Efficacy of Organic Amendments and a Nematicide for the Management of Root-Knot Nematode (Meloidogyne incognita) of Tomato

Abstract

A field experiment was conducted in the field of Plant Pathology Division, Bangladesh Agricultural Research Institute to find out the efficacy of organic amendments viz. poultry refuse, rice bran , fresh saw dust, dry saw dust, tea waste and a nematicide Furadan 5G against root-knot disease (Meloidogyne incognita) of tomato during three consecutive years viz. 2012-13, 2013-14 and 2014-15. Soil was treated with different organic amendments 10 days before seedling transplanting and Furadan 5G was applied on the day of seedling transplanting of tomato. The soils of the experimental plots were inoculated with chopped severely galled (M. incognita) roots of tomato at the time of treatment application. In all the years, considerable reduction in root-knot disease and increase in plant growth and fruit yield were achieved with different treatments and Furadan 5G. The most effective treatment was poultry refuse followed by rice bran and Furadan 5G. In 1st year, 2nd year and 3rd year, gall index values were 5.16, 4.94 and 6.27 under control, respectively. The severity was reduced to 59.11-64.53% in 1st year, 50.60-60.72% in 2nd year and 48.96-55.34% in the 3rd year compared to control due to application of the rice bran, Furadan 5G and poultry refuse. On the other hand, fruit yield under control was 44.82 t/ha at 1st year 49.73 t/ha in 2nd year and 36.95 t/ha at 3rd year. The highly effective three treatments increased fruit yield to 11.02-29.90% in 1st year, 17.17-30.56% in 2nd year and 23.39-35.02% in the 3rd year compared to control. The fruit yield of tomato was directly and linearly correlated with gall indices in tomato gall. Based on the findings of present the study poultry refuse and rice bran noted as an effective treatment to manage root-knot disease of tomato.