ISHS Acta Horticulturae 696: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics - Part Two
EFFECT OF SOIL SOLARIZATION ON SOIL MICROFLORA AND SURVIVAL OF DEMATOPHORA NECATRIX IN TEMPERATE FRUIT NURSERIES |
| Authors: | S.K. Sharma, D.K. Kishore, K.K. Pramanick |
| Keywords: | SOIL SOLARIZATION, ROOT ROT, DEMATOPHORA NECATRIX, SOIL, MICROFLORA |
| Abstract:
Soil solarization was carried out from April to June 2002, for 2, 4, 6, 8, 10 and 12 weeks period using 25 µ thickness polythene sheets. The soil temperature under tarped soil ranged 19-50.2, 18-47.2, 17-37.2 °C at 5, 10 and 15 cm depths, which was 10.2, 10 and 7.2°C higher than untarped soil, respectively. Maximum increase in soil temperature was recorded during May followed by June whereas it was minimum during April. Soil solarization for 12 weeks resulted in maximum reduction in the population of fungi, bacteria and actinomycetes, at 5, 10 and 15cm depths with 19.56, 35.00 and 40.00 per cent survival of Dematophora necatrix propagules at these depths, respectively. Hence, soil solarization carried out for longer durations can be utilized for soil borne disease management in temperate regions. | |
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