Indian Journal of Nematology
Year : 1981, Volume : 11, Issue : 1
First page : ( 95) Last page : ( 95)
Print ISSN : 0303-6960.

Crop loss assessment in brinjal due to root-knot nematode Meloidogyne incognita

Krishnappa K., Setty K. G. H., Prasad K. S. Krishna

Department of Plant Pathology, University of Agril. Sciences, Hebbal, Bangalore-560024.

Presented at Nematology Symposium held at Coimbatore, India in February, 1981

Abstract

A field experiment was condueted to assess the crop loss due to root-knot nematode, Meloidogyne incognita in brinjal at the main Research Station, Hebbal, Bangalore. Randomized complete block strip trial was adopted with paired treatments in a nematode sick plot. Plants were protected with aldicrab (Temik 10G) at the rate of 8 kg a.i./ha applied a day prior to transplanting in five replications. Another set of unprotected plants served as check. Significant differences in plant growth and vigour were observed in shoot height, fresh weights of shoot and root and length of roots between protected and unprotected plants. The root-knot index in the scale of 1–5 was 0.7 in protected plots compared to 4.71 in unprotected plots. There was a significant increase in fruit yield per plant in protected plots. The per hectare fruit yield was 20,500 kgs in treated plots as against 11,300 kgs in unprotected check plots. Thus, 44.87 per cent yield loss could be accounted to be due to root-knot nematode alone in a heavily infested field.

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