisetum glaucum), was studied for 4 years (1984-1987) at the ICRISAT Centre farm. Sporidia were monitored once every 2 weeks, using rotorod spore samplers in two fields each cropped with pearl millet (June-October) and groundnut (November-April), located 500 m apart; one was a pearl millet smut nursery and the other was not. Most sporidia were trapped during the latter half of the pearl millet growing season, the time when the crop is at flowering and susceptible to infection. Maximum numbers of sporidia were recorded when the maximum temperature was 31-32° C and the minimum temperature was 20-21°C, and maximum relative humidity (RH) was more than 80% and minimum RH was 41-50%, with some rainfall (11-30 mm) and low wind speed (4-6 km/h), calculated on biweekly basis. Temperature, RH and wind speed were the principal environmental factors influencing production and dispersal of T. penicillariae sporidia.
 
Date 1998
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/1723/1/IndJoul_of_Aerobiology_1%282%2985-91_1988.pdf
Kousik, C S and Thakur, R P and Subbarao, K V (1998) Influence of environmental factors on production and dispersal of Tolyposporium penicillariae sporidia. Indian Journal of Aerobiology, 1 (2). pp. 85-91.