Abstract
Root-rot root-knot complex disease is aggressively infecting the vegetable crops all over the world. During our survey, conducted during September 2013 to October 2014, it was observed that this disease in the vegetable crops of different regions of Karachi including Malir, Landhi, Murad Memon Goth, Gadap Town and Sharafi Goth causes heavy losses. During present study, twelve different genera of fungi were isolated from different vegetable crops (cabbage, brinjal, tomato, radish and spinach). The fungi included Alternaria solani, Aspergillus flavus, A. fumigatus, A. niger, A. oryzae, A. terreus, Acremonium fusidioides, Cladosporium sp., Drechslera hawaiiensis, Eurotium amstelodami, Fusarium oxysporum, Macrophomina phaseolina, Penicillium commune, Rhizoctonia solani, Trichoderma harzianum and Ulocladium sp. Besides these fungi, root-knot nematodes (Meloidogyne spp.) were also isolated from the infected roots of vegetable crops. It was also observed in the present study that the infection rapidly increased due to many factors such as, the presence of excess moisture, winds, dust storms and as well as by mechanical vectors. The extracts of different parts of three medicinal plants Annona squamosa, Ocimum basilicum and Cassia fistula were used for the control of root-rot root-knot disease complex. Aqueous extract of A. squamosa not only proved to be most effective in the control of soil-borne plant pathogenic fungi and root-knot nematodes but also promoted the plant growth.

Farzana, Muhammad Abid, Faisal Hussain. (2016) ROOT-ROT ROOT-KNOT DISEASE COMPLEX OF VEGETABLES IN KARACHI REGION AND THEIR NON-CHEMICAL CONTROL, , Volume 13, Issue 1.
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