IMPACT OF BIO AND ORGANIC SOIL AMENDMENTS ON SUNFLOWER DAMPING-OFF AND ROOT-ROT DISEASES UNDER RECLAIMED SOIL

Document Type : Original Article

Author

pant protection, division of environment and arid lands,DRC,Cairo,Egypt.

Abstract

Field experiment was carried out at El-Nubaria Province, El-Behaira Governorate to investigate the effect of some organic and biofertilization treatments as soil amendments on suppression Macrophomina phasolina, Sclerotium rolfisii,and Rhizoctonia solani, the causal pathogens of root-rot and damping-off of sunflower (Helianthus annuusL.). Organic amendment treatments increased the sunflower resistanceto soil borne diseases hence enhanced its productivity. The most promising results obtained from rice straw+EM1+Urea, biochar+compost, rice straw+EM1 and EM-Bokashi with no significant differences, compost and animal manure, respectively compared to the control treatment (without organic amendment). EM-X (EM1+Bacillus subtilis+mycorrhiza+Azotobacter sp.) was found to be more effective in reducing M. phaseolina, S. rolfisii, andR. solanipopulation and root-rot incidence, therefore enhance sunflower productivity compared to the other examined biofertilization treatments including the conventional chemical fertilization as the control treatment. The integration between rice straw+EM1+Urea or biochar+compost and EM-X was found to be the furthermost advised agricultural practices for soil borne diseases management as land degradation neutrality (LDN) technology that enhances land cover and area unit productivity under these conditions.

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Egyptian Journal of Desert Research
Volume 68, Issue 2
December 2018
Pages 277-298

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History

  • Receive Date: 01 April 2019
  • Accept Date: 12 August 2019

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