ISHS Acta Horticulturae 696: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics - Part Two
EFFECT OF OIL CAKES ON SOIL BORNE DISEASE MANAGEMENT AND SOIL MICROFLORA IN APPLE |
| Authors: | A. Sharma, S.K. Sharma |
| Keywords: | apple, collar rot, oil cakes, seedling blight, white root rot |
| Abstract:
Soil borne diseases are difficult to control as the fungicides applied to soil are vulnerable to physical, chemical and biological interactions in the rhizosphere that render them ineffective. The decomposition of organic matter helps in alteration of biotic conditions of soil and reduction in inoculum potential of the pathogens. In the present investigations effect of organic amendments was studied on the management of soil borne diseases prevailing in apple nurseries. Symptom appearance was delayed by oil cakes. Disease incidence in case of neem cake was minimum (60.88%) followed by mustard cake (70.07%) giving 31.65 and 21.33 per cent disease control under pot culture conditions. Under natural epiphytotic conditions the incidence of soil borne diseases was 20.90 per cent and was reduced to 4.59 per cent when the nursery soil was amended with neem cake. Total microbial population (fungal, bacterial and actinomycetes) increased as a result of amendment of soil with oil cakes compared to untreated control. | |
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